- dovecot - dovecot.org

[Dovecot] More fine-grained connection limitations?
by Micah Anderson 07 Sep '13

07 Sep '13

There is the mail_max_userip_connections setting, which helps for dealing with number of connections at any given time, but I'm looking for something that will help deal with users who configure their mail clients to connect too frequently. For example, I've seen users who configured their clients to check (IMAP) mail every 3 seconds. This is far too frequent and puts unnecessary load on the server. Even once per minute seems excessive to me. It would be really great if there were a way to tarpit those users to slow them down, or send them an imap message saying they are connecting to often and connections have been disabled for the next 5 minutes or something. Micah ps - what happens to a user when they hit mail_mx_userip_connections? Further connections are just denied, or dropped?

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[Dovecot] Plus addressing
by LuKreme 07 Sep '13

07 Sep '13

It appease that I can enable +address filtering into separate mailboxes by simply setting $recipient_delimiter = '+'; However, is there anyway to get great control over that? For example, on one account I have a lot of +addresses I use. A few, I sort into mailboxes (like my bank, credit cards, etc). The rest are either on the “spammer => /dev/null” list or get sorted into a mailbox named “Misc” (like various newsletters and offers and sales from companies I do business with). -- Sigs are b0rk3d.

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[Dovecot] Dovecot 2.1.7 not starting properly, mail not delivered
by Aldo & Caroline 07 Sep '13

07 Sep '13

On my debian box dovecot does not start properly any more, and mails don't get delivered or sent. I've googled around without finding any useful leads. Hopefully someone is willing to educate me. My guess is it must be a config problem after an upgrade, since I didn't change anything myself directly. Not sure when it started, since I this mail server is not our default machine (yet). Symptoms Upon /etc/init.d/dovecot restart my command line says [ ok ] Restarting IMAP/POP3 mail server: dovecot. But I find in /var/log/mail.log: Sep 6 11:17:36 debian2 dovecot: master: Warning: Killed with signal 15 (by pid=19112 uid=0 code=kill) Sep 6 11:17:36 debian2 dovecot: master: Dovecot v2.1.7 starting up (core dumps disabled) Sep 6 11:17:37 debian2 postfix/cleanup[18466]: warning: connect to TCP map 127.0.0.1:10001: Connection refused Sep 6 11:17:38 debian2 postfix/cleanup[18466]: warning: connect to TCP map 127.0.0.1:10001: Connection refused Sep 6 11:17:39 debian2 postfix/cleanup[18466]: warning: connect to TCP map 127.0.0.1:10001: Connection refused Sep 6 11:17:40 debian2 postfix/cleanup[18466]: warning: connect to TCP map 127.0.0.1:10001: Connection refused Sep 6 11:17:41 debian2 postfix/cleanup[18466]: warning: connect to TCP map 127.0.0.1:10001: Connection refused Sep 6 11:17:42 debian2 postfix/cleanup[18466]: warning: connect to TCP map 127.0.0.1:10001: Connection refused Sep 6 11:17:43 debian2 postfix/cleanup[18466]: warning: connect to TCP map 127.0.0.1:10001: Connection refused Sep 6 11:17:44 debian2 postfix/cleanup[18466]: warning: connect to TCP map 127.0.0.1:10001: Connection refused Sep 6 11:17:45 debian2 postfix/cleanup[18466]: warning: connect to TCP map 127.0.0.1:10001: Connection refused Sep 6 11:17:45 debian2 postfix/cleanup[18466]: warning: tcp:127.0.0.1:10001 lookup error for "aldo(a)alcatoka.nl" Sep 6 11:17:45 debian2 postfix/cleanup[18466]: warning: 57B7D3640073: sender_canonical_maps map lookup problem for aldo(a)alcatoka.nl Sep 6 11:17:45 debian2 postfix/pickup[17004]: warning: maildrop/4EA313640071: error writing 57B7D3640073: queue file write error I do NOT see a line like ... dovecot: auth-worker(default): pgsql: Connected to 127.0.0.1 (mailserver) as mentioned in this <https://workaround.org/ispmail/squeeze/setting-up-dovecot?page=1> tutorial, which I used to set up the previous Dovecot version (which worked OK). When starting Dovecot from the command line with dovecot -F -c /etc/dovecot/dovecot.conf nothing is printed (as if the process is waiting for more input), while it should at least produce some output, right? I'm running Debian 7.1 with an ext3 filesystem together with Postfix 2.9.6 on an x86 machine. CPU info: processor : 0 vendor_id : AuthenticAMD cpu family : 16 model : 6 model name : AMD Sempron(tm) 140 Processor cpu MHz : 800.000 cache size : 1024 KB As far as I can tell, Postfix is running OK. /etc/dovecot/dovecot.conf says: # 2.1.7: /etc/dovecot/dovecot.conf # OS: Linux 3.2.0-4-686-pae i686 Debian 7.1 ext3 auth_mechanisms = plain login disable_plaintext_auth = no log_timestamp = "%Y-%m-%d %H:%M:%S " mail_location = maildir:/var/vmail/%d/%n/Maildir mail_privileged_group = mail passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } protocols = imap pop3 service auth { unix_listener auth-master { group = vmail mode = 0600 user = vmail } user = root } ssl_cert = </etc/dovecot/dovecot.pem ssl_key = </etc/dovecot/private/dovecot.pem userdb { args = uid=3000 gid=3000 home=/var/vmail/%d/%n allow_all_users=yes driver = static } protocol pop3 { pop3_uidl_format = %08Xu%08Xv } protocol lda { auth_socket_path = /var/run/dovecot/auth-master log_path = mail_plugins = sieve postmaster_address = aldo(a)alcatoka.nl As far as I understand, there must be a process (dovecot-auth?) that takes care of translating mail adresses, taking a string at port 10001 and returning the translated string on 10002. This process does not seem to kick off when dovecot restarts. Please tell me if I'm thinking in the right direction, and - more importantly - what I need to do to get dovecot running. I will be happy to provide more test results if that helps, just tell me what you need. Regards, Aldo Verlinde

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[Dovecot] which clients support SCRAM-SHA-1
by Reindl Harald 07 Sep '13

07 Sep '13

Hi running dovecot as IMAP/POP3-proxy with auth_mechanisms = CRAM-MD5 DIGEST-MD5 SCRAM-SHA-1 APOP LOGIN PLAIN which client supports currently "SCRAM-SHA-1" to test it?

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Re: [Dovecot] doveadm expunge problems
by Joseph Tam 07 Sep '13

07 Sep '13

nicolasfo wrote: > doveadm search -u *(a)mydomain.fr MAILBOX Junk savedbefore 1d : don't lists > anything.. > > What am I missed ? > > Is this the good way to change file date (touch) and by this way, have > results to savedbefore command ? No. The date.saved value is (I think) stored in its indices, and is updated via IMAP operations. This value is not derived from file timestamps. You can use doveadm fetch to get the values that dovecot uses dovecot -ftab fetch -A 'mailbox date.saved' mailbox Junk If you actually use IMAP operations to move messages from INBOX to Junk, I think you'll find that date.saved reflects the correct value. Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] userdb with LDAP
by Tobi 06 Sep '13

06 Sep '13

Hi list I currently having troubles to "connect" dovecot (for proxy) to an existing LDAP. If I got the dovecot wiki right only userdb is needed for a proxy setup where the proxy does not authenticate but just forward to the backend for authentication. So I setup the following in dovecot-ldap.conf.ext user_attrs = =password,=y=nopasswd,=y=proxy,mailHost=host user_filter = (&(objectClass=posixAccount)(uid=%u)) There is a field mailHost in LDAP which defines the correct backend for the user and defined userdb in auth-ldap.conf.ext userdb { driver = ldap args = /etc/dovecot/dovecot-ldap.conf.ext } the same config again in auth-system.conf.ext The problem is that dovecot always reports back that the user is unknown. I turned on ldap debug and got the following Sep 6 13:06:10 kolab-frontend dovecot: auth: Debug: ldap(tobi.szyndler(a)datapark.li,213.196.149.1,<88FSBrXlSQDVxJUB>): pass search: base=dc=datapark,dc=li scope=subtree filter=(&(objectClass=posixAccount)(uid=tobi.szyndler(a)datapark.li)) fields=mailHost Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_search Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter: "(&(objectClass=posixAccount)(uid=tobi.szyndler(a)datapark.li))" Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter: AND Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter_list "(objectClass=posixAccount)(uid=tobi.szyndler(a)datapark.li)" Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter: "(objectClass=posixAccount)" Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter: simple Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_simple_filter: "objectClass=posixAccount" Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter: "(uid=tobi.szyndler(a)datapark.li)" Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter: simple Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_simple_filter: "uid=tobi.szyndler(a)datapark.li" Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_build_search_req ATTRS: mailHost Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_send_initial_request Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_send_server_request Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_result ld 0x7fbc43fb4110 msgid -1 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: wait4msg ld 0x7fbc43fb4110 msgid -1 (timeout 0 usec) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: wait4msg continue ld 0x7fbc43fb4110 msgid -1 all 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ** ld 0x7fbc43fb4110 Connections: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: * host: 213.196.149.116 port: 389 (default) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: refcnt: 2 status: Connected Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: last used: Fri Sep 6 13:06:10 2013 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ** ld 0x7fbc43fb4110 Outstanding Requests: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: * msgid 4, origid 4, status InProgress Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: outstanding referrals 0, parent count 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ld 0x7fbc43fb4110 request count 1 (abandoned 0) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ** ld 0x7fbc43fb4110 Response Queue: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: Empty Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ld 0x7fbc43fb4110 response count 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_chkResponseList ld 0x7fbc43fb4110 msgid -1 all 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_chkResponseList returns ld 0x7fbc43fb4110 NULL Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_int_select Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: read1msg: ld 0x7fbc43fb4110 msgid -1 all 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: read1msg: ld 0x7fbc43fb4110 msgid 4 message type search-result Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: read1msg: ld 0x7fbc43fb4110 0 new referrals Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: read1msg: mark request completed, ld 0x7fbc43fb4110 msgid 4 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: request done: ld 0x7fbc43fb4110 msgid 4 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: res_errno: 0, res_error: <>, res_matched: <> Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_free_request (origid 4, msgid 4) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_parse_result Sep 6 13:06:10 kolab-frontend dovecot: auth: ldap(tobi.szyndler(a)datapark.li,213.196.149.1,<88FSBrXlSQDVxJUB>): unknown user Sep 6 13:06:10 kolab-frontend dovecot: auth: Debug: ldap(tobi.szyndler(a)datapark.li,213.196.149.1,<88FSBrXlSQDVxJUB>): pass search: base=dc=datapark,dc=li scope=subtree filter=(&(objectClass=posixAccount)(uid=tobi.szyndler(a)datapark.li)) fields=mailHost Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_search Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter: "(&(objectClass=posixAccount)(uid=tobi.szyndler(a)datapark.li))" Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter: AND Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter_list "(objectClass=posixAccount)(uid=tobi.szyndler(a)datapark.li)" Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter: "(objectClass=posixAccount)" Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter: simple Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_simple_filter: "objectClass=posixAccount" Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter: "(uid=tobi.szyndler(a)datapark.li)" Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_filter: simple Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: put_simple_filter: "uid=tobi.szyndler(a)datapark.li" Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_build_search_req ATTRS: mailHost Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_send_initial_request Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_send_server_request Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_msgfree Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_result ld 0x7fbc43fb4110 msgid -1 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: wait4msg ld 0x7fbc43fb4110 msgid -1 (timeout 0 usec) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: wait4msg continue ld 0x7fbc43fb4110 msgid -1 all 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ** ld 0x7fbc43fb4110 Connections: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: * host: 213.196.149.116 port: 389 (default) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: refcnt: 2 status: Connected Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: last used: Fri Sep 6 13:06:10 2013 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ** ld 0x7fbc43fb4110 Outstanding Requests: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: * msgid 5, origid 5, status InProgress Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: outstanding referrals 0, parent count 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ld 0x7fbc43fb4110 request count 1 (abandoned 0) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ** ld 0x7fbc43fb4110 Response Queue: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: Empty Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ld 0x7fbc43fb4110 response count 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_chkResponseList ld 0x7fbc43fb4110 msgid -1 all 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_chkResponseList returns ld 0x7fbc43fb4110 NULL Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_int_select Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_result ld 0x7fbc43fb4110 msgid -1 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: wait4msg ld 0x7fbc43fb4110 msgid -1 (timeout 0 usec) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: wait4msg continue ld 0x7fbc43fb4110 msgid -1 all 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ** ld 0x7fbc43fb4110 Connections: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: * host: 213.196.149.116 port: 389 (default) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: refcnt: 2 status: Connected Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: last used: Fri Sep 6 13:06:10 2013 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ** ld 0x7fbc43fb4110 Outstanding Requests: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: * msgid 5, origid 5, status InProgress Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: outstanding referrals 0, parent count 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ld 0x7fbc43fb4110 request count 1 (abandoned 0) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ** ld 0x7fbc43fb4110 Response Queue: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: Empty Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ld 0x7fbc43fb4110 response count 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_chkResponseList ld 0x7fbc43fb4110 msgid -1 all 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_chkResponseList returns ld 0x7fbc43fb4110 NULL Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_int_select Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: read1msg: ld 0x7fbc43fb4110 msgid -1 all 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: read1msg: ld 0x7fbc43fb4110 msgid 5 message type search-result Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: read1msg: ld 0x7fbc43fb4110 0 new referrals Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: read1msg: mark request completed, ld 0x7fbc43fb4110 msgid 5 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: request done: ld 0x7fbc43fb4110 msgid 5 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: res_errno: 0, res_error: <>, res_matched: <> Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_free_request (origid 5, msgid 5) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_parse_result Sep 6 13:06:10 kolab-frontend dovecot: auth: ldap(tobi.szyndler(a)datapark.li,213.196.149.1,<88FSBrXlSQDVxJUB>): unknown user Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_msgfree Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_result ld 0x7fbc43fb4110 msgid -1 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: wait4msg ld 0x7fbc43fb4110 msgid -1 (timeout 0 usec) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: wait4msg continue ld 0x7fbc43fb4110 msgid -1 all 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ** ld 0x7fbc43fb4110 Connections: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: * host: 213.196.149.116 port: 389 (default) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: refcnt: 1 status: Connected Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: last used: Fri Sep 6 13:06:10 2013 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ** ld 0x7fbc43fb4110 Outstanding Requests: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: Empty Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ld 0x7fbc43fb4110 request count 0 (abandoned 0) Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ** ld 0x7fbc43fb4110 Response Queue: Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: Empty Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ld 0x7fbc43fb4110 response count 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_chkResponseList ld 0x7fbc43fb4110 msgid -1 all 0 Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_chkResponseList returns ld 0x7fbc43fb4110 NULL Sep 6 13:06:10 kolab-frontend dovecot: auth: Error: ldap_int_select I'm pretty sure that the error is 30cm in front of the screen :-) but I really don't see the problem Any help is highly appreciated Thanks tobi

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[Dovecot] doveadm expunge problems
by nicolasfo 06 Sep '13

06 Sep '13

Hello there, I'm trying to use the doveadm expunge function, but it doesn't seems to work.. I have installed a mail test server using iredmail, Dovecot and postfix using mysql for authentications. I sent a email to this server, and change the timestamp using touch. the mail boxes are as follow : /home/mail/vmail1/mydomain.fr/n/i/c/nicolas-2013.09.05.14.30.49/Maildir I want to delete mails that are, let's say, 1day old from the "Junk" folder. (I put the mail I changed the date in it). I run this command : doveadm -Dv expunge -u nicolas(a)mydomain.fr mailbox "Junk" savedbefore 1d The mail is still in the "Junk" folder, and I have this output : root@mail:/home/mail/vmail1# doveadm -Dv expunge -u nicolas(a)mydomain.fr mailbox "Junk" savedbefore 1d doveadm(root): Debug: Loading modules from directory: /usr/lib/dovecot/modules doveadm(root): Debug: Module loaded: /usr/lib/dovecot/modules/lib10_quota_plugin.so doveadm(root): Debug: Loading modules from directory: /usr/lib/dovecot/modules/doveadm doveadm(root): Debug: Skipping module doveadm_acl_plugin, because dlopen() failed: /usr/lib/dovecot/modules/doveadm/lib10_doveadm_acl_plugin.so: undefined symbol: acl_user_module (this is usually intentional, so just ignore this message) doveadm(root): Debug: Skipping module doveadm_expire_plugin, because dlopen() failed: /usr/lib/dovecot/modules/doveadm/lib10_doveadm_expire_plugin.so: undefined symbol: expire_set_deinit (this is usually intentional, so just ignore this message) doveadm(root): Debug: Module loaded: /usr/lib/dovecot/modules/doveadm/lib10_doveadm_quota_plugin.so doveadm(root): Debug: Skipping module doveadm_zlib_plugin, because dlopen() failed: /usr/lib/dovecot/modules/doveadm/lib10_doveadm_zlib_plugin.so: undefined symbol: i_stream_create_deflate (this is usually intentional, so just ignore this message) doveadm(root): Debug: Skipping module doveadm_fts_plugin, because dlopen() failed: /usr/lib/dovecot/modules/doveadm/lib20_doveadm_fts_plugin.so: undefined symbol: fts_backend_rescan (this is usually intentional, so just ignore this message) doveadm(nicolas(a)mydomain.fr): Debug: Added userdb setting: plugin/master_user=nicolas(a)mydomain.fr doveadm(nicolas(a)mydomain.fr): Debug: Added userdb setting: plugin/quota_rule=*:bytes=1073741824 doveadm(nicolas(a)mydomain.fr): Debug: Effective uid=2000, gid=2000, home=/home/mail/vmail1/mydomain.fr/n/i/c/nicolas-2013.09.05.14.30.49/ doveadm(nicolas(a)mydomain.fr): Debug: Quota root: name=user backend=dict args=:proxy::quotadict doveadm(nicolas(a)mydomain.fr): Debug: Quota rule: root=user mailbox=* bytes=1073741824 messages=0 doveadm(nicolas(a)mydomain.fr): Debug: Quota warning: bytes=912680550 (85%) messages=0 reverse=no command=quota-warning 85 nicolas(a)mydomain.fr doveadm(nicolas(a)mydomain.fr): Debug: Quota warning: bytes=966367641 (90%) messages=0 reverse=no command=quota-warning 90 nicolas(a)mydomain.fr doveadm(nicolas(a)mydomain.fr): Debug: Quota warning: bytes=1020054732 (95%) messages=0 reverse=no command=quota-warning 95 nicolas(a)mydomain.fr doveadm(nicolas(a)mydomain.fr): Debug: dict quota: user=nicolas(a)mydomain.fr, uri=proxy::quotadict, noenforcing=0 doveadm(nicolas(a)mydomain.fr): Debug: Namespace : type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir://home/mail/vmail1/mydomain.fr/n/i/c/nicolas-2013.09.05.14.30.49//Maildir/:INDEX=//home/mail/vmail1/mydomain.fr/n/i/c/nicolas-2013.09.05.14.30.49//Maildir/ doveadm(nicolas(a)mydomain.fr): Debug: maildir++: root=//home/mail/vmail1/mydomain.fr/n/i/c/nicolas-2013.09.05.14.30.49//Maildir, index=, control=, inbox=//home/mail/vmail1/mydomain.fr/n/i/c/nicolas-2013.09.05.14.30.49//Maildir, alt= doveadm(nicolas(a)mydomain.fr): Debug: Namespace : type=shared, prefix=Shared/%u/, sep=/, inbox=no, hidden=no, list=children, subscriptions=yes location=maildir:/%Lh/Maildir/:INDEX=/%Lh/Maildir/Shared/%u doveadm(nicolas(a)mydomain.fr): Debug: shared: root=/var/run/dovecot, index=, control=, inbox=, alt= I don't understand, the output seems to be OK, except loading modules at the begining, but I think there's no effect to expunge command... Anyone to help me, please ? Thnaks in advance Nicolas -- View this message in context: http://dovecot.2317879.n4.nabble.com/doveadm-expunge-problems-tp44200.html Sent from the Dovecot mailing list archive at Nabble.com.

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[Dovecot] stopping dictionary attacks (pop3)
by other＠ahhyes.net 05 Sep '13

05 Sep '13

Hi Guys, I was really hoping a couple of years later this would be addressed... I'm running Dovecot 2.2.5 on FreeBSD. Is there anyway to limit the number of auth attempts allowed in a single session? The reason for this is because I have "fail2ban" setup to firewall out any IP addresses that repeatedly auth fails. The issue occurs when the connection is already in an "established" state and the attacker uses the existing session to hammer away, fail2ban becomes ineffective as dovecot appears to allow the person to attempt authentication ad infinitum. It would be nice if there was config option that would for example cause the software to close the connection after X failed attempts. I use "pf" as the firewall on FreeBSD. Unless there was some command I could have fail2ban run a command that would destroy any tcp sessions in an established state prior to adding the offending IP to the block list, that would be the only way around the problem. Ideally it would be nice for dovecot have an option to control the number of failed auth attempts. Any suggestions? Cheers, Alex.

2 3

[Dovecot] Received header only showing localhost
by Matt Devaney 05 Sep '13

05 Sep '13

Hi all, Im a new dovecot user and a first-time poster so please forgive me if this is a stupid question, or even (as I suspect it might be) not really a Dovecot question. My system is the fairly typical mix of postfix, amavis-new, and Dovecot. For some reason Ive noticed that when I look at the mail headers for delivered messages the Received header is missing the detail of any external servers that the mail went through, and additionally the tag appears twice; for example the Welcome to the dovecot mailing list email has: Received: from localhost (localhost [127.0.0.1]) by droplet.the-wyvern.net (Postfix) with ESMTP id DDDD163F73 for <myname(a)mydomain.net>; Mon, 26 Aug 2013 16:40:19 +0000 (UTC) Received: from droplet.the-wyvern.net ([127.0.0.1]) by localhost (droplet.the-wyvern.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6AFMiG0TAHUv for <myname(a)mydomain.net>; Mon, 26 Aug 2013 16:40:17 +0000 (UTC) Searching through the dovecot.markmail archive I can see this doesnt seem to be too unusual in that there are other examples where folk have posted message headers with the above format, however Im wondering if theres a good reason for it and if I can turn it off? I quite like being able to see where my mail came from :) If theres a man / wiki page to read somewhere that explains it then please feel free to tell me to RTM (.. long as you also point me in the right direction :p ) Thanks, Matt

2 4

[Dovecot] OT: z-Push
by Christian Rößner 04 Sep '13

04 Sep '13

Hi, just a short question: I have installed and configured z-Push to use BackendIMAP. On my iPhone I have created an account and I can see my mails. Also sending works. So far so good. Now the question: When I create a new folder i.e. Test under the root (/), then I get an error. And after resyncing the folder has been created not under /, but under /0/Test. Also I can not remove that folder over ActiveSync. Does somebody have z-Push fully working with Dovecot or is z-Push designed for Cyrus and only some features are working with Dovecot? So at the moment folder create/move/delete does not work here with z-Push-2.0.3 and Dovecot 2.1.9 Thanks in advance -Christian Rößner --- Bachelor of Science Informatik Erlenwiese 14, 36304 Alsfeld T: +49 6631 78823400, F: +49 6631 78823409, M: +49 176 93118939 USt-IdNr.: DE225643613, http://www.roessner-network-solutions.com

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[Dovecot] Dovecot is not creating directories properly for new accounts
by Chris Lasater 04 Sep '13

04 Sep '13

Hi, I have just set up a new dovecot server with Dovecot 2.2.5. When I create a new user and try to authenticate I get the following error Sep 03 14:33:38 imap(test2): Error: user test2: Initialization failed: Initializing mail storage from mail_location setting failed: mkdir(/home/user/apps/var/mail/imap/test2/mailboxes) failed: Permission denied (euid=503(imapd) egid=503(imapd) missing +w perm: /home/user/apps/var/mail, we're not in group 502(dovecot), dir owned by 502:502 mode=0775) Sep 03 14:33:38 imap(test2): Error: Invalid user settings. Refer to server log for more information. imapd is in the dovecot group and here are the permissions [user@MB1 logs]$ ll /home/user/apps/var/ total 4 drwxrwxr-x 4 dovecot dovecot 4096 Sep 3 14:35 mail [user@MB1 logs]$ id imapd uid=503(imapd) gid=503(imapd) groups=503(imapd),500(user),502(dovecot) if I su - imapd and then run mkdir -p /home/user/apps/var/mail/imap/test2/mailboxes everything starts working and the user can log in. Isn't Dovecot supposed to be able to create these?

2 1

[Dovecot] dsync - convert plugin missing?
by Regan Yelcich 04 Sep '13

04 Sep '13

I'm looking to convert my mbox mailboxes over to Maildir. But when I try to run the dsync command: (changed with my variables) dsync -u username mirror mbox:~/mail:INBOX=/var/mail/username found on this dovecot v2.X page here: http://wiki2.dovecot.org/Migration/MailFormat I get an error that it can't find the "convert" plugin. Am I doing something wrong? Thanks.

1 0

Re: [Dovecot] Deleting messages with Mac Mail via IMAP
by Tim Schneider 04 Sep '13

04 Sep '13

The right wording (expunge) provided me with some clues. Anyway, Mac Mail does not have such a flag. It seems to be deliberately designed to do the expunge on quitting the application. Expunge can also be triggered by using cmd+shift+k with no marked messages to empty all trashes. Using this command, one can also mark a message and expunge it directly, bypassing the trash. I don't want to exclude the possiblity that this has got something to do with the IDLE system, and could be resolved by, for example, providing the right IMAP capabilities flags upon com init. Interestingly, iOS mail does delete the message in the inbox directly when moving it to trash. Thanks anyway to the contributors of this thread, I think I will have to accept this behavior, since Apple does usually not care about customer requests to resolve bugs. Mostly they declare them to be intended stupidity, even when they sell items that behave just the opposite way. Anyway, Zarafa mail server has a flag imap_expunge_on_delete. Perhaps this would be a useful feature for Dovecot to protect admins from angry customers who use well-designed Apple products. On 2013-09-03, at 20:16 , lists-dovecot <replies-lists-a1z2-dovecot(a)listmail.innovate.net> wrote: > > > ------------ Original Message ------------ >> Date: Tuesday, September 03, 2013 07:11:40 PM +0200 >> From: Tim Schneider <tim.schneider(a)portabile.net> >> To: dovecot(a)dovecot.org >> Subject: [Dovecot] Deleting messages with Mac Mail via IMAP >> >> Hello mailing list subscribers! >> >> When I delete a message in Mac Mail 6.5 (OS X 10.8.4), >> with the option to move messages to the trash set in Mac Mail >> account preferences, the message is copied to the trash, and >> markes as trashed in the cur/inbox directory on the server (STa >> flag in the file name). >> >> My horde webmail then displays this messages correctly as trashed >> in the inbox. However, I want the message to be gone from the >> inbox. >> >> Quitting Mac Mail deletes it in the inbox reliably. >> >> Is there any IMAP setting for dovecot to get move, and not copy >> and mark as trashed behavior? >>

1 0

[Dovecot] Deleting messages with Mac Mail via IMAP
by Tim Schneider 03 Sep '13

03 Sep '13

Hello mailing list subscribers! When I delete a message in Mac Mail 6.5 (OS X 10.8.4), with the option to move messages to the trash set in Mac Mail account preferences, the message is copied to the trash, and markes as trashed in the cur/inbox directory on the server (STa flag in the file name). My horde webmail then displays this messages correctly as trashed in the inbox. However, I want the message to be gone from the inbox. Quitting Mac Mail deletes it in the inbox reliably. Is there any IMAP setting for dovecot to get move, and not copy and mark as trashed behavior? Here are my dovecot settings: # 2.1.7: /etc/dovecot/dovecot.conf # OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.1 ext4 auth_mechanisms = plain login mail_location = maildir:/var/mail/vhosts/%d/%n mail_privileged_group = mail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } postmaster_address = admin(a)xxx.xxx protocols = imap pop3 lmtp sieve service auth-worker { user = vmail } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { mode = 0600 user = vmail } user = dovecot } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 ssl = yes } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 995 ssl = yes } } ssl = required ssl_cert = </etc/ssl/certs/mailportabile.pem ssl_key = </etc/ssl/private/mailportabile.key submission_host = localhost userdb { args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n driver = static } protocol lda { mail_plugins = " sieve" }

3 2

Re: [Dovecot] Logging passwords on auth failure/dealing with botnets
by Joseph Tam 03 Sep '13

03 Sep '13

Michael Smith writes: > We're already running fail2ban, but it doesn't seem that effective > against botnets, when they only do one attempt per IP. Yeah, distributed BFDs are tough to block unless you can characterize the clients well. > That leaves us back to getting dovecot to log the tried password for > unknown users. Another tactic might be to hook in a authentication script: http://wiki2.dovecot.org/AuthDatabase/CheckPassword You can run this as an external plugin and won't have to muck into the dovecot innards. From here, you can log attempts, keep track of bad IPs, or take action if you spot a username/password combination that merits instant blacklisting. Joseph Tam <jtam.home(a)gmail.com>

5 10

[Dovecot] sync re-copies emails assigning new UIDs
by Anand Kumria 03 Sep '13

03 Sep '13

Hi, I have been (attempting) to transition a company from in-house dovecot 1.x to a hosted dovecot 2.2 setup. I am running the doveadm sync command, and for the four mailboxes have been blocked -- sync'ing seem to be copying the same mails, over and over (note, initially I was using doveadm backup but my reading has indicated that 'doveadm sync' is better) Example: # date && doveadm -v -o imapc_user=kaye(a)example.com -o imapc_password=*pass* -o imapc_host=imap.example.com -o imapc_port=993 -o imapc_ssl=imaps -o imap c_ssl_dir=/etc/ssl -o imapc_feature=rfc822.size -o imapc_ssl_verify=no sync -1 -R -u kaye(a)example.com imapc: Sat Aug 3 09:05:37 UTC 2013 [...] dsync(kaye(a)example.com): Info: copy from INBOX: box=INBOX, uid=5306, msgid=<FB3A2E1C62B148F8B057476BDCBB4A9B@THENORMANS>, size=13544 dsync(kaye(a)example.com): Info: copy from INBOX: box=INBOX, uid=5307, msgid=<006b01ce8dad$b8864930$2992db90$(a)com.au>, size=10163563 [...] dsync(kaye(a)example.com): Info: copy from INBOX: box=INBOX, uid=5311, msgid=< cm.083930.bijjdjk.jdkimlhij.r(a)createsend5.com>, size=46658 [...] # date && doveadm -v -o imapc_user=kaye(a)example.com -o imapc_password=*pass* -o imapc_host=imap.example.com -o imapc_port=993 -o imapc_ssl=imaps -o imapc_ssl_dir=/etc/ssl -o imapc_feature=rfc822.size -o imapc_ssl_verify=no sync -1 -R -u kaye(a)example.com imapc: Sat Aug 3 10:01:48 UTC 2013 [...] dsync(kaye(a)kamdha.com): Info: copy from INBOX: box=INBOX, uid=5324, msgid=<FB3A2E1C62B148F8B057476BDCBB4A9B@THENORMANS>, size=13544 dsync(kaye(a)kamdha.com): Info: copy from INBOX: box=INBOX, uid=5325, msgid=<006b01ce8dad$b8864930$2992db90$(a)com.au>, size=10163563 [...] dsync(kaye(a)kamdha.com): Info: copy from INBOX: box=INBOX, uid=5329, msgid=< cm.083930.bijjdjk.jdkimlhij.r(a)createsend5.com>, size=46658 [...] The exact same number of emails (some in the INBOX, some in the Sent folder) are transferred each time. In this case, I've firewalled the origin - so their entire mail system is stopped whilst I do the transfer just in case modifications of IMAP flags or additional delivieres might have been the problem. I am using Dovecot v2.2.4; is this normal expected behaviour? If so, what is the best way to ensure that a migration is done without data loss. If this isn't expected, has anyone else seen this kind of error before? Thanks, Anand

1 1

[Dovecot] setup of dovecot as proxy to dbmail
by Regan Yelcich 03 Sep '13

03 Sep '13

Can anyone point me in the direction of a detailed how-to for setting up a postfix and dovecot (proxy) node with dbmail? In particular I'm looking for a how-to which shows dovecot authenticating against the dbmail database directly. The only example I've found is this one which requires a duplication of the user database. http://content.fens.org/index.php?q=admin-howto/mail/dovecot2dbmail-proxy Thanks.

2 1

[Dovecot] Auth error in log
by Per-Henrik Lundblom 03 Sep '13

03 Sep '13

Hi, I have a setup with Dovecot handling a few virtual domains delivering mails to both local Unix account mailboxes and seperate mailboxes for virtual users defined in a MySQL database. A quick overview of the configuration shows two passdb definitions: auth default { mechanisms = plain login passdb pam { args = dovecot } passdb sql { args = /etc/dovecot/dovecot-sql.conf } userdb passwd { args = mail=maildir:~/Maildir blocking=yes } userdb static { args = uid=vmail gid=mail home=/var/spool/vmail/%d/%n allow_all_users=yes } user = root socket listen { master { path = /var/run/dovecot/auth-master mode = 0600 user = vmail group = mail } client { path = /var/spool/postfix/private/auth mode = 0660 user = postfix group = postfix } } !include_try /etc/dovecot/auth.d/*.auth } When a virtual user defined in the MySQL database tries to log in using IMAP or SMTP I always get auth failures logged in the system logs. Entries are like this: Aug 21 06:25:36 roadrunner dovecot-auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=luser(a)mydomain.com rhost=85.224.xx.xx I assume these failures comes form the fact that PAM doesn't recognize the virtual users and Dovecot continues to the SQL passdb entry. As a result I get a _lot_ of auth failures in the logs. I have tried to come up with a way where the auth failures from PAM arent't logged if the the SQL authenication is successful. Is this possible or are there any other recommended ways to handle this? /PH -- Per-Henrik Lundblom email: ph(a)whatever.nu phone: +46 733 207126 webpage: www.whatever.nu

2 3

[Dovecot] local AND virtual mail locations ?
by Pierre-Philipp Braun 02 Sep '13

02 Sep '13

Hi, I would like to use Dovecot not only for virtual mboxes, but also for local users. In other words, I would like to use different "mail_location"s depending on "passdb" "passwd-file" versus "passwd". I need that as the smtp daemon I am using (david parsons' postoffice smtp server) serves both but is only able to process messages through procmail on local users. Here are the two mail_locations I would like to use: mail_location: mbox:~/mail/:INBOX=/var/mail/%u mail_location: mbox:/var/spool/virtual/%d/%n.imap:INBOX=/var/spool/virtual/%d/%n depending on those passdb stanzas, respectively: passdb passwd-file { args = username_format=%n /etc/virtual/%d/passwd } passdb passwd { } Any help would be appreciated. Here's my Dovecot version and current working configuration for virtual users only: # dovecot -n dovecot -n # 1.2.17: /usr/local/etc/dovecot.conf # OS: FreeBSD 8.3-RELEASE amd64 ufs protocols: imap ssl: no disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable: /usr/local/libexec/dovecot/imap-login first_valid_uid: 6 first_valid_gid: 6 mail_location: mbox:/var/spool/virtual/%d/%n.imap:INBOX=/var/spool/virtual/%d/%n imap_client_workarounds: tb-extra-mailbox-sep auth default: user: mail passdb: driver: passwd-file args: username_format=%n /etc/virtual/%d/passwd userdb: driver: static args: uid=6 gid=6 I find that first_valid_uid and first_valid_gid don't look pretty but it seems mandatory for the standard 'mail' user and group ownerships to work on the virtual mbox files and folders. I created the user while the group already existed. If you have any advices on that too, I would be pleased. Thanks Pierre-Philipp

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[Dovecot] migration from IMAP/POP3 courier server to a remote dovecot server
by nik600 02 Sep '13

02 Sep '13

Dear all i'm planning a transparent migration from a courier server that provides both IMAP and POP3 access to users to a remote dovecot server with both IMAP and POP3 access. I have to migrate about 2500 users for 250 GB of space. I'm using dovecot 2.2.5.4 on debian6 squeeze. To make a transparent migration i have to maintain old IMAP UIDs and POP3 UIDs, so i've read http://wiki2.dovecot.org/Migration and http://wiki2.dovecot.org/Migration/Courier and http://wiki2.dovecot.org/Migration/Dsync And decided that probably the best tool to use is Dsync, as the courier-dovecot-migrate.pl<http://www.dovecot.org/tools/courier-dovecot-migrate.pl> script works only locally. I've tested the dsync following instructions reported above but after the migration of one test-account the client re-download messages. If i want to keep both IMAP UIDs and POP3 UIDs i have to sync both imapc and pop3c with two commands? doveadm -o imapc_user=foo -o pop3c_user=foo -o imapc_password=bar -o pop3c_password=bar backup -R -u user@domain imapc: doveadm -o imapc_user=foo -o pop3c_user=foo -o imapc_password=bar -o pop3c_password=bar backup -R -u user@domain pop3c: Or imapc is enough? Do you have any suggestion? Thanks -- /*************/ nik600 http://www.kumbe.it

1 2

[Dovecot] Getting back into Dovecot 2.2.5
by Kai Hendry 02 Sep '13

02 Sep '13

Hi there, I'm prompted to get into running my own mail server again with Gmail going bad. However I found /usr/share/doc/dovecot/example-config/conf.d/ a little scary, since I like to have my configs as minimalistic as possible, e.g. http://dabase.com/blog/Minimal_squid3_proxy_configuration/ So far I have: https://github.com/Webconverger/sg.webconverger.com/blob/master/dovecot/dov… I was kinda hoping for a Maildir, but this doesn't work: mail_location = maildir:~/Maildir:LAYOUT=fs:INBOX=/var/mail/%u I do realise /var/mail/%u is a mbox, but I was wondering if there could be some clever conversion. I was surprised something like INBOX=/var/mail/%u wasn't the default btw. Also surprised dovecot seems to choke on single line syntax like `passdb { driver = pam }` :-) Next thing I'm confused about is the `namespace inbox {` stuff. Is it really needed? I was expecting Dovecot to create the folders once I defined them, but mutt couldn't see them until I created them myself. The mail server is just for myself and a few colleagues. We will probably use mutt as our MUA and Apple Mail on IOS when we are out & about. I next plan to integrate dspam, and work out how to sort mails into folders like I previously effectively had with Gmail's labels. I was confused to which mechanism I should be using to sort mail into folders with rules. Sieve? Back to Procmail? Pigeonhole? I'm looking to avoid complexity here. On the topic of search, can I get away with not running a Solr server? Since I shudder at the thought of running Tomcat. http://wiki2.dovecot.org/Plugins/FTS Kiitos paljon for any pointers!

3 4

[Dovecot] Auto-blocking faulty login attempts
by Jos Chrispijn 01 Sep '13

01 Sep '13

Dear group, How can I block login attempts to dovecot after trying 5 times in error? -- Best regards, Jos Chrispijn --- Artificial intelligence is no match for natural stupidity

3 2

[Dovecot] Dovecot and Postfix Authentication
by Christopher Trom 31 Aug '13

31 Aug '13

I am a student and am trying to get a mail server setup for a project. I have all of the Postfix configuration taken care of, but I am confused by the way that authentication works with Dovecot in the mix. As a user of the system, am I supposed to authenticate myself to Postfix, Dovecot, both individually, or both together? My Postfix users are stored in a PostgreSQL database, should Dovecot also be connected to this db? Some basic pointers on how this setup ought to look is all that I'm hoping for. Thank you, Christopher

2 1

Re: [Dovecot] Bizarre permissions problem
by Joseph Tam 31 Aug '13

31 Aug '13

Bill Oliver writes: > There's *one* user I can't get it to work on without a > workaround. The user is "newuser" and the uid is 1111 (actual name and > number changed to protect the innocent). The error I get in my maillog > is: > > The error I get in may maillog is: > Aug 29 16:02:11 localbox dovecot: imap(newuser): Error: chown(/home/newuser/mail/.imap/INBOX, -1, 12(mail)) failed: Operation not permitted (egid=1111(newuser), group based on /var/mail/newuser) > Aug 29 16:02:11 localbox dovecot: imap(newuser): Error: mkdir(/home/newuser/mail/.imap/INBOX) failed: Operation not permitted > Aug 29 16:02:11 localbox dovecot: imap(newuser): Error: chown(/home/newuser/mail/.imap/INBOX, -1, 12(mail)) failed: Operation not permitted (egid=1111(newuser), group based on /var/mail/newuser) > Aug 29 16:02:11 localbox dovecot: imap(newuser): Error: mkdir(/home/newuser/mail/.imap/INBOX) failed: Operation not permitted > Aug 29 16:02:11 localbox dovecot: imap(newuser): Error: chown(/home/newuser/mail/.imap/INBOX, -1, 12(mail)) failed: Operation not permitted (egid=1111(newuser), group based on /var/mail/newuser) > Aug 29 16:02:11 localbox dovecot: imap(newuser): Error: mkdir(/home/newuser/mail/.imap/INBOX) failed: Operation not permitted > > Now, it looks to me like dovecot is saying that the user newuser can't > get to the /home/newuser/mail/.imap directory because it doesn't have > permission. However, the user newuser has all the permissions it needs: > > $ ls -la /home/newuser/mail > > total 20 > drwxrw---- 3 newuser newuser 4096 Aug 29 15:01 . > drwxrw---- 6 newuser newuser 4096 Aug 29 12:16 .. > drwxrwx--- 2 newuser newuser 4096 Aug 29 16:05 .imap > -rw-rw---- 1 newuser newuser 499 Aug 13 07:56 saved-messages > -rw-rw---- 1 newuser newuser 1756 Aug 16 11:15 sent-mail The output of doveconf -n would have been useful, especially as it relates to your mail_location value, but I can make a pretty good guess at what is happening. Dovecot is trying to create indices with analogous permissions to your mailbox files. Your user's INBOX (/var/mail/newuser) has permission user:group:mode = 1111:12:0660 *but* newuser is not in group "mail" (GID 12), hence it cannot do the required chown operations. (Notice the mode of .imap/: the group write is on so the chmod worked.) Your INBOX ended up this way because some LDA's auto-create new INBOX's with these permissions (to allow access to other part of the mail sysyem that are set-gid "mail"). Options: 1) chmod g-rwx /var/mail/newuser - assumes you have no other parts of your mailsystem that needs access to all user INBOX by assuming group "mail". - dovecot is smart enough to figure out group membersip is irrelevant is groups access is nil. 2) chgrp newuser /var/mail/newuser 3) To avoid future problems: make sure new mailboxes are created with workable permissions. There are also dovecot configs that loosen up some group access, but you'll have to investigate that yourself. Joseph Tam <tam(a)math.ubc.ca>

1 0

[Dovecot] kqueue bug?
by Timo Sirainen 31 Aug '13

31 Aug '13

Apparently Dovecot with kqueue ioloop enabled causes random crashes in FreeBSD 9.1. Anyone else noticed something like that? I'm wondering if Dovecot's kqueue code has a bug somewhere (I can't find it) or could it be that FreeBSD itself has a bug? Anyway it seems to be returning events for filters that have already been removed.

4 3

[Dovecot] Log successful login plain text password
by Marco Fretz 30 Aug '13

30 Aug '13

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi everyone, I want to use dovecot as a IMAP and POP3 proxy in front of our current E-Mail hosting server to log the plain text passwords of all successful logins for migration reasons. Actually I don't need the password to see in plain text, storing them as SHA256-CRYPT (or something dovecot can use later for auth) hash in a file or DB would be fine, too. I need this for the migration from the current mail server (using proprietary hashing to store passwords) to a new postfix / dovecot base mail system. I played around with "auth_debug_passwords" and all debug / logging options I found in the manual. Nothing logs successful login plaintext passwords. Any hint welcome. Thanks a lot, Marco -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.13 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJSHZ9tAAoJEKxm7Ju3UATui2cP/A3cf2TrNvOjjtP1TCgZZ5EC igsgngPlKiXU/RwHO9shBLXUyhKDHPGihNf9KL/RjoFnrgX1asPd/RF/2b080IU3 bNO49BLs8QqoroKz5E+TL8UNixlO5YQjnerKfJ5GIJbSUTC3MaxmN62Cl9jEaTWu 4dX3MXoB3ghoxt6FETSLXz6cEXsGd6KvqxolQC13NYtvpZED+qk7z3RywK8Xp/Au Ipx3xEnDRc/YvG3PeJlsjF9Ge80GxVVH0nudNOV/zmyuNfh4PkPRerk1R4Px01zI sxnXvcNjjenCJ6DMKBmOCyBii9Wl9i4opw9k4X4Z6MFEZGiodRz1usKWJMT0VqUG NBEJDOWsoWpasWMCtduBRrNQS3JI+o1tebDAI5n3K4lJ2d27+nosDvdQ8vNlVszM 8nhSn228RQNy9SJZNAvspOYQBM2gt5IQyWGA4jhrMUkwKeTfHZik8vh8lEcwbK9q H6Myue+i+G8wVa57F1V7/7x2LNGn56BWxTDlBrtKdK3KphCgEoCny/f5VYerO8It MnCMLPXI2oCC8qqkK7x45SYSe/eQhgV93LHpI5z25TqyeJ6R+7dglderRDQcNN0n OtbYMYkqlF8xJ4k+rVFwOC5VD7Bq+S2Q4LyLEf7wFH32Dc12pI/SnAL8DPvkNgbL FshgaVOXUEkb0WhnvROl =oEzx -----END PGP SIGNATURE-----

2 5

[Dovecot] Pigeonhole Sieve - sent message to xmpp account
by Ingo Thierack 30 Aug '13

30 Aug '13

Hello, does someone know, how far the implementation of enotify - xmpp is. Would be nice to push notifications to an jabber account for specific filtered mails. Regards, Ingo

2 1

[Dovecot] Bizarre permissions problem
by Bill Oliver 30 Aug '13

30 Aug '13

Help! I have been using dovecot for some years with great success. A little while ago, I changed my mail server from Fedora to CentOS linux. I reinstalled dovecot, and *almost* everything seems to be working, but one thing. There's *one* user I can't get it to work on without a workaround. The user is "newuser" and the uid is 1111 (actual name and number changed to protect the innocent). The error I get in my maillog is: The error I get in may maillog is: Aug 29 16:02:11 localbox dovecot: imap(newuser): Error: chown(/home/newuser/mail/.imap/INBOX, -1, 12(mail)) failed: Operation not permitted (egid=1111(newuser), group based on /var/mail/newuser) Aug 29 16:02:11 localbox dovecot: imap(newuser): Error: mkdir(/home/newuser/mail/.imap/INBOX) failed: Operation not permitted Aug 29 16:02:11 localbox dovecot: imap(newuser): Error: chown(/home/newuser/mail/.imap/INBOX, -1, 12(mail)) failed: Operation not permitted (egid=1111(newuser), group based on /var/mail/newuser) Aug 29 16:02:11 localbox dovecot: imap(newuser): Error: mkdir(/home/newuser/mail/.imap/INBOX) failed: Operation not permitted Aug 29 16:02:11 localbox dovecot: imap(newuser): Error: chown(/home/newuser/mail/.imap/INBOX, -1, 12(mail)) failed: Operation not permitted (egid=1111(newuser), group based on /var/mail/newuser) Aug 29 16:02:11 localbox dovecot: imap(newuser): Error: mkdir(/home/newuser/mail/.imap/INBOX) failed: Operation not permitted Aug 29 16:02:11 localbox dovecot: imap(newuser): Disconnected: Logged out bytes=108/669 Now, it looks to me like dovecot is saying that the user newuser can't get to the /home/newuser/mail/.imap directory because it doesn't have permission. However, the user newuser has all the permissions it needs: $ ls -la /home/newuser/mail total 20 drwxrw---- 3 newuser newuser 4096 Aug 29 15:01 . drwxrw---- 6 newuser newuser 4096 Aug 29 12:16 .. drwxrwx--- 2 newuser newuser 4096 Aug 29 16:05 .imap -rw-rw---- 1 newuser newuser 499 Aug 13 07:56 saved-messages -rw-rw---- 1 newuser newuser 1756 Aug 16 11:15 sent-mail newuser has the correct uid (1111) in /etc/dovecot/users newuser *is* the correct uid for that user, i.e.: $ id -u newuser 1111 the password is correct Both my web mail package (roundcube) and my android fail. Both work fine with all other accounts that are set up for imap services. The workaround, it turns out, is that if I make the directory /home/newuser/.imap/INBOX by hand as the user newuser, then things work. So, things seem to be working. However, I just don't understand why *this* user is having problems when none of the others are... The only thing that sets this user apart from any of the others is that it has administration privileges for the roundcube mailer MySQL database. Any explanations? Thanks! billo

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[Dovecot] Sieve vacation reply problem (Dovecot+Sieve/Sendmail/Horde)
by megodin＠inboxalias.com 29 Aug '13

29 Aug '13

Hello Dovecot community, I have an annoying problem with successfully activating Sieve vacation replies - on which I have been working hard the last days without success :( I'm using Dovecot 2.2 + Sendmail + Sieve connected with Horde web-mailer IMP H3 which is generally working fine. BUT: Whenever I activate vacation script in Horde (via Ingo) and send a test-mail to this account, the mail itself arrives but the auto-vacation-reply failes: [mail.err] dovecot: lda(exampleuser): Error: sieve: original envelope recipient address 'exampleuser@dovecot_localhost' is unparsable [mail.warning] dovecot: lda(exampleuser): Warning: sieve: msgid=: vacation action aborted: envelope recipient is <> The Sieve Script which is generated and executed: # Sieve Filter produced by Ingo (http://www.horde.org/ingo/) (20.08.2013, 16:10) require ["vacation", "regex"]; # Abwesenheit if allof ( not exists ["list-help", "list-unsubscribe", "list-subscribe", "list-owner", "list-post", "list-archive", "list-id", "Mailing-List"], not header :comparator "i;ascii-casemap" :is "Precedence" ["list", "bulk", "junk"], not header :comparator "i;ascii-casemap" :matches "To" "Multiple recipients of*" ) { vacation :days 7 :addresses "example.user(a)example.com" :subject "vacation" "I am on vacation until xxxx. Please refer all urgent business to devnull(a)example.com ."; } I understand that Sieve is trying to send vacation replies to the envelope sender - apparently it gets it on the wrong line somewhere from the sendmail config. To get sendmail working along with Dovecot, I had to do some modifications: in /etc/mail/virtusertable (Alias with domain-path) @vlmail.example.com %1@dovecot_localhost in /etc/mail/access (allows relaying) to:dovecot_localhost RELAY in /etc/mail/mailertable (where to be relayed) dovecot_localhost dovecot:vlmail.example.com in /etc/mail/sendmail.cf (relevant part for the Dovecot Mailer specification): Mdovecot, P=/usr/libexec/dovecot/dovecot-lda, F=lDFMPhnu59, S=EnvFromSMTP/HdrFromSMTP, R=EnvToSMTP/HdrFromSMTP, U=vmail:vmail, T=DNS/RFC822/X-Unix, A=/usr/libexec/dovecot/dovecot-lda -d $u After several hours playing with sendmail's config I came to the end that sendmail's part must be already over when sieve is getting the original envelope recipient - it seems like it gets it from dovecot-lda. Though, when playing with the Dovecot Mailer specifications in sendmail.cf I can get different error message if I add A=/usr/libexec/dovecot/dovecot-lda -d $u -a $n (adding username part in destination address): [mail.info] dovecot: lda(exampleuser): sieve: msgid=: discarding vacation response for implicitly delivered message; no known (envelope) recipient address found in message headers (recipient=, and additional `:addresses' are specified) BTW, the original mails arriving have a valid Return-Path in header... I am thinking of writing global Sieve scripts (executing before the user's private sieve script), telling Sieve to use the TO: field instead of the Envelope sender but I'm not sure if this is possible, and if, which commands are needed specifically. I really start getting desperate... Can somebody get me some clue what is wrong in my config / where I should put modifications to get sieve vacation replys working properly?! Thanks in advance!! Megodin My Setup: - Dovecot EE 2.2.5.3 + pigeonhole Sieve 0.4.1 - Sendmail Version 8.14.4 (compiled with: DNSMAP HESIOD HES_GETMAILHOST LDAPMAP LOG MAP_REGEX MATCHGECOS MILTER MIME7TO8 MIME8TO7 NAMED_BIND NETINET NETINET6 NETUNIX NEWDB NIS PIPELINING SASLv2 SCANF SOCKETMAP STARTTLS TCPWRAPPERS USERDB USE_LDAP_INIT) - Horde 3.3.13 (Ingo H3 1.2.6) doveconf -n # 2.2.5.3 (f54f8c8f5502): /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-279.22.1.el6.x86_64 x86_64 CentOS release 6.4 (Final) nfs auth_cache_size = 10 M auth_cache_ttl = 10 mins auth_debug = yes auth_master_user_separator = * auth_username_format = %n auth_verbose = yes disable_plaintext_auth = no listen = * lock_method = dotlock mail_debug = yes mail_fsync = always mail_gid = vmail mail_home = /mnt/vmails/%u mail_location = sdbox:/mnt/vmails/%u/mailstore mail_plugins = " quota fts fts_lucene" mail_privileged_group = mail mail_uid = vmail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave mmap_disable = yes passdb { args = /etc/dovecot/users.blocked deny = yes driver = passwd-file } passdb { args = /etc/dovecot/passwd.masterusers driver = passwd-file master = yes } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { fts = lucene fts_lucene = whitespace_chars=@. quota = dict:User quota::file:%h/dovecot-quota quota_rule = *:storage=100M quota_rule2 = Trash:storage=+50M quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=98%% quota-warning 98 %u sieve = /mnt/vmails/%u/.dovecot.sieve sieve_dir = /mnt/vmails/%u/sieve sieve_global_dir = /var/lib/dovecot/sieve/global/ sieve_global_path = /var/lib/dovecot/sieve/default.sieve } postmaster_address = postmaster(a)example.com protocols = imap pop3 sieve service auth { unix_listener auth-userdb { group = vmail user = vmail } } service managesieve-login { inet_listener sieve { port = 4190 } } service quota-warning { executable = script /usr/local/bin/quota-warning.sh unix_listener quota-warning { user = vmail } user = vmail } ssl_cert = --- Alle PostfÃ¤cher an einem Ort. Jetzt wechseln und E-Mail-Adresse mitnehmen! http://email.freenet.de/basic/Informationen _________________________________________________________________ Send and receive anonymous emails to your inbox with InboxAlias. http://www.inboxalias.com

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[Dovecot] 2.2.4 + metadata plugin: autoconf failed
by Andreas Schulze 29 Aug '13

29 Aug '13

Hello, I can compile metadata plugin using debian squeeze + wheezy. But build on suse enterprise server 9,10 and 11 failed. The metadata plugin require autoconf-2.65 which i too new. On the other side I can build the dovecot-2.2.4 and pigeonhole-0.4.0 plugin without problems: dovecot require autoconf-2.59 and pigeonhole does not require any specific autoconf version. I asked the authors of the plugin for support but got no response. Maybe somebody could review the plugin. Thanks Andreas -- Andreas Schulze Internetdienste | P252 DATEV eG 90329 Nürnberg | Telefon +49 911 319-0 | Telefax +49 911 319-3196 E-Mail info @datev.de | Internet www.datev.de Sitz: 90429 Nürnberg, Paumgartnerstr. 6-14 | Registergericht Nürnberg, GenReg Nr.70 Vorstand Prof. Dieter Kempf (Vorsitzender) Dipl.-Kfm. Wolfgang Stegmann (stellvertretender Vorsitzender) Dipl.-Kfm. Michael Leistenschneider Dipl.-Kfm. Dr. Robert Mayr Jörg Rabe v. Pappenheim Dipl.-Vw. Eckhard Schwarzer Vorsitzender des Aufsichtsrates: Reinhard Verholen

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Re: [Dovecot] Dovecot Dsync
by Ed W 29 Aug '13

29 Aug '13

On 27/08/2013 09:54, Ben wrote: > On 23/08/2013 13:08, Ed W wrote: >> Hi >> >>> I'm on an Ubuntu LTS release so the dovecot came from their release. >>> I'd prefer to stay that way unless I really have to... >> >> Everyone is entitled to their own opinions, but "IMHO" this kind of >> attitude is a huge detriment to most software projects. I see very >> little reason to take such policies personally... >> >> 1) I use virtualisation (especially lightweight virtualisation such as >> vservers) so that each service is in its own container. Now if I have no >> interest in some container and want to let it rot (ie as per LTS), then >> I can just do so. >> 2) I use a fast moving rolling distro (gentoo in my case, Arch is >> probably a good choice also) so that I have the option to stay up to >> date when I want to >> >> The end result is you can be as up to date as you want, or let things >> rot, as you please. >> >> Unfortunately if you want to use a very old bit of software, then you >> also get to keep all it's bugs... Sorry. >> >> Good luck! Hope this inspires you to try a different route! >> >> Ed W > > Whilst to some degree I appreciate where you're coming from and agree > with you to a certain extent, I would caution that following the > bleeding edge, always running the latest versions is not without risk > or bugs either ! OK, but virtualisation also helps you mitigate this: - I setup my "containers" so that I have at least two mount points, one for the operating system and any data broken out into it's own mount. - This makes it quite simple to duplicate the container and spin up a test version pointing if required at the live data - Now you can run a test upgrade on the test container. If it works either swap them around or upgrade the original Additionally: - My choice of distro (gentoo) makes it fairly simple to build binary packages of the software I'm using. - I then use these binary packages on all my containers, additionally with guided profiles which control which packages and which options we deploy. - It's fairly simple to roll back most packages to the previous binary version if a problem is detected (logging of package changes is built-in) So it's quite low risk to use such a rolling distro in general. Note, I can't speak for other distros, but gentoo "stable" is fairly conservative and shouldn't be a problem for an experienced admin to keep up to date. It has the option to unmask "bleeding edge" packages where necessary and this can be useful to hit specific version numbers of software. It's also pretty trivial to keep a private repo of customised packages (ebuilds) with either personal patches or to pin certain versions of software. (So for example if you run, say, Dovecot with a few custom patches, then it's fairly trivial to drop these patches in a directory and now you can use the package manager to follow stable builds, but your custom patches will be rolled in for you with each update - can be very handy for some requirements) I don't have the same experience with RPM/DEB so I can't say that all the same is easy to do, but the key thing is the use of containers/virtualisation to assist with testing and upgrades. Even worst case you have to do a whole OS upgrade, at least if you can do that in a test container while the live remains running, is a big advantage Good luck Ed W

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Re: [Dovecot] mailbox_list_index, stops showing new mails in mailboxes
by Joseph Tam 29 Aug '13

29 Aug '13

Anton Lundin writes: > I'm using 2.2.4 over imap and ssh/imap, and after a while dovecot > stops noticing new mail in some folders. Its always the same 2-3 > folders of about 30. > ... > This is dovecot 2.2.4, running on Solaris 10 x86_64 to homedirs on zfs, > where procmail is used to deliver mail to mailboxes in mbox-format. What's your procmail recipe for delivering messages? If you're storing it directly to a mbox file, dovecot will never get a chance to see it and update the indices. An example of invoking LDA to store messages :0 Hw * /^From:.*dummy@/ | dovecot-lda -d yourusername -m dummybox # Dump mail into my INBOX using dovecot's LDA :0 w | dovecot-lda -d yourusername Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] Issues with dovecot-antipsam plugin
by Vijay Rajah 29 Aug '13

29 Aug '13

Hello list, I have a postfix 2.11 with dovecot 2.2.5 instance. I have configured and installed anavisd-new to use Spamassassin. I want to train the filter. For that i choose dovecot's antispam plugin using mailtrain backend. I compiled and installed the latest version of the antispam plugin from http://hg.dovecot.org/dovecot-antispam-plugin/rev/5ebc6aae4d7c The configuration is below. Whenever I receive an email, the LMTP process segfaults. If I comment out the antispam plugin part in the config files, all works good. THis leads me to believe the issue is with antispam plugin, or its configuration. Here is what i see in /var/log/mailllog Aug 28 23:06:31 hostname.tld postfix/qmgr[1437]: 055F6345E: from=< sender(a)example.com>, size=10370, nrcpt=1 (queue active) Aug 28 23:06:31 hostname.tld postfix/smtpd[5512]: disconnect from localhost[127.0.0.1] Aug 28 23:06:31 hostname.tld amavis[5369]: (05369-05) Passed SPAM {RelayedTaggedInbound,Quarantined}, [74.125.82.176]:51219 [74.125.82.176] < sender(a)example.com> -> <email(a)mydomain.tld>, quarantine: spam-J09TFNU33sxa.gz, Queue-ID: 3A8093119, Message-ID: < CAMGVk5vH9YzkNFJ3xnWJ0060vpuf1PPzaCHWx71AmGF_qgJTmg(a)mail.gmail.com>, mail_id: J09TFNU33sxa, Hits: 12.123, size: 9323, queued_as: 055F6345E, dkim_sd=20120113:gmail.com, 606 ms Aug 28 23:06:31 hostname.tld postfix/lmtp[5510]: 3A8093119: to=<email(a)mydomain.tld>, relay=127.0.0.1[127.0.0.1]:10024, delay=1.6, delays=0.94/0/0/0.61, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as 055F6345E) Aug 28 23:06:31 hostname.tld postfix/qmgr[1437]: 3A8093119: removed Aug 28 23:06:31 hostname.tld dovecot: lmtp(5514): Connect from local Aug 28 23:06:31 hostname.tld dovecot: lmtp(5514): Fatal: master: service(lmtp): child 5514 killed with signal 11 (core dumps disabled) Aug 28 23:06:31 hostname.tld postfix/lmtp[5513]: 055F6345E: to=<email(a)mydomain.tld>, relay=hostname.tld[/opt/var/postfix/dovecot-lmtp], delay=0.09, delays=0.04/0/0.04/0, dsn=4.4.2, status=deferred (lost connection with hostname.tld[/opt/var/postfix/dovecot-lmtp] while sending end of data -- message may be sent more than once) Can someone help in fixing the issue… -Thanks in advance Vijay ######doveconf -n # 2.2.5: /opt/dovecot/2.2.5/etc/dovecot/dovecot.conf # OS: Linux 2.6.32-358.14.1.el6.x86_64 x86_64 CentOS release 6.4 (Final) ext4 auth_mechanisms = plain login digest-md5 cram-md5 auth_socket_path = /opt/var/dovecot/run/auth-userdb base_dir = /opt/var/dovecot/run/ debug_log_path = /var/log/dovecot-debug.log hostname = mail1(a)rvijay.me mail_debug = yes mail_location = maildir:/opt/mailbox/%d/%n/Maildir mail_plugin_dir = /opt/dovecot/2.2.5/lib/dovecot/ mail_plugins = " virtual quota antispam zlib" managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Spam { auto = subscribe } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / type = private } passdb { args = /opt/dovecot/2.2.5/etc/dovecot/conf.d/dovecot-sql.conf.ext driver = sql } plugin { antispam_allow_append_to_spam = no antispam_backend = mailtrain antispam_mail_notspam = --ham antispam_mail_sendmail = /opt/dovecot/2.2.5/bin/sa-learn-pipe.sh antispam_mail_sendmail_args = -u vmail antispam_mail_spam = --spam antispam_mail_tmpdir = /tmp antispam_spam = Spam antispam_trash = Trash mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size quota = maildir:User quota quota_grace = 10%% quota_rule = *:storage=1GB quota_rule2 = Trash:storage=+10%% quota_rule3 = Spam:storage=+20%% quota_status_nouser = DUNNO quota_status_overquota = 450 4.2.2 Mailbox is full. Try again later quota_status_success = DUNNO quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=80%% quota-warning 80 %u quota_warning3 = -storage=100%% quota-warning below %u sieve = ~/.dovecot.sieve sieve_before = /opt/var/dovecot/sieve/ sieve_dir = ~/sieve sieve_global_dir = /opt/var/dovecot/sieve zlib_save = bz2 zlib_save_level = 9 } protocols = imap lmtp sieve service auth { unix_listener /opt/var/postfix/dovecot-auth { group = postfix mode = 0660 user = postfix } } service imap-login { inet_listener imap { port = 143 } } service lmtp { unix_listener /opt/var/postfix/dovecot-lmtp { group = postfix mode = 0660 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } service_count = 10 vsz_limit = 64 M } service managesieve { process_limit = 1024 } service quota-status { client_limit = 1 executable = quota-status -p postfix inet_listener { port = 12340 } } service quota-warning { executable = script /opt/dovecot/2.2.5/etc/dovecot/conf.d/quota-warning.sh user = vmail } shutdown_clients = no ssl_ca = </opt/dovecot/2.2.5/etc/dovecot/ssl/mayca.crt.pem ssl_cert = </opt/dovecot/2.2.5/etc/dovecot/ssl/cert.pem ssl_key = </opt/dovecot/2.2.5/etc/dovecot/ssl/key.key ssl_parameters_regenerate = 30 hours submission_host = 127.0.0.1:587 userdb { driver = prefetch } userdb { args = /opt/dovecot/2.2.5/etc/dovecot/conf.d/dovecot-sql.conf.ext driver = sql } protocol lda { mail_plugins = " virtual quota antispam zlib sieve zlib" } protocol imap { mail_plugins = " virtual quota antispam zlib imap_quota imap_zlib" } protocol lmtp { debug_log_path = /var/log/dovecot-lmtp-debg.log mail_plugins = " virtual quota antispam zlib sieve zlib" }

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[Dovecot] Enforcing server cipher list order
by Phillip Odam 29 Aug '13

29 Aug '13

I noticed a similar/same discussion back on Aug 14th titled force ciphers order for clients. However from that thread I can't find quite what I'm after. From my testing of dovecot 2.1.6, by default it appears to honor the clients cipher list order for SSL/TLS connections. I can't find any documentation on dovecot providing a setting like Apache HTTPDs to either honor the client or server cipher list i.e. SSLHonorCipherOrder. Do newer versions (> 2.1.6) of dovecot either make this configurable or force honoring of the servers cipher list order? Or is the cipher selection a function that openssl performs? The version of openssl in use is 1.0.1e-fips. Thanks Phillip

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Re: [Dovecot] Log successful login plain text password
by Joseph Tam 29 Aug '13

29 Aug '13

Marco Fretz writes: > Maybe you can find a way in this direction > > http://wiki2.dovecot.org/HowTo/ConvertPasswordSchemes I've sync'd a separate password system by process tracing dovecot's auth process and dumping out the arguments of read() calls for some fixed set of descriptors and piping it into password synching script. A bit of a hack, but it works without having to touch dovecot. Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] Bug in dovecot 2.2.5: segfault due to bad alignment
by Andreas F. Borchert 29 Aug '13

29 Aug '13

Take a look at the sources, hmac.h declares struct hmac_context: struct hmac_context { char ctx[HMAC_MAX_CONTEXT_SIZE]; char ctxo[HMAC_MAX_CONTEXT_SIZE]; const struct hash_method *hash; }; If compiled for a 32 bit virtual address space, this has an alignment requirement of 4 due to the hash pointer. In line 171 of auth-token.c, we have following declaration of ctx as a local variable in auth_token_get(): struct hmac_context ctx; This is put on an address with an alignment requirement of 4. In lines 174 and 175 hmac_init is invoked with hash_method_sha1: hmac_init(&ctx, (const unsigned char*)username, strlen(username), &hash_method_sha1); In hmac.c, lines 43 and following, ctx->ctx with an alignment of 4 is passed to meth->init and meth->loop where meth refers to hash_method_sha1: meth->init(ctx->ctx); meth->loop(ctx->ctx, k_ipad, 64); These functions refer now to sha1_init and sha1_loop where the first parameter is expected to be a pointer to struct sha1_ctxt, a data structure which is declared in sha1.h: struct sha1_ctxt { union { uint8_t b8[20]; uint32_t b32[5]; } h; union { uint8_t b8[8]; uint64_t b64[1]; } c; union { uint8_t b8[64]; uint32_t b32[16]; } m; uint8_t count; }; Here we have with b64 one uint64_t which has on a SPARC platform an alignment requirement of 8. In consequence, struct sha1_ctxt has an alignment requirement of 8. With the invocations of meth->init and meth->loop above we pass a pointer to a data structure of alignment 4 to a function expecting a pointer to a data structure of alignment 8. Chances are that the alignment requirement is not met, causing a segmentation violation. This must be solved by declaring struct hmac_context such that is not just big enough but respects also the highest alignment required for one of the hashing data structures. There are several options to do this: * Beginning with C11, you are free to use an alignment specifier, i.e. add _Alignas ( uint64_t ) (see section 6.7.5 in ISO 9899-2011) * GCC supports alignment attributes, i.e. add __attribute__ ((aligned (8))) or whatever is required instead of 8, see http://gcc.gnu.org/onlinedocs/gcc/Variable-Attributes.html * Do not use a local variable for it, allocate the data structure using malloc instead. If you want to see a live crash, here is the relevant output of gdb that debugs ${prefix}/libexec/dovecot/auth. Program received signal SIGSEGV, Segmentation fault. sha1_loop (ctxt=0xffbff63c, input=0xffbff548, len=64) at sha1.c:224 224 sha1.c: No such file or directory. (gdb) where #0 sha1_loop (ctxt=0xffbff63c, input=0xffbff548, len=64) at sha1.c:224 #1 0xff2e218c in hmac_init (ctx=ctx@entry=0xffbff63c, key=key@entry=0x6a698 "borchert", key_len=8, meth=0x555d0 <hash_method_sha1>) at hmac.c:44 #2 0x00023310 in auth_token_get (service=service@entry=0x6a648 "imap", session_pid=0x56071 "26272", username=0x6a698 "borchert", session_id=0x6a650 "AErv6nbk6gB/AAAB") at auth-token.c:174 #3 0x00021708 in userdb_callback (result=USERDB_RESULT_OK, request=0x6a530) at auth-request-handler.c:668 #4 0x0001f144 in auth_request_userdb_callback (result=<optimized out>, result@entry=USERDB_RESULT_OK, request=request@entry=0x6a530) at auth-request.c:1039 #5 0x000312c8 in prefetch_lookup (auth_request=0x6a530, callback=0x1f058 <auth_request_userdb_callback>) at userdb-prefetch.c:40 #6 0x0001f37c in auth_request_lookup_user (request=0x6a530, callback=callback@entry=0x2150c <userdb_callback>) at auth-request.c:1072 #7 0x00022034 in auth_request_handler_master_request ( handler=<optimized out>, master=master@entry=0x6b120, id=1292369921, client_id=1, params=0x55bfc) at auth-request-handler.c:758 #8 0x0001be98 in master_input_request (args=<optimized out>, conn=0x6b120) at auth-master-connection.c:127 #9 auth_master_input_line (line=<optimized out>, conn=0x6b120) at auth-master-connection.c:598 #10 master_input (conn=0x6b120) at auth-master-connection.c:653 #11 0xff2ecca4 in io_loop_call_io (io=io@entry=0x6b398) at ioloop.c:387 #12 0xff2ed604 in io_loop_handler_run (ioloop=ioloop@entry=0x5e5e8) at ioloop-poll.c:211 #13 0xff2ec7a8 in io_loop_run (ioloop=0x5e5e8) at ioloop.c:406 #14 0xff29ad7c in master_service_run (service=0x5e128, callback=0x27b40 <client_connected>) at master-service.c:566 #15 0x0001852c in main (argc=1, argv=0xffbffd54) at main.c:393 (gdb) print ctxt $1 = (struct sha1_ctxt *) 0xffbff63c As you can see, ctxt is on a 4-byte boundary, not on an 8-byte boundary. The crash happens at sha1.c:224 where the 8-byte-alignment is indeed mandatory on a SPARC architecture: ctxt->c.b64[0] += copysiz * 8; The environment is Solaris 10 on SPARCv9. The sources have been compiled using gcc 4.8.0 for 32 bit. Andreas.

2 1

[Dovecot] Dovecot proxy to Microsoft Exchange 2013
by Ricardo Machini Barbosa 29 Aug '13

29 Aug '13

Hello, I am trying to do a proxy with dovecot to IMAP backend server that are using Microsoft Exchange 2013. I already did this with Microsoft Exchange 2007 and Microsoft Exchange 2010 and it works perfectly! But with Microsoft Exchange 2013 I can not perform LOGIN. The error log message is: /imap-login: Error: proxy(user(a)domain.com.br): Login for exchange2013.domain.com.br:143 timed out in state=4 (after 30 secs, local=x.x.x.x:59640)/ My troubleshoot was: - tcpdump on dovecot server side: I can see the commands sent/received by Microsoft Exchange. But no the "OK LOGIN" response. /* OK The Microsoft Exchange IMAP4 service in xxxx is ready.// //C CAPABILITY// //L LOGIN "user(a)domain.com.br" "123456"// //* CAPABILITY IMAP4 IMAP4rev1 AUTH=PLAIN STARTTLS UIDPLUS CHILDREN IDLE NAMESPACE LITERAL+// //C OK CAPABILITY completed./ - tcpdump with telnet login on dovecot server side: Works fine. /* OK The Microsoft Exchange IMAP4 service in xxxx is ready.// //a login "user(a)domain.com.br" "123456"// //a OK LOGIN completed.// //a logout// //* BYE Microsoft Exchange Server 2013 IMAP4 server signing off.// //a OK LOGOUT completed./ - Log verbose on Microsoft Exchange 2013. Look like that Microsoft Exchange did not receive the login command. Someone already tried do this with Microsoft Exchange 2013 ? See bellow some information about my dovecot configuration: /# 2.2.2: dovecot.conf// //# OS: Linux 2.6.32-358.2.1.el6.centos.plus.x86_64 x86_64 CentOS release 6.4 (Final)// // //base_dir = /var/run/dovecot/// //disable_plaintext_auth = no// //listen = x.x.x.x// //mbox_write_locks = fcntl// //passdb {// // args = /etc/dovecot/dovecot-ldap.conf.ext// // driver = ldap// //}// // //protocols = imap pop3// //service imap-login {// // inet_listener imap {// // port = 143// // }// // inet_listener imaps {// // port = 993// // ssl = yes// // }// // process_min_avail = 4// // service_count = 0// // vsz_limit = 512 M// //}// //service pop3-login {// // inet_listener pop3 {// // port = 110// // }// // inet_listener pop3s {// // port = 995// // ssl = yes// // }// // process_min_avail = 4// // service_count = 0// // vsz_limit = 512 M// //}// //ssl_cert = </etc/dovecot/certificate/chained.crt// //ssl_key = </etc/dovecot/certificate/cert.key// //userdb {// // driver = prefetch// //}// // ///etc/dovecot/dovecot-ldap.conf.ext// //hosts = x.x.x.x// //dn = cn=admin,o=email// //dnpass = xxxxxxx// //ldap_version = 3// //base = o=email// //scope=subtree// //pass_filter = mail=%u// //pass_attrs = uid=user,=password=,=proxy=y,mailHost=host,=nopassword=y/ Thanks, Ricardo Machini

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[Dovecot] Disable PAM username change?
by George 28 Aug '13

28 Aug '13

Hi! I have a problem involving Samba4, exim4, fetchmail, Dovecot and PAM... I am using Dovecot 2.1.7 on Debian Wheezy. I have setup a "maildrop" machine, which fetches mail from an external POP3 server for multiple accounts using fetchmail, delivers to local users mailboxes through exim4 and then serves them on the intranet via IMAP with Dovecot. This works great with local unix users, but I am having some trouble to configure it to work with Samba4 AD users (Samba 4.0.9 running as a DC on the same machine). Basically, I have configured PAM with winbind and it works fine (AD users can SSH the machine for example). Dovecot also authenticates properly via PAM, but the problem is that the username gets changed in the process (PAM returrns the "username" as "DOMAIN\username"): Aug 21 22:50:22 dc2 dovecot: auth-worker(5179): Debug: auth(foo,127.0.0.1): username changed foo -> DOMAIN\foo Aug 21 22:50:22 dc2 dovecot: auth: Debug: auth(foo,127.0.0.1,<0bBfg3/kpQB/AAAB>): username changed foo -> DOMAIN\foo Aug 21 22:50:22 dc2 dovecot: auth: Debug: client out: OK#0111#011user=DOMAIN\foo So the actual problem is that exim4 is delivering the mail to, for example, "/var/mail/foo" but Dovecot is looking for the mailbox on "/var/mail/DOMAIN\foo", even if the username given in the IMAP session is just "foo". The wiki mentions<http://wiki2.dovecot.org/PasswordDatabase/PAM>that "a PAM module can change the username". Can this be avoided? I need either: * Exim to deliver the mail to the user mailbox, *including* the domain part (out of scope of this list, but information is welcome), or * Dovecot to fetch the mail *not* using the domain part as part of the username variable. As a quick and dirty workaround, I hardcoded the domain part in the exim delivery path (something like "/var/mail/DOMAIN\\$local_part"), but this is far from optimal since I cannot use both unix users and AD users, I cannot use dovecot_delivery LDA transport, etc. As a bottom line, I also posted this to the Samba list because I believe this could also be solved if winbind just always returned the username without the domain when queried (conf option not working, probable bug) Ideas are welcome!! Best regards, Jorge

1 1

[Dovecot] Install of Dovecot 2.2.5 on Solaris 10/Openssl version 0.9.7d 17 Mar 2004
by Haney, Donald 28 Aug '13

28 Aug '13

Greetings! I am attempting to install Dovecot 2.2.5 on Solaris 10 Sparc hardware with openssl version 0.9.7d 17 Mar 2004. I have created a dovecot user and a dove null user, assigned them their own login directories specifying the ksh shell and assigned them to their own groups. I have run the configure command successfully and am having trouble with the make. At first, I received the problem listed below: /bin/bash ../../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I../.. -I../../src/lib -I../../src/lib-test -DMODULE_DIR=\""/usr/local/lib/dovecot"\" -std=gnu99 -g -O2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -fno-builtin-strftime -I/usr/sfw/include -MT iostream-openssl-context.lo -MD -MP -MF .deps/iostream-openssl-context.Tpo -c -o iostream-openssl-context.lo iostream-openssl-context.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I../.. -I../../src/lib -I../../src/lib-test -DMODULE_DIR=\"/usr/local/lib/dovecot\" -std=gnu99 -g -O2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -fno-builtin-strftime -I/usr/sfw/include -MT iostream-openssl-context.lo -MD -MP -MF .deps/iostream-openssl-context.Tpo -c iostream-openssl-context.c -fPIC -DPIC -o .libs/iostream-openssl-context.o iostream-openssl-context.c: In function `ssl_proxy_ctx_set_crypto_params': iostream-openssl-context.c:451: error: `SSL_OP_SINGLE_ECDH_USE' undeclared (first use in this function) iostream-openssl-context.c:451: error: (Each undeclared identifier is reported only once iostream-openssl-context.c:451: error: for each function it appears in.) I followed directions found in http://hg.dovecot.org/dovecot-2.2/rev/27ebd9552471 to resolve this problem (I believe). I am now seeing the following error: test-http-server.c: In function `main': test-http-server.c:122: error: size of array `type name' is negative *** Error code 1 make: Fatal error: Command failed for target `test-http-server.o' Current working directory /export/home/hanedo00/dovecot-2.2.5/src/lib-http *** Error code 1 The following command caused the error: fail= failcom='exit 1'; \ for f in x $MAKEFLAGS; do \ case $f in \ *=* | --[!k]*);; \ *k*) failcom='fail=yes';; \ esac; \ done; \ dot_seen=no; \ I have not had any luck thus far finding the solution for this error against test-http-server.o. Any assistance would be appreciated. Thanks, Don Haney This message and any attachments are solely for the use of intended recipients. The information contained herein may include trade secrets, protected health or personal information, privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you are not an intended recipient, you are hereby notified that you received this email in error, and that any review, dissemination, distribution or copying of this email and any attachment is strictly prohibited. If you have received this email in error, please contact the sender and delete the message and any attachment from your system. Thank you for your cooperation

2 1

[Dovecot] Trouble with case-sensitive LDAP user logins
by Jason Discount 28 Aug '13

28 Aug '13

Hi All, I have a client running Dovecot-Postfix on Debian Squeeze. I'm using Dovecot from the Squeeze repository. # dovecot --version 1.2.15 I've implemented a central mail_location and am using one vmail user, as I thought this would be be the best approach for when it came time to implement Shared and Public Mailboxes. # dovecot -n # 1.2.15: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-xen-686 i686 Debian 6.0.7 ext3 log_timestamp: %Y-%m-%d %H:%M:%S protocols: imap imaps pop3s managesieve listen(default): 127.0.0.1:143 listen(imap): 127.0.0.1:143 listen(pop3): 127.0.0.1:110 listen(managesieve): * ssl_listen(default): *:993 ssl_listen(imap): *:993 ssl_listen(pop3): *:995 ssl_listen(managesieve): ssl_ca_file: /etc/ssl/certs/RapidSSL_CA_bundle.pem ssl_cert_file: /etc/ssl/certs/mail.example.com.2013.chain.pem ssl_key_file: /etc/ssl/private/example.2013.key login_dir: /var/run/dovecot/login login_executable(default): /usr/lib/dovecot/imap-login login_executable(imap): /usr/lib/dovecot/imap-login login_executable(pop3): /usr/lib/dovecot/pop3-login login_executable(managesieve): /usr/lib/dovecot/managesieve-login mail_max_userip_connections(default): 40 mail_max_userip_connections(imap): 40 mail_max_userip_connections(pop3): 10 mail_max_userip_connections(managesieve): 10 mail_privileged_group: mail mail_uid: vmail mail_gid: vmail mail_location: maildir:/var/spool/dovecot/%d/%u mbox_write_locks: fcntl dotlock mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(pop3): /usr/lib/dovecot/pop3 mail_executable(managesieve): /usr/lib/dovecot/managesieve mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): mail_plugins(managesieve): mail_plugin_dir(default): /usr/lib/dovecot/modules/imap mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3 mail_plugin_dir(managesieve): /usr/lib/dovecot/modules/managesieve namespace: type: private separator: / inbox: yes list: yes subscriptions: yes lda: postmaster_address: postmaster(a)example.com mail_plugins: sieve quota log_path: /var/log/dovecot-deliver.log info_log_path: /var/log/dovecot-deliver.log auth default: mechanisms: plain login passdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf userdb: driver: ldap args: /etc/dovecot/dovecot-ldap-userdb.conf socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix master: path: /var/run/dovecot/auth-master mode: 384 user: vmail group: vmail plugin: quota: maildir:User quota_rule: *:storage=1200M quota_rule2: Deleted Messages:storage=10%% quota_rule3: Deleted Items:storage=10%% quota_rule4: Trash:storage=10%% sieve: /var/spool/sieve/%d/%u/.dovecot.sieve sieve_dir: /var/spool/sieve/%d/%u All of the mail users are LDAP users only (not local UNIX users - not using nsswitch). dovecot-ldap-userdb.conf is a symbolic link to dovecot-ldap.conf # grep -v '^ *$#.*$\?$' /etc/dovecot/dovecot-ldap.conf uris = ldaps://mail.example.com/ dn = uid=mail,ou=Services,dc=example,dc=com dnpass = ****************** tls_require_cert = hard auth_bind = yes base = ou=People,dc=example,dc=com user_attrs = quota=quota_rule=*:storage=%$M user_filter = (&(objectClass=posixAccount)(mail=%u)) pass_attrs = uid=mail,userPassword=password pass_filter = (&(objectClass=posixAccount)(mail=%u)) Now, mail addressed to user(a)example.com and user(a)EXAMPLE.com correctly gets delivered to the correct mail location of /var/spool/dovecot/example.com/user, but the problem occurs when the user creates their account with uppercase characters in their username, e.g. user(a)exaMPLE.com. This creates a new directory at /var/spool/dovecot/exaMPLE.com/user, which ever receives any mail. Is it possible to ignore the case the user enters in their mail client and always land them at the lowercase mail directory? Where would this be done? Thank you, Jay

1 0

[Dovecot] How do I get CRAM-MD5 to work?
by LuKreme 28 Aug '13

28 Aug '13

I know how to ENABLE CRAM-MD5, but getting it to actually work? <http://wiki2.dovecot.org/HowTo/CRAM-MD5> It looks like I have to 1) manually create a CRAM-MD5 data file and, I suppose, 2) manually manage the file? Given I do not know user's passwords, this might be tricky. Currently I have users authenticate against MySQL (virtual users) or pam (local users). Or do i just ignore it all and stick with PLAIN since the connection is already encrypted? What is LOGIN? My MUA supports "Password" (which is PLAIN evidently), kerberos 5, MD5 Challenge-response (CRAM-MD5), and NTML (??) -- If you have any young friends who aspire to become writers, the second-greatest favor you can do them is to present them with copies of The Elements of Style. The first-greatest, of course, is to shoot them now, while they're happy. -Dorothy Parker

1 0

[Dovecot] Migrating from Maildir to Maildir:LAYOUT=fs
by Rainer M Krug 27 Aug '13

27 Aug '13

Hi I have use dovecot together with offlineimap to download my gmail account on a single user computer and I have only one maildir (~/Maildir). As I switched to Mac, I would like to use spotlight to index my mails, which apparently does not work as they are in hidden directories (.directories). So I would like to change to LAYOUT=fs. Is there an easy way to migrate my email structure? I have several folders and subfolders, but a manual solution would be fine with me as well. My questions: 1) can I simply restructure the mailboxes and rename the folders / move them into the folders where I want them after changing the configuration of dovecot? 2) Is there an easy tool I can use for this for one mailbox which is doing it automatically? Thanks, Rainer -- Rainer M. Krug email: RMKrug<at>gmail<dot>com

3 4

[Dovecot] Developer docs?
by C. Mills 27 Aug '13

27 Aug '13

Hi, I'm looking to modify Dovecot slightly to add support for a custom feature. I've spent some time reading the code, and I've been wondering if there are any contributor/developer documents I've missed that would make getting up to speed easier. I've read much of the code, and most of the wiki, including the Design/* and /*Process pages. They give a good summary of some of the design decisions, but I don't see much other than that. The docs included in the tarball are just dumps of the wiki pages. I've browsed some of the list archives as well, without finding much to help me. Are there other resources I've missed? What I'm trying to do requires passing some additional information/state from the imap-login process (presumably through the master) to the imap mail process. Any pointers much appreciated! Thanks, C. -- ----------------------------------------------------------------------- C. Mills -----------------------------------------------------------------------

2 4

[Dovecot] Dovecot tuning for GFS2
by Andrea gabellini - SC 26 Aug '13

26 Aug '13

Hello, I'm deploing a new email cluster using Dovecot over GFS2. Actually I'm using courier over GFS. Actually I'm testing Dovecot with these parameters: mmap_disable = yes mail_fsync = always mail_nfs_storage = yes mail_nfs_index = yes lock_method = fcntl Are they correct? RedHat GFS support mmap, so is it better to enable it or leave it disabled? The documentation suggest the use of flock. What about it? Thanks, Andrea -- ---------------------------------------------------------------- Don't talk with a full mouth ... or with an empty head ---------------------------------------------------------------- Ing. *Andrea Gabellini* Email: andrea.gabellini(a)telecomitalia.sm <mailto:Andrea%20Gabellini%20%3Candrea.gabellini@telecomitalia.sm%3E> Skype: andreagabellini Tel: (+378) 0549 886111 Fax: (+378) 0549 886188 Telecom Italia San Marino S.p.A. Strada degli Angariari, 3 47891 Rovereta Republic of San Marino http://www.telecomitalia.sm

9 23

[Dovecot] zlib plugin issues
by Vijay Rajah 26 Aug '13

26 Aug '13

Hello, I'm running dovecot 2.2.5 in Centos 6.4 on EXT4 fs. I have activated zlib plugin. The incoming mails is compressed. However, when i try to retrieve the mail using imap I'm getting this error Aug 25 22:17:31 vrajah-vps5 dovecot: imap(me@<mydomain.tld>): Error: Cached message size smaller than expected (1464 < 2452) Aug 25 22:17:31 vrajah-vps5 dovecot: imap(me@<mydomain.tld>): Error: Maildir filename has wrong S value, renamed the file from /mail/mailbox/ rvijay.me/me/Maildir/.vijay_gmail/cur/1377448276.M960004P32378.vrajah-vps5,S=1464:2, to /mail/mailbox/<mydomain.tld>/me/Maildir/.vijay_gmail/cur/1377448276.M960004P32378.vrajah-vps5,S=1464:2, Aug 25 22:17:31 vrajah-vps5 dovecot: imap(me@<mydomain.tld>): Error: Corrupted index cache file /mail/mailbox/<mydomain.tld>/me/Mai ldir/.vijay_gmail/dovecot.index.cache: Broken physical size for mail UID 12 $ file /mail/mailbox/<mydomain.tld>/me/Maildir/.vijay_gmail/cur/1377448276.M960004P32378.vrajah-vps5\,S\=1464\:2\,S /mail/mailbox/<mydomain.tld>/me/Maildir/.vijay_gmail/cur/1377448276.M960004P32378.vrajah-vps5,S=1464:2,S: bzip2 compressed data, block size = 900k Am I missing anything? any ideas is much appreciated. Thanks Vijay ###################doveconf -n ############################ Here is my doveconf -n # 2.2.5: /mail/dovecot/2.2.5/etc/dovecot/dovecot.conf # OS: Linux 2.6.32-358.14.1.el6.x86_64 x86_64 CentOS release 6.4 (Final) ext4 auth_mechanisms = plain login digest-md5 cram-md5 auth_socket_path = /mail/var/dovecot/run/auth-userdb base_dir = /mail/var/dovecot/run/ debug_log_path = /var/log/dovecot-debug.log hostname = mail1(a)rvijay.me mail_location = maildir:/mail/mailbox/%d/%n/Maildir mail_plugin_dir = /mail/dovecot/2.2.5/lib/dovecot/ mail_plugins = " virtual quota zlib" managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / type = private } passdb { args = /mail/dovecot/2.2.5/etc/dovecot/conf.d/dovecot-sql.conf.ext driver = sql } plugin { mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size quota = maildir:User quota quota_grace = 10%% quota_rule = *:storage=1GB quota_rule2 = Trash:storage=+10%% quota_rule3 = Spam:storage=+20%% quota_status_nouser = DUNNO quota_status_overquota = 450 4.2.2 Mailbox is full. Try again later quota_status_success = DUNNO quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=80%% quota-warning 80 %u quota_warning3 = -storage=100%% quota-warning below %u sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_global_dir = /mail/var/dovecot/sieve zlib_save = bz2 zlib_save_level = 9 } protocols = imap lmtp sieve service auth { unix_listener /mail/var/postfix/dovecot-auth { group = postfix mode = 0660 user = postfix } } service imap-login { inet_listener imap { port = 143 } } service lmtp { unix_listener /mail/var/postfix/dovecot-lmtp { group = postfix mode = 0660 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } service_count = 10 vsz_limit = 64 M } service managesieve { process_limit = 1024 } service quota-status { client_limit = 1 executable = quota-status -p postfix inet_listener { port = 12340 } } service quota-warning { executable = script /mail/dovecot/2.2.5/etc/dovecot/conf.d/quota-warning.sh user = vmail } shutdown_clients = no ssl_ca = </mail/dovecot/2.2.5/etc/dovecot/ssl/mayca.crt.pem ssl_cert = </mail/dovecot/2.2.5/etc/dovecot/ssl/mail1.rvijay.me.pem ssl_key = </mail/dovecot/2.2.5/etc/dovecot/ssl/mail1.rvijay.me.key ssl_parameters_regenerate = 30 hours submission_host = 127.0.0.1:587 userdb { driver = prefetch } userdb { args = /mail/dovecot/2.2.5/etc/dovecot/conf.d/dovecot-sql.conf.ext driver = sql } protocol lda { mail_plugins = " virtual quota sieve zlib" } protocol imap { mail_plugins = " virtual quota imap_quota zlib" } protocol lmtp { mail_plugins = " virtual quota sieve zlib" }

1 1

[Dovecot] SMTP Proxy
by Leonardo Rodrigues 26 Aug '13

26 Aug '13

Hi, I have found a message on this mailing list dated August/2012 in which is said that dovecot could not (at least at that time) do SMTP Authentication using Proxy Features. http://www.dovecot.org/list/dovecot/2012-August/067998.html is this still true, given i'm using latest stable dovecot, v2.2.5 ? extra informations ... smtp authentication is done by postfix using: dovecot: service auth { unix_listener /var/spool/postfix/private/auth { mode = 0660 user = postfix group = postfix } } postfix: smtpd_sasl_type = dovecot smtpd_sasl_path = /var/spool/postfix/private/auth Thanks ! -- Atenciosamente / Sincerily, Leonardo Rodrigues Solutti Tecnologia http://www.solutti.com.br Minha armadilha de SPAM, NÃO mandem email gertrudes(a)solutti.com.br My SPAMTRAP, do not email it

2 4

[Dovecot] Nee assistance with migrating/copying a virtual user's maildir to another virtual user
by David Varela 26 Aug '13

26 Aug '13

Hello, I am trying to move/copy a virtual user's maildir to another virtual user but am running into problems with dsync and doveadm. I'm trying to move the maildir of a user who is no longer with the company to a manager's maildir. For doveadm I am using the command: doveadm move -u scavenaugh(a)lamontanita.coop jhenning(a)lamontanita.coop/INBOX/scavenaugh INBOX ALL The error is: doveadm(scavenaugh(a)lamontanita.coop): Error: user scavenaugh(a)lamontanita.coop: Auth USER lookup failed /var/log/dovecot.log shows: passdb doesn't support lookups, can't verify user's existence dovecot -n # 2.1.6: /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 8.2-RELEASE i386 ufs auth_cache_ttl = 14 mins auth_debug = yes auth_debug_passwords = yes auth_mechanisms = plain gssapi login auth_use_winbind = yes auth_verbose = yes auth_winbind_helper_path = /usr/local/bin/ntlm_auth first_valid_gid = 1001 first_valid_uid = 1001 info_log_path = /var/log/dovecot_info.log last_valid_gid = 1001 last_valid_uid = 1001 log_path = /var/log/dovecot.log mail_debug = yes mail_location = maildir:/usr/data/vmail/%u mail_max_userip_connections = 30 mail_privileged_group = mail passdb { args = /usr/local/etc/dovecot-ldap.conf driver = ldap } plugin { sieve = /usr/data/sieve-scripts/%u.sieve } protocols = imap pop3 service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-master { mode = 0600 } user = root } ssl_cert = </etc/ssl/dovecot/04JAN12cert.pem ssl_key = </etc/ssl//dovecot/04JAN12key.pem userdb { args = uid=vmail gid=vmail home=/usr/data/vmail/%u driver = static } valid_chroot_dirs = /usr/data/vmail verbose_proctitle = yes protocol imap { imap_client_workarounds = delay-newmail tb-extra-mailbox-sep } protocol pop3 { pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv } protocol lda { mail_plugins = sieve sendmail_path = /usr/sbin/sendmail } Your assistance is greatly appreciated. David Varela

2 5

[Dovecot] Dovecot auth error
by mehrdad nosrati 26 Aug '13

26 Aug '13

Greeting I'm newbie to Squirrelmail and just installed Dovecot in CentOS6.3. When I try to login to the Squirrelmail, then I get the following error: auth: Info: passwd(myusername(a)myserver.com): unknown user my config file is as follow: # /usr/bin/doveconf -n -c /etc/dovecot/dovecot.conf # 2.0.9: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-279.el6.x86_64 x86_64 CentOS release 6.3 (Final) auth_debug = yes auth_mechanisms = plain login auth_verbose = yes base_dir = /var/run/dovecot/ disable_plaintext_auth = no info_log_path = /var/log/dovecot-deliver.log log_path = /var/log/dovecot-deliver.log mail_debug = yes mail_location = maildir:~/MaIL mbox_write_locks = fcntl passdb { driver = passwd } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } } ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { driver = passwd } protocol pop3 { pop3_uidl_format = %08Xu%08Xv Any help would be appreciable. Thanks! Mehrdad.

2 1

[Dovecot] A question of imap timeout exit
by 刘莹莹 26 Aug '13

26 Aug '13

hello: I have a question on imap process: if a client connect to dovecot like foxmail(version 10) , dovecot will start at least 3 imap processes , and these imap processes will online until client logout , if the client not logout ,the imap process will always online. this is similar to the long connection and imap's auto logout timer is not effect in this case. now I have two questions: 1: if there are a large number of users online at the same time ( eg about 30 000 users): so dovecot should shart at least 30 000 * 3 imap processes, if user not logout ,so many processes are online all the time .this is terrible. I dot'n know if there is a solution ?? now I have changed the timeout = 2min and test ,dovecot active disconnected imap process ,but I don't think this is a appropriate option. 2: I want to know why auto logout timer duration of IMAP protocol must be not less than 30 minuters ?? My English is not vary good ,I'm sorry but I really want to know the answer . thanks

2 1

[Dovecot] Disabled pop3-login
by LuKreme 26 Aug '13

26 Aug '13

In my dovecot.conf I do not have pop3-login anabled (since I do not support pop3): # doveconf -n # 2.2.5: /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 9.1-RELEASE i386 auth_mechanisms = CRAM-MD5 DIGEST-MD5 APOP LOGIN PLAIN disable_plaintext_auth = no first_valid_uid = 89 log_path = /var/log/dovecot login_log_format_elements = user=<%u> %r %m %c mail_location = maildir:~/Maildir mail_max_userip_connections = 50 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox NotJunk { auto = subscribe } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } service auth { unix_listener /var/spool/postfix/private/auth { mode = 0666 } } service imap-login { inet_listener imaps { port = 993 ssl = yes } } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd } userdb { args = /etc/dovecot/dovecot-sql.conf.ext default_fields = uid=vpopmail gid=vchkpw mail_location=/usr/local/virtual/%u driver = sql } but I see thousands (tens of thousands) of dovecot:Aug 18 14:26:06 pop3-login: Info: Aborted login (auth failed, 1 attempts in 17 secs): user=<john>, method=PLAIN, rip=74.95.82.150, lip=75.148.117.93, session=<+VcroT7kUgBKX1KW> dovecot:Aug 18 14:26:10 pop3-login: Info: Aborted login (auth failed, 1 attempts in 17 secs): user=<john>, method=PLAIN, rip=74.95.82.150, lip=75.148.117.93, session=<kbNdoT7kWwBKX1KW> dovecot:Aug 18 14:26:13 pop3-login: Info: Aborted login (auth failed, 1 attempts in 17 secs): user=<john>, method=PLAIN, rip=74.95.82.150, lip=75.148.117.93, session=<rRWQoT7kWgBKX1KW> dovecot:Aug 18 14:26:15 pop3-login: Info: Aborted login (auth failed, 1 attempts in 17 secs): user=<john>, method=PLAIN, rip=74.95.82.150, lip=75.148.117.91, session=<feCpoT7kfwBKX1KW> dovecot:Aug 18 14:26:16 pop3-login: Info: Aborted login (auth failed, 1 attempts in 17 secs): user=<john>, method=PLAIN, rip=74.95.82.150, lip=75.148.117.93, session=<lmTCoT7kiQBKX1KW> dovecot:Aug 18 14:26:18 pop3-login: Info: Aborted login (auth failed, 1 attempts in 17 secs): user=<john>, method=PLAIN, rip=74.95.82.150, lip=75.148.117.91, session=<5oPcoT7ktABKX1KW> Yes, I need to install fail2ban or something on this new machine, but still... -- Mom: There was more than one lobster present at the birth of Jesus? Daughter: Duh.

6 9

[Dovecot] commented lines still active
by LuKreme 26 Aug '13

26 Aug '13

despite the manage sieve lines on dovecot.conf being currently commented out show as active in doveconf -n # cd /usr/local/etc/dovecot/ # grep -ir sieve . ./dovecot.conf:#managesieve_notify_capability = mailto ./dovecot.conf:#managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave ? -- 'You know me,' said Rincewind. 'Just when I'm getting a grip on something Fate comes along and jumps on my fingers.' --Interesting Times

3 2

[Dovecot] dovecot OK for intranet, not OK for external IPs
by Sulla 25 Aug '13

25 Aug '13

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Dear all! I'm stuck. I've got a dovecot IMAP server running (TLS, port 149) on Ubuntu 13.04 server behind a DSL router. The mailserver's IP is 10.0.0.1 When I connect to my mailbox from my intranet-PC (10.0.0.2), everything works as expected. Login OK, acces to all mailboxes is ok, everything. netstat -nt on my email server shows me: Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 10.0.0.1:143 10.0.0.2:57952 ESTABLISHED and /var/log/mail.log shows me: Aug 24 22:41:00 SERVERNAME dovecot: imap-login: Login: user=<UID>, method=PLAIN, rip=10.0.0.2, lip=10.0.0.1, mpid=24326, TLS, session=<3Ul+irfkYAAKAAAC> However, when I connect to my mailserver through the internet (from 10.196.124.7 which is a modem of my ISP), dovecot ignores the authentication request. It does nothing. Just nothing. My router forwards the connection request to my mailserver correctly, so port forwarding on the router is ok, as my mailserver gets a connection request from the client. Proof: "netstat -nt" shows me: Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 10.0.0.1:143 10.196.124.7:1024 SYN_RECV So, my server gets a connection request on port 143 from my client PC, but then nothing happens. By nothing I mean, that nothing gets written into /var/log/mail.log and my email client (Thunderbird) gets a connection timeout. Any ideas why dovecot is refusing connections? How can I solve this problem? thanx all Sulla -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEARECAAYFAlIZI7sACgkQR6b2EdogPFvqxACgrUACK1J8tHCxJR0jMUui14bs TsoAnAw4QnVr2kydjk2cErKW+i6oVu1f =86wg -----END PGP SIGNATURE-----

4 3

[Dovecot] Dovecot LDA
by LuKreme 24 Aug '13

24 Aug '13

OK, I did read <http://wiki2.dovecot.org/LDA> but it doesn't answer the question I have since it doesn't tell me what I can do with -o, exactly. What I would like to do is be able to call dovecot-lda and pass along '\\Seen', is that possible? -- Up the airy mountains, down the rushy glen... From ghosties and bogles and long-leggity beasties... My mother said I never should... We dare not go a-hunting for fear... And things that go bump... Play with the fairies in the wood... --Lords and Ladies

2 2

[Dovecot] expire plugin doesn't work?
by Anton Chigin 24 Aug '13

24 Aug '13

Hello, I've configured dovecot to use expire plugin: heres my dovecot -n: --------------------- # 2.1.7: /etc/dovecot/dovecot.conf # OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.1 ext4 auth_mechanisms = plain login dict { expire = mysql:/etc/dovecot/dovecot-dict-expire-sql.conf.ext } mail_location = maildir:/home/mail/vhosts/%d/%n mail_plugins = expire mail_privileged_group = vmail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave namespace inbox { inbox = yes location = mailbox Drafts { auto = no special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Spam { auto = subscribe special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { expire = Trash 7 expire_dict = proxy::expire sieve = ~/dovecot.sieve sieve_dir = ~/sieve sieve_max_actions = 32 sieve_max_redirects = 4 sieve_max_script_size = 1M sieve_quota_max_scripts = 32 } protocols = imap pop3 lmtp sieve service auth-worker { user = vmail } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { mode = 0600 user = vmail } user = dovecot } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 ssl = yes } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } service_count = 1 vsz_limit = 128 M } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 995 ssl = yes } } ssl = required ssl_ca = </etc/ssl/my_certs/sub.class1.server.ca.pem ssl_cert = </etc/ssl/private/chig.in/mail/mail.chig.in.crt ssl_key = </etc/ssl/private/chig.in/mail/mail.chig.in.key userdb { args = uid=vmail gid=vmail home=/home/mail/vhosts/%d/%n driver = static } protocol lmtp { mail_plugins = expire sieve } protocol sieve { mail_max_userip_connections = 10 managesieve_implementation_string = Cyrus timsieved v2.2.13 managesieve_logout_format = bytes=%i/%o managesieve_max_compile_errors = 5 } --------------------- What exactly I did.... 1) dovecot.conf dict { expire = mysql:/etc/dovecot/dovecot-dict-expire-sql.conf.ext } 2) /etc/dovecot/dovecot-dict-expire-sql.conf.ext connect = host=127.0.0.1 dbname=mailserver user=mail password=SOMEPASS map { pattern = shared/expire/$user/$mailbox table = expires value_field = expire_stamp fields { username = $user mailbox = $mailbox } } 3) conf.d/10-mail.conf mail_plugins = expire 4) conf.d/90-plugin.conf plugin { #setting_name = value expire = Trash 7 expire_dict = proxy::expire } 5) Created table in mysql server mysql> show create table expires; +---------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Table | Create Table | +---------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | expires | CREATE TABLE `expires` ( `username` varchar(75) NOT NULL, `mailbox` varchar(255) NOT NULL, `expire_stamp` int(11) NOT NULL, PRIMARY KEY (`username`,`mailbox`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 | +---------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ 1 row in set (0.00 sec) And nothing works dovecot debug shows nothing: only one string related to expire plugin Aug 24 04:21:37 piscola dovecot: lmtp(16927): Debug: Module loaded: /usr/lib/dovecot/modules/lib20_expire_plugin.so mysql general query log show nothing also... Can anyone help me please? Thanks a lot!

2 8

[Dovecot] SSL Cipher Order in Dovecot
by Marc Grooz 23 Aug '13

23 Aug '13

Hi, I want that dovecot uses PFS with my Apple Devices. I set the Cipher List to: ssl_cipher_list = DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!CBC:!PSK:!SRP:!DSS:!SSLv2:!RC4 I got this from here: http://www.kuketz-blog.de/perfect-forward-secrecy-mit-apple-mail/ But then my only Outlook 2010 Client won't connect. If i enable rsa-aes128-SHA again on third place all clients connect without dhe. Dosen't dovecot horner the Cipher Order in the config? Kind regards Marc

1 0

[Dovecot] piegonhole sieve prepending header lines with an extra space
by Anand Kumria 23 Aug '13

23 Aug '13

Hi, I've noticed that the redirect sieve extension is placing an extra space before the headers of email when the 'redirect' command is used. Unfortunately this break gmail, yahoo, and most other email programs. I am using pigeonhole 0.4.0-14 with Dovecot 2.2.4.3; I see change 1781:e439789e3211 but it appears to only change how the X-Sieve header is generated. I only have the one dovecot instance but I will note that the setting 'mail_save_crlf = yes' is specified. Thanks, Anand

2 9

[Dovecot] Dovecot Dsync
by Ben 23 Aug '13

23 Aug '13

Hi, Sorry to bump it, but I've yet to receive even one reply to my question the other day about Dsync ? Everyone else seems to have been receiving replies to their questions and so I'm feeling a little lonely out in the cold. I can't believe nobody on-list uses Dsync ? Ben

4 6

[Dovecot] Logging passwords on auth failure/dealing with botnets
by Michael Smith (DF) 23 Aug '13

23 Aug '13

Hi, Since upgrading our mail servers to Postfix/Dovecot, we've seen a rather large increase in botnet brute force password attacks. I guess our old servers were too slow to suit their needs. Now, when they hit upon a valid user, it's easy to see what passwords they are trying (we've enabled auth_debug_passwords and set auth_verbose_passwords = plain). We can easily have log monitors pick up the blatant password attempts (123, 1234, 12345, 3.1415926, etc) and firewall them. Aug 22 00:21:47 host1 dovecot: auth-worker(1423): sql(aea,120.198.9.221): Password mismatch (given password: 3.1415926) However, when they are plugging away on an invalid user, all the logs show is 'unknown user'. The only way to see what they are doing is to tcpdump on the box. Almost 99% of the attacks are through SMTP/SASL attempts, using 'auth login'. Postfix is configured to use Dovecot for the authentication backend. NOTE: parens contain the base64 decoded values, this is not part of the data stream. C: auth login S: 334 VXNlcm5hbWU6 (334 Username:) C: YWVi (aeb) S: 334 UGFzc3dvcmQ6 (334 Password:) C: My4xNDE1OTI2 (3.1415926) S: 535 5.7.8 Error: authentication failed: UGFzc3dvcmQ6 (535 5.7.8 Error: authentication failed: Password:) Aug 22 11:00:31 host3 dovecot: auth-worker(19844): sql(aeb,120.198.9.221): unknown user How difficult would it be to add logging the given password, observing the auth_debug_passwords and auth_verbose_passwords settings, for all authentication failures? When we see certain patterns, we want to aggressively block those IPs, regardless of if it's a valid username or an unknown user. Or another option, is there any good DNS based RBLs for botnet IPs, and is there any way to tie that in to the dovecot auth system? I've been looking for botnet rbls, but what I've found so far doesn't seem to work very well. Most of the IPs that I've had to firewall don't exist in them. -- Michael Smith

3 2

Re: [Dovecot] Load goes up imap-login
by megodin＠inboxalias.com 22 Aug '13

22 Aug '13

Hi there Giles, not really a solution to your problem, but a hint: Try activating "verbose_proctitle = yes" in your dovecot.conf, restart service dovecot and you might get more information (when the load is produced by logged in users) - it gives you verbose information about which specific user with which IP is generating the high load. All the best, Megodin --- Alle PostfÃ¤cher an einem Ort. Jetzt wechseln und E-Mail-Adresse mitnehmen! http://email.freenet.de/basic/Informationen _________________________________________________________________ Send and receive anonymous emails to your inbox with InboxAlias. http://www.inboxalias.com

2 1

Re: [Dovecot] Sieve filterset not activating in Dovecot 2.0.15 with, Sieve plug-in and Roundcube 0.5.3: "NO (TRYLATER) Internal Error." (Steffen Kaiser)
by Joe Lourenco 22 Aug '13

22 Aug '13

Thank you Steffen Kaiser. I enabled the auth_debug and saw this error for permissions: Aug 22 13:41:44 managesieve($u): Error: sieve-storage: Creating symlink() /home/$u/.dovecot.sieve to sieve/Out of office.sieve failed: Permission denied The user's home directory was owned by root. Can not explain it why it was so. Thanks again! > On Wed, 21 Aug 2013, Joe Lourenco wrote: > > > roundcube: S: NO (TRYLATER) "Internal error occured. Refer to server log > > for more information. [2013-08-21 19:01:13]" > > > Nothing is showing up on the server log. > > Check out Dovecot's error log and search for that timestamp of the > message, it is there - unless, say, an out of disk error prevented the > logging. >

1 0

[Dovecot] Problem compiling 2.2.5
by Luciano Mannucci 22 Aug '13

22 Aug '13

I'm trying to upgrade a very old sparcstation running Solaris 8 which is running dovecot 1.x for few users. All I have for the task is good old gcc 2.95.2. The poor sod complains because it can't compute the sizeof(unsigned char prefix_text[]) at line 13 of log-error-buffer.c. Can I help it by - say - putting a constant between the '[]'? Or is it unfair? :-) I don't think it's woth modifying the distribution only for us owning machines that should be in a museum by now... Thanks for the good software, BTW, luciano. -- /"\ /Via A. Salaino, 7 - 20144 Milano (Italy) \ / ASCII RIBBON CAMPAIGN / PHONE : +39 2 485781 FAX: +39 2 48578250 X AGAINST HTML MAIL / E-MAIL: posthamster(a)sublink.sublink.ORG / \ AND POSTINGS / WWW: http://www.lesassaie.IT/

4 7

[Dovecot] Load goes up imap-login
by Giles Coochey 22 Aug '13

22 Aug '13

Every so often recently I've seen the load on my heavily under-used dovecot server (1 mailbox) rise up to 1 A top shows imap-login to causing the issue. I have checked /var/log/secure, /var/log/maillog, /var/log/messages and cannot see anything unusual. Anybody else seen something like this? # 2.2.5: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-358.14.1.el6.x86_64 x86_64 CentOS release 6.4 (Final) listen = * mail_location = maildir:~/.Maildir managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave mbox_write_locks = fcntl namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/.sieve } protocols = imap service imap { process_limit = 2048 } ssl_cert = </etc/pki/dovecot/certs/imap.crt ssl_key = </etc/pki/dovecot/private/imap.key userdb { driver = passwd } protocol lmtp { mail_plugins = sieve $mail_plugins } protocol lda { mail_plugins = sieve } protocol imap { mail_max_userip_connections = 50 } -- Regards, Giles Coochey, CCNP, CCNA, CCNAS NetSecSpec Ltd +44 (0) 8444 780677 +44 (0) 7983 877438 http://www.coochey.net http://www.netsecspec.co.uk giles(a)coochey.net

1 0

[Dovecot] combining pop3 and imap accounts
by Patrick Shirkey 22 Aug '13

22 Aug '13

HI, I have a working exim4 + dovecot system that uses system user folders for the inbox. exim4: domains = dsearch;/etc/exim4/virtual dovecot: mail_location = mbox:~/mail:INBOX=/var/mail/%u - I would like to add additional virtual accounts using the method described in this post: http://www.debian-administration.org/articles/302 exim4: /etc/exim4/conf.d/router/360_exim4-local_vdom_aliases vdom_aliases_maildir: debug_print = "R: vdom_aliases_maildir for $local_part@$domain" driver = redirect allow_defer allow_fail domains = dsearch;/var/mail/virtual data = /var/mail/virtual/$domain/$local_part/ directory_transport = address_directory pipe_transport = address_pipe file_transport = address_file dovecot: mail_location = maildir:/var/mail/virtual/%d/%n/ auth_userdb = passwd-file /etc/passwd.imap - I have read about "Namespace" but I am not sure if they will work with virtual pop3 and virtual imap accounts. as I also want to keep the existing pop3 setup without have to modify the location of the inbox for existing accounts pop3 accounts. It seems that exim4 is fine with this method but I am not sure about dovecot. Is it possible to have pop3 and imap running while also using multiple delivery folder locations for the mail_location directive? -- Patrick Shirkey Boost Hardware Ltd

1 0

[Dovecot] Sieve filterset not activating in Dovecot 2.0.15 with Sieve plug-in and Roundcube 0.5.3: "NO (TRYLATER) Internal Error."
by Joe Lourenco 22 Aug '13

22 Aug '13

Hello Everyone, I am running Dovecot 2.0.15 with its Sieve plug-in, and Roundcube 0.5.3. I have a problem with just one particular user, who after creating a filters set and creating a filter in Roundcube, this user cannot activate the filters set. At first, this user could not create a filter at all. That was resolved by creating the "sieve" directory with the right permissions in his /home. Logs show the following when trying to activate the filters set via the Roundcube: roundcube: S: NO (TRYLATER) "Internal error occured. Refer to server log for more information. [2013-08-21 19:01:13]" Nothing is showing up on the server log. I have tried to activate the filter via the Sieve command line, authenticating the user, then running "SETACTIVE "roundcube"", but the error is the same, an internal server error. Again, I can successfully do this via the command line or Roundcube, from say, my userid. I appreciate any help. -- Joe Lourenco Systems Administrator C & C Technologies Cell: 55-21-8596-0078 Phone: 55-21-2499-9591

2 1

[Dovecot] dovecot2, antispam and sieve versions
by Terry Barnum 22 Aug '13

22 Aug '13

I'm currently running dovecot2 v2.2.5 with dovecot2-antispam 0.0-51 and dovecot2-sieve 0.4.1, all via macports. If one wanted to downgrade to dovecot v2.2.0, would these versions of antispam and sieve still be okay to use? The reason for the question is I'm trying to diagnose a mailserver problem where after 2-6 days the machine goes deaf. Absolutely nothing of interest in any logfile that I can see except for an imap-login process crash which got me thinking about a downgrade test. Thanks, -Terry Terry Barnum digital OutPost http://www.dop.com

1 0

[Dovecot] Dovecot antispam plugin for 2.2
by Micah Anderson 21 Aug '13

21 Aug '13

Hello, I recently was looking to update to dovecot 2.2 and I have been happily using the dovecot-antispam plugin in 2.1, but found that there have been some changes in dovecot that make this version not compile against 2.2. I'm wondering if Johannes you have any plans to update it, or if others have managed to figure out what is necessary to get it to work? The particular piece that I am currently stuck on is that the dict_init() in dovecot now requires more arguments than in previous versions, it now requires this: int dict_init(const char *uri, enum dict_data_type value_type, const char *username, const char *base_dir, struct dict **dict_r, const char **error_r); but previously, we only needed four arguments. Now we need to know what to supply for '**dict_r' and '**error_r'. Any advise/help would be appreciated: make[1]: Entering directory `/home/micah/debian/dovecot-antispam/dovecot-antispam-2.0+20120225' cc -DHAVE_CONFIG_H -I/usr/include/dovecot/ -I/usr/include/dovecot/src/ -I/usr/include/dovecot/src/lib/ -I/usr/include/dovecot/src/lib-storage/ -I/usr/include/dovecot/src/lib-mail/ -I/usr/include/dovecot/src/lib-imap/ -I/usr/include/dovecot/src/lib-dict/ -I/usr/include/dovecot/src/lib-index/ -I/usr/include/dovecot/src/imap/ -o dovecot-version dovecot-version.c ./dovecot-version > dovecot-version.h CC antispam-storage.o In file included from antispam-storage-2.2.c:20:0, from antispam-storage.c:3: antispam-plugin.h: In function ‘string_dict_init’: antispam-plugin.h:288:2: error: too few arguments to function ‘dict_init’ return dict_init(uri, DICT_DATA_TYPE_STRING, username, NULL); ^ In file included from antispam-plugin.h:13:0, from antispam-storage-2.2.c:20, from antispam-storage.c:3: /usr/include/dovecot/dict.h:34:5: note: declared here int dict_init(const char *uri, enum dict_data_type value_type, ^ micah

2 1

[Dovecot] Dsync confusion...
by Ben 21 Aug '13

21 Aug '13

Hi, Maybe I've been staring at config files and man pages too long, but the doc page for Dsync is a little confusing and I don't how to solve my problem. I've probably missed something simple and stupid, but as I said, I've been staring at this problem too long and need a second pair of eyes on it ! Per doveconf below the user/owner for auth db is a user with shell /bin/false. Root SSH login is also disabled on the target machine, so I need to use a script user to do the sync. I installed dovecot on the target host and config'd it as per the second doveconf below But all I ever get are errors such as : su -c "dsync -u test(a)somewhere.example.com backup its-virtmail(a)somewhere.example.com" its_scripts dsync(its_scripts): Fatal: setuid(1001(its-virtmail) from userdb lookup) failed with euid=1002(its_scripts): Operation not permitted (This binary should probably be called with process user set to 1001(its-virtmail) instead of 1002(its_scripts)) root@ukc-vm02-mx01:/etc/dovecot/conf.d# dsync(its_scripts): Error: userdb lookup: connect(/var/run/dovecot/auth-userdb) failed: Permission denied (euid=1002(its_scripts) egid=1002(its_scripts) missing +r perm: /var/run/dovecot/auth-userdb, dir owned by 0:0 mode=0755) Even if I temporarily give /bin/sh and an ssh key to the dovecot user, I still can't get it to work : ssh its-virtmail(a)somewhere.example.com dsync -u test(a)example.com dsync(its-virtmail): Error: user test(a)somewhere.example.com: Initialization failed: mail_location not set and autodetection failed: Mail storage autodetection failed with home=/srv/mail/example.com/test dsync(its-virtmail): Fatal: User init failed dsync-local(test(a)somewhere.example.com): Error: read() from worker server failed: EOF # SOURCE HOST # 2.0.19: /etc/dovecot/dovecot.conf # OS: Linux 3.5.0-37-generic x86_64 Ubuntu 12.04.2 LTS auth_verbose = yes auth_verbose_passwords = sha1 mail_location = maildir:~/Maildir managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave passdb { args = scheme=CRYPT username_format=%u /etc/dovecot/users driver = passwd-file } plugin { fts = solr fts_solr = url=http://localhost:8080/solr/ sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } protocols = imap lmtp sieve service auth { unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = its-virtmail mode = 0660 user = its-virtmail } } service imap-login { process_min_avail = 3 } service lmtp { process_min_avail = 5 unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } user = its-virtmail } service managesieve-login { inet_listener sieve { port = 4190 } inet_listener sieves { port = 5190 ssl = yes } process_min_avail = 3 } ssl = required ssl_cert = </etc/ssl/certs/mx_example.com.pem ssl_cipher_list = TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!3DES:!PSK:@STRENGTH ssl_key = </etc/ssl/private/mx_example.com.key userdb { args = username_format=%u /etc/dovecot/users driver = passwd-file } protocol imap { imap_client_workarounds = delay-newmail mail_max_userip_connections = 10 mail_plugins = fts fts_solr } protocol pop3 { mail_max_userip_connections = 10 pop3_client_workarounds = outlook-no-nuls oe-ns-eoh } protocol lda { deliver_log_format = msgid=%m: %$ mail_plugins = sieve postmaster_address = postmaster quota_full_tempfail = yes rejection_reason = Your message to <%t> was automatically rejected:%n%r } protocol lmtp { mail_plugins = sieve postmaster_address = postmaster(a)example.com } #DEST HOST # 2.0.19: /etc/dovecot/dovecot.conf # OS: Linux 3.5.0-37-generic x86_64 Ubuntu 12.04.2 LTS auth_verbose = yes auth_verbose_passwords = sha1 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave passdb { args = scheme=CRYPT username_format=%u /etc/dovecot/users driver = passwd-file } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } protocols = " imap lmtp sieve" service auth { unix_listener auth-userdb { group = its-virtmail user = its-virtmail } } service lmtp { process_min_avail = 3 user = its-virtmail } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { args = username_format=%u /etc/dovecot/users driver = passwd-file }

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[Dovecot] Question: dovecot-1.2.17 , pop3
by Kutrus Neloy 21 Aug '13

21 Aug '13

Hi, you have written in your Dovecot 2.2.5 - Changelog that you have solved a Problem with pop3. *· pop3: Avoid assert-crash if client disconnects during LIST.* My question is: Is it possible to get this problem with my version? 1.2.17 ? Thanks

4 4

[Dovecot] username and password can't be verified
by Eric Kom 21 Aug '13

21 Aug '13

Good day Folks, I am trying to setup a mail server based on dovecot(with imap and pop3) and postfix as a smtp on debian jessie/sid. The login its system user. After I have tried to configure the client (Icedove), this last can find the imap, pop3 and smtp servers; but the can't be verified. Please see below my dovecot, postfix configurations and log details. erickom@ajk:/etc/postfix$ doveconf -n # 2.2.5 (c4f754d6967e): /etc/dovecot/dovecot.conf # OS: Linux 3.10-2-486 i686 Debian jessie/sid ext4 auth_debug = yes auth_debug_passwords = yes auth_mechanisms = plain login base_dir = /var/run/dovecot/ disable_plaintext_auth = no login_greeting = Great Kom, ready. mail_debug = yes mail_location = maildir:/var/mail/%d/%n/Maildir managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } protocols = " imap sieve pop3" service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } } service pop3-login { inet_listener pop3 { port = 110 } inet_listener pop3s { port = 995 ssl = yes } } ssl_cert = </etc/dovecot/dovecot.pem ssl_key = </etc/dovecot/private/dovecot.pem userdb { driver = passwd } erickom@ajk:/etc/postfix$ sudo postconf -n [sudo] password for erickom: alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no broken_sasl_auth_clients = yes config_directory = /etc/postfix debug_peer_list = problem.domain home_mailbox = Maildir/ inet_interfaces = all inet_protocols = all mailbox_command = procmail -a "$EXTENSION" mailbox_size_limit = 0 mydestination = metropolitanbuntu.co.za, ajk.metropolitanbuntu.co.za, localhost.metropolitanbuntu.co.za, localhost, metropolitan.org.za myhostname = ajk.metropolitanbuntu.co.za mynetworks = 127.0.0.0/8 10.0.0.0/24 myorigin = /etc/mailname readme_directory = no recipient_delimiter = + smtp_tls_cert_file = /etc/ssl/certs/smtpd.crt smtp_tls_key_file = /etc/ssl/private/smtpd.hey smtp_tls_loglevel = 1 smtp_tls_note_starttls_offer = yes smtp_tls_security_level = may smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_banner = Great Kom Networks (Pty) LTD, Ready. smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_local_domain = $myhostname smtpd_sasl_path = private/auth smtpd_sasl_security_options = noanonymous smtpd_sasl_type = dovecot smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key smtpd_tls_received_header = yes smtpd_tls_security_level = may smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_use_tls = yes Aug 20 09:02:36 ajk postfix/smtpd[16966]: connect from unknown[10.0.0.103] Aug 20 09:02:36 ajk postfix/smtpd[16966]: improper command pipelining after EHLO from unknown[10.0.0.103]: QUIT\r\n Aug 20 09:02:36 ajk postfix/smtpd[16966]: disconnect from unknown[10.0.0.103] Aug 20 09:02:36 ajk dovecot: auth: Debug: auth client connected (pid=17032) Aug 20 09:02:36 ajk dovecot: imap-login: Aborted login (no auth attempts in 0 secs): user=<>, rip=10.0.0.103, lip=10.0.0.244, session=<xjZOpFvkSAAKAABn> Aug 20 09:02:57 ajk postfix/smtpd[16966]: connect from unknown[10.0.0.103] Aug 20 09:02:57 ajk postfix/smtpd[16966]: improper command pipelining after EHLO from unknown[10.0.0.103]: QUIT\r\n Aug 20 09:02:57 ajk postfix/smtpd[16966]: disconnect from unknown[10.0.0.103] Aug 20 09:02:57 ajk dovecot: auth: Debug: auth client connected (pid=17037) Aug 20 09:02:57 ajk dovecot: imap-login: Aborted login (no auth attempts in 0 secs): user=<>, rip=10.0.0.103, lip=10.0.0.244, session=<Vz6IpVvkSgAKAABn> Aug 20 09:03:03 ajk dovecot: auth: Debug: auth client connected (pid=17040) Aug 20 09:03:03 ajk dovecot: auth: Debug: client in: AUTH#0111#011PLAIN#011service=imap#011session=okfspVvkTAAKAABn#011lip=10.0.0.244#011rip=10.0.0.103#011lport=143#011rport=57164 Aug 20 09:03:03 ajk dovecot: auth: Debug: client passdb out: CONT#0111#011 Aug 20 09:03:03 ajk dovecot: auth: Debug: client in: CONT#0111#011AGVyaWNrb21AbWV0cm9wb2xpdGFuLm9yZy56YQBuaW5hMDEwMTgzYw== (previous base64 data may contain sensitive data) Aug 20 09:03:03 ajk dovecot: auth-worker(17041): Debug: Loading modules from directory: /usr/lib/dovecot/modules/auth Aug 20 09:03:03 ajk dovecot: auth-worker(17041): Debug: Module loaded: /usr/lib/dovecot/modules/auth/libdriver_mysql.so Aug 20 09:03:03 ajk dovecot: auth-worker(17041): Debug: pam(erickom(a)metropolitan.org.za,10.0.0.103): lookup service=dovecot Aug 20 09:03:03 ajk dovecot: auth-worker(17041): Debug: pam(erickom(a)metropolitan.org.za,10.0.0.103): #1/1 style=1 msg=Password: Aug 20 09:03:06 ajk dovecot: auth-worker(17041): pam(erickom(a)metropolitan.org.za,10.0.0.103): pam_authenticate() failed: Authentication failure (password mismatch?) (given password: ni$ Aug 20 09:03:08 ajk dovecot: auth: Debug: client passdb out: FAIL#0111#011user=erickom(a)metropolitan.org.za Aug 20 09:03:08 ajk dovecot: auth: Debug: client in: AUTH#0112#011LOGIN#011service=imap#011session=okfspVvkTAAKAABn#011lip=10.0.0.244#011rip=10.0.0.103#011lport=143#011rport=57164 Aug 20 09:03:12 ajk dovecot: auth: Debug: client passdb out: CONT#0112#011VXNlcm5hbWU6 Aug 20 09:03:12 ajk dovecot: auth: Debug: client in: CONT#0112#011ZXJpY2tvbUBtZXRyb3BvbGl0YW4ub3JnLnph (previous base64 data may contain sensitive data) Aug 20 09:03:12 ajk dovecot: auth: Debug: client passdb out: CONT#0112#011UGFzc3dvcmQ6 Aug 20 09:03:12 ajk dovecot: auth: Debug: client in: CONT#0112#011bmluYTAxMDE4M2M= (previous base64 data may contain sensitive data) Aug 20 09:03:12 ajk dovecot: auth-worker(17041): Debug: pam(erickom(a)metropolitan.org.za,10.0.0.103): lookup service=dovecot Aug 20 09:03:12 ajk dovecot: auth-worker(17041): Debug: pam(erickom(a)metropolitan.org.za,10.0.0.103): #1/1 style=1 msg=Password: Aug 20 09:03:14 ajk dovecot: auth-worker(17041): pam(erickom(a)metropolitan.org.za,10.0.0.103): pam_authenticate() failed: Authentication failure (password mismatch?) (given password: ni$ Aug 20 09:03:16 ajk dovecot: auth: Debug: client passdb out: FAIL#0112#011user=erickom(a)metropolitan.org.za Aug 20 09:03:16 ajk dovecot: auth: Debug: client in: AUTH#0113#011PLAIN#011service=imap#011session=okfspVvkTAAKAABn#011lip=10.0.0.244#011rip=10.0.0.103#011lport=143#011rport=57164#011r$ Aug 20 09:03:20 ajk dovecot: auth-worker(17041): Debug: pam(erickom(a)metropolitan.org.za,10.0.0.103): lookup service=dovecot Aug 20 09:03:20 ajk dovecot: auth-worker(17041): Debug: pam(erickom(a)metropolitan.org.za,10.0.0.103): #1/1 style=1 msg=Password: Aug 20 09:03:22 ajk dovecot: auth-worker(17041): pam(erickom(a)metropolitan.org.za,10.0.0.103): pam_authenticate() failed: Authentication failure (password mismatch?) (given password: ni$ Aug 20 09:03:24 ajk dovecot: auth: Debug: client passdb out: FAIL#0113#011user=erickom(a)metropolitan.org.za Aug 20 09:03:24 ajk dovecot: imap-login: Disconnected (auth failed, 3 attempts in 21 secs): user=<erickom(a)metropolitan.org.za>, method=PLAIN, rip=10.0.0.103, lip=10.0.0.244, session=<o$ Thanks for you assistance. -- Kind Regards Eric Kom System Administrator & Programmer - Metropolitan College _________________________________________ / You are scrupulously honest, frank, and \ | straightforward. Therefore you have few | \ friends. / ----------------------------------------- \ \ .--. |o_o | |:_/ | // \ \ (| Kom | ) /'\_ _/`\ \___)=(___/ 2 Hennie Van Till, White River, 1240 Tel: 013 750 2255 | Fax: 013 750 0105 | Cell: 078 879 1334 erickom(a)kom.za.net | erickom(a)metropolitancollege.co.za www.kom.za.net | www.kom.za.org | www.erickom.co.za Key fingerprint: 513E E91A C243 3020 8735 09BB 2DBC 5AD7 A9DA 1EF5

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[Dovecot] High Load Average on POP/IMAP.
by Kavish Karkera 21 Aug '13

21 Aug '13

Hi, We have a serious issue running on our POP/IMAP servers these days. The load average of a servers spikes up to 400-500 as a uptime command result, for a particular time period , to be specific mostly in noon time and evening, but it last for few minutes only. We have 2 servers running dovecot 1.1.20 , in loadbanlancer, We have used KEEPLIVE (1.1.13) for loadbalacing. Server specification. Operating System : CentOS 5.5 64bit CPU cores : 16 RAM : 8GB Mail and Indexes are mounted on NFS (NetApp). Below is the dovecot -n ... (top results during high spike) ############################################################################################# # 1.1.20: /usr/local/etc/dovecot.conf # OS: Linux 2.6.28 x86_64 CentOS release 5.5 (Final) log_path: /var/log/dovecot-info.log info_log_path: /var/log/dovecot-info.log syslog_facility: local1 protocols: imap imaps pop3 pop3s listen(default): *:143 listen(imap): *:143 listen(pop3): *:110 ssl_listen(default): *:993 ssl_listen(imap): *:993 ssl_listen(pop3): *:995 ssl_cert_file: /usr/local/etc/ssl/certs/dovecot.pem ssl_key_file: /usr/local/etc/ssl/private/dovecot.pem disable_plaintext_auth: no login_dir: /usr/local/var/run/dovecot/login login_executable(default): /usr/local/libexec/dovecot/imap-login login_executable(imap): /usr/local/libexec/dovecot/imap-login login_executable(pop3): /usr/local/libexec/dovecot/pop3-login login_greeting: Welcome to Popserver. login_process_per_connection: no max_mail_processes: 1024 mail_max_userip_connections(default): 100 mail_max_userip_connections(imap): 100 mail_max_userip_connections(pop3): 50 verbose_proctitle: yes first_valid_uid: 99 first_valid_gid: 99 mail_location: maildir:~/Maildir:INDEX=/indexes/%h:CONTROL=/indexes/%h mmap_disable: yes mail_nfs_storage: yes mail_nfs_index: yes lock_method: dotlock mail_executable(default): /usr/local/libexec/dovecot/imap mail_executable(imap): /usr/local/libexec/dovecot/imap mail_executable(pop3): /usr/local/libexec/dovecot/pop3 mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): quota mail_plugin_dir(default): /usr/local/lib/dovecot/imap mail_plugin_dir(imap): /usr/local/lib/dovecot/imap mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3 pop3_no_flag_updates(default): no pop3_no_flag_updates(imap): no pop3_no_flag_updates(pop3): yes pop3_lock_session(default): no pop3_lock_session(imap): no pop3_lock_session(pop3): yes pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls lda: postmaster_address: admin(a)research.com mail_plugins: cmusieve quota mail_log mail_plugin_dir: /usr/local/lib/dovecot/lda auth_socket_path: /var/run/dovecot/auth-master auth default: worker_max_count: 15 passdb: driver: sql args: /usr/local/etc/dovecot-mysql.conf userdb: driver: sql args: /usr/local/etc/dovecot-mysql.conf userdb: driver: prefetch socket: type: listen client: path: /var/run/dovecot/auth-client mode: 432 user: nobody group: nobody master: path: /var/run/dovecot/auth-master mode: 384 user: nobody group: nobody plugin: quota_warning: storage=95%% /usr/local/bin/quota-warning.sh 95 %u quota_warning2: storage=80%% /usr/local/bin/quota-warning.sh 80 %u quota: maildir:storage=64 ############################################################################################## ############################################################################################## top - 12:08:31 up 206 days, 10:45, 3 users, load average: 189.88, 82.07, 55.97 Tasks: 771 total, 1 running, 767 sleeping, 1 stopped, 2 zombie Cpu(s): 8.3%us, 7.6%sy, 0.0%ni, 8.3%id, 75.0%wa, 0.0%hi, 0.8%si, 0.0%st Mem: 16279824k total, 11913788k used, 4366036k free, 334308k buffers Swap: 4192956k total, 0k used, 4192956k free, 10359492k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 408 mysql 18 0 384m 38m 4412 S 52.8 0.2 42221:44 mysqld 29326 nobody 15 0 22688 10m 1112 D 3.9 0.1 0:00.05 imap 29313 nobody 16 0 14892 4892 1000 S 3.1 0.0 0:00.07 imap 28129 nobody 16 0 23688 4148 1140 S 2.3 0.0 0:00.10 imap 28936 nobody 16 0 25048 13m 1108 S 2.3 0.1 0:00.06 imap 29302 nobody 16 0 15168 3924 1000 S 2.3 0.0 0:00.05 imap 29307 nobody 16 0 12864 2892 1000 S 2.3 0.0 0:00.03 imap 21956 root 15 0 13272 1652 800 R 1.6 0.0 0:06.46 top 29119 nobody 16 0 26000 9324 1096 D 1.6 0.1 0:00.11 imap 29158 nobody 16 0 12684 2728 1028 S 1.6 0.0 0:00.03 imap 29204 nobody 16 0 14400 4232 1000 S 1.6 0.0 0:00.08 imap 29262 nobody 16 0 25436 2776 1120 S 1.6 0.0 0:00.02 imap 3397 root 10 -5 0 0 0 S 0.8 0.0 28:02.90 rpciod/2 3401 root 10 -5 0 0 0 S 0.8 0.0 337:30.77 rpciod/6 4218 root 16 0 8948 1548 588 S 0.8 0.0 8:05.53 dovecot 10214 root 15 0 50868 1968 1468 S 0.8 0.0 0:30.08 dovecot-auth 27454 nobody 16 0 19220 5048 1256 D 0.8 0.0 0:00.17 imap 27820 nobody 16 0 18916 4704 1252 D 0.8 0.0 0:00.08 imap 27925 nobody 16 0 11180 1524 1000 S 0.8 0.0 0:00.07 imap 28094 nobody 16 0 11536 2068 1148 S 0.8 0.0 0:00.13 imap 28150 nobody 16 0 12528 2396 1104 S 0.8 0.0 0:00.08 imap 28196 nobody 16 0 13976 3792 1148 S 0.8 0.0 0:00.21 imap 28292 nobody 16 0 11984 1808 1004 S 0.8 0.0 0:00.04 imap 28343 nobody 16 0 11584 2052 1152 D 0.8 0.0 0:00.02 imap 28352 nobody 15 0 11108 1492 1004 S 0.8 0.0 0:00.04 imap 28413 nobody 16 0 11220 1568 996 S 0.8 0.0 0:00.02 imap 28434 nobody 16 0 12492 2444 1004 S 0.8 0.0 0:00.05 imap 28467 nobody 16 0 11852 2044 1004 D 0.8 0.0 0:00.06 imap 28558 nobody 16 0 11904 2316 1168 S 0.8 0.0 0:00.02 imap 28643 nobody 16 0 11312 1688 1000 S 0.8 0.0 0:00.04 imap 28711 nobody 15 0 12048 1868 1004 S 0.8 0.0 0:00.04 imap 28779 nobody 16 0 23392 10m 1000 D 0.8 0.1 0:00.05 imap ############################################################################################ Regards, Kavish Karkera

3 3

[Dovecot] Delivering message to other mailbox
by Frank de Bot 21 Aug '13

21 Aug '13

Hi, On my mailserver I have for each mailbox a sieve script to put Spam-marked message into a folder (match header, then fileinto 'Spam'). This works, but I want to deliver spam-marked messages to a different mailbox. For each user a seperate mailbox is created next to the existing mailbox, allowing different authentication. How can I do this with dovecot/pigeonhole? I figured out I could redirect is the user.spam@domain which delivers to the other mailbox, but it will go into a new delivery process with amavis set up. (There's no point to scan a single message twice). Is there a way I can accomplish to directly deliver a spam-marked message to a different mailbox? Regards, Frank de Bot

2 1

[Dovecot] Using procmail to mark messages as read in dovecot
by LuKreme 20 Aug '13

20 Aug '13

So, I use procmail extensively, and I have for a long time, but marking messages as 'read' in a Maildir has always been a little wonky: TRAP='mv "$LASTFOLDER" "${LASTFOLDER}:2,S"' Since I've switched to dovecot, is there a way to mark a message on delivery as read or not new or seen? -- Clarke's Law: Sufficiently advanced technology is indistinguishable from magic

6 7

[Dovecot] Two of special mailboxes?
by LuKreme 20 Aug '13

20 Aug '13

# ls -lsd /path/to/virtual/.*{Junk,Drafts,Sent,Trash} 8 drwx------ 5 89 89 512 Aug 19 06:46 .Drafts 8 drwx------ 5 89 89 512 Aug 19 06:42 .INBOX.Drafts 8 drwx------ 5 89 89 512 Aug 20 11:44 .INBOX.Junk 8 drwx------ 5 89 89 512 Aug 19 06:42 .INBOX.Sent 8 drwx------ 5 89 89 512 Aug 19 19:41 .INBOX.Trash 8 drwx------ 5 89 89 512 Aug 19 06:55 .Junk 8 drwx------ 5 89 89 512 Aug 19 06:46 .Sent 8 drwx------ 5 89 89 512 Aug 20 11:44 .Trash # ls -nlsd /home/kremels/Maildir/.*{Junk,Drafts,Sent,Trash} 8 drwx------ 6 1004 1004 512 Aug 20 11:45 /home/kremels/Maildir/.Drafts 8 drwx------ 5 1004 1004 512 Aug 19 10:08 /home/kremels/Maildir/.INBOX.Drafts 8 drwx------ 5 1004 1004 512 Aug 19 10:01 /home/kremels/Maildir/.INBOX.Sent 8 drwx------ 6 1004 1004 512 Aug 20 11:42 /home/kremels/Maildir/.Junk 8 drwx------ 6 1004 1004 512 Aug 14 21:47 /home/kremels/Maildir/.NotJunk 8 drwx------ 6 1004 1004 512 Aug 19 22:24 /home/kremels/Maildir/.Sent 8 drwx------ 6 1004 1004 512 Aug 20 11:41 /home/kremels/Maildir/.Trash AS you can see, I only have SOME dupes in my list account. $ doveconf -n # 2.2.5: /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 9.1-RELEASE i386 auth_mechanisms = CRAM-MD5 DIGEST-MD5 APOP LOGIN PLAIN disable_plaintext_auth = no first_valid_uid = 89 log_path = /var/log/dovecot login_log_format_elements = user=<%u> %r %m %c mail_location = maildir:~/Maildir mail_max_userip_connections = 50 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox NotJunk { auto = subscribe } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd } userdb { args = /etc/dovecot/dovecot-sql.conf.ext default_fields = uid=vpopmail gid=vchkpw mail_location=/usr/local/virtual/%u driver = sql } -- WHO KNOWS WHAT EVIL LURKS IN THE HEART OF MEN? The Death of Rats looked up from the feast of potato. SQUEAK, he said. Death waved a hand dismissively. WELL, YES, OBVIOUSLY *ME*, he said. I JUST WONDERED IF THERE WAS ANYONE ELSE. --The Truth

1 0

[Dovecot] age-limit
by Carlos L 20 Aug '13

20 Aug '13

I'm trying to figure if there is a "proactive" way to enforce item age on maildir . maildir-cleanup kind of does it but im looking for something similiar to quota ++ that you can add to dovecot but for item age not size. Any ideas?

3 3

[Dovecot] Maximum number of connections from user+IP exceeded
by LuKreme 20 Aug '13

20 Aug '13

All of a sudden I am getting these errors on one of my accounts: imap-login: Info: Maximum number of connections from user+IP exceeded (mail_max_userip_connections=10) It was working fine last night when I went to bed, and is posting these errors nearly constantly (about one every second) when I checked mail after waking up this morning. The account is question is my main account and has a lot of mail, but it is not the account with the most mailboxes, that one is working fine. I looked at the documentation on how to increase this setting, but <http://wiki.dovecot.org/MainConfig> is for 1.x and clicking the 'wiki2" link brings up a mostly blank page with no configuration info at all. It looks like in dovecot 1.x this would go in an protocol imap block, but I don't have one of those in my conf. # doveconf -n # 2.2.5: /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 9.1-RELEASE i386 auth_mechanisms = plain login disable_plaintext_auth = no first_valid_uid = 89 log_path = /var/log/dovecot mail_location = maildir:~/Maildir managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox NotJunk { auto = subscribe } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd } userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } -- 'Never trust a ruler who puts his faith in tunnels and bunkers and escape routes. The chances are that his heart isn't in the job.'

6 11

[Dovecot] DRAC plugin for Dovecot-2.x
by USUDA Hisashi 20 Aug '13

20 Aug '13

Hello All, I released the DRAC plugin for dovecot-2.x. http://sourceforge.jp/projects/dovecot2-drac/ It's based the plugin for dovecot-1.1: http://dovecot.org/patches/1.1/drac.c Please see README file for details. Best regards, -- mailto:usuda@designet.co.jp

2 1

[Dovecot] Calling dovecot-lda correctly from exim for virtual user setup
by Frerich Raabe 20 Aug '13

20 Aug '13

Hi, I'm running Dovecot 2.1.7 on Debian. Exim is the MTA. I was recently made aware of the fact that the way in which Exim invokes dovecot-lda is prone to code injection: dovecot_virtual_delivery: driver = pipe command = HOME=/home/vmail/\$local_part /usr/lib/dovecot/dovecot-lda -f \$sender_address use_shell .. I.e. a command is executed via the shell, and Exim uses non-sanitized user input (mail header fields) to construct the command. Now, the reason I invoked dovecot like that is to pass a plausible value for the HOME environment variable, so that dovecot-lda can determine where the Maildir directory of the recipient is. Is there any way to achieve this without requiring HOME to be set correctly? I looked at the -m switch but as far as I can see that merely defines the destination mailbox, but not the path to the Maildir directory, correct? -- Frerich Raabe - raabe(a)froglogic.com www.froglogic.com - Multi-Platform GUI Testing

2 3

Re: [Dovecot] Dovecot + SELinux permission problems
by Thomas Harold 20 Aug '13

20 Aug '13

On 6/24/2013 9:58 AM, Johnny wrote: > Yes, /var/log/audit/ with audit.log. There are some archived logs as > well, but no recent messages regarding dovecot perms. Typically you could use "sealert -a /var/log/audit/audit.log /var/log/audit/audit.log.1" to get a feel for how many SELinux exceptions are happening. Also, when you say that the restorecon -R did not fix the issue, did you check the output of "ls -Z" after running it? However, looking at your original message, I'm wondering why the forward slashes are doubled up. For instance: "/home/user/data1/Maildir//"

2 1

[Dovecot] Disagreement on where mail goes.
by LuKreme 19 Aug '13

19 Aug '13

My virtual users have their mail stored in /usr/local/virtual/user(a)example.com/ dovecot wants to read the mail from /usr/local/virtual/user(a)example.com/Maildir which is causing problems since all new mail is being written in /usr/local/virtual/user(a)example.com/new and dovecot is looking in /usr/local/virtual/user(a)example.com/Maildir/new For the local users, /home/user/Maildir is the right directory. for right now I've had to kludge a script that moves mail from /usr/local/virtual/user(a)example.com/new to /usr/local/virtual/user(a)example.com/Maildir/new every two minutes. -- First we must assume a spherical cow.

3 4

[Dovecot] Maildirmake equiv?
by LuKreme 19 Aug '13

19 Aug '13

Since I am using dovecot I do not have courier installed, but Courier had a very handy tool for making maildir folders called `maildirmake` which I used in some automated backup scripts. How do I duplicate maildirmake in dovecot? for example: #!/bin/bash # v1.2a Testing for new dovecot install # Archive mail from folders without [0-9]{4} Maildirs # after they are 21 days old to a yearly folder MDIR="$HOME/Maildir" MDM="/usr/local/bin/maildirmake" YEAR=`/usr/local/bin/gdate -d "last month" '+%Y'` echo "The Year is $YEAR..." OIFS=$IFS IFS=" " for I in `find $MDIR -maxdepth 1 -mindepth 1 -type d| egrep -v "[0-9][0-9][0-9][0-9]"`; do MYDIR="${I}" TBASE=`basename $MYDIR` # if [ ! $TBASE == "Maildir" ]; then TDIR=`dirname $MYDIR` TARGET="${TDIR}/.zz${TBASE}.${YEAR}" # echo "$MYDIR $TARGET" if [ -d "$MYDIR/cur" ]; then echo -n "Processing ${MYDIR} => ${TARGET}..." if [ ! -d "${TARGET}" ]; then echo "" echo -n "WARNING ${TARGET} does not exist. invoking $MDM ${TARGET}..." $MDM "${TARGET}" fi if [ -d "${TARGET}" ]; then # echo "$TARGET does exist, moving files" find ${MYDIR}/cur -type f -ctime +21 -exec mv {} ${TARGET}/cur/ \; echo "done." else echo "$TARGET does not exist" fi fi # fi done IFS=$OIFS -- Forever was over. All the sands had fallen. The great race between entropy and energy had been run, and the favourite had been the winner after all. Perhaps he ought to sharpen the blade again? No. Not much point, really.

7 9

[Dovecot] dovecot is working, sort of
by LuKreme 19 Aug '13

19 Aug '13

I have dovecot setup and authenticating away for local users, but when I try to add MySQL users from postfix admin, not only does that fail, but all authentication fails. This configuration does not work: doveconf -n # 2.2.5: /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 9.1-RELEASE i386 namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd } userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } and I get the following errors for *ALL* attempts to connect, not just sql ones: mail dovecot: imap-login: Error: Timeout waiting for handshake from auth server. my pid=10591, input bytes=0 Aug 14 22:56:36 mail dovecot: imap-login: Error: Timeout waiting for handshake from auth server. my pid=10592, input bytes=0 mail dovecot: auth: Fatal: mysql: Missing value in connect string: password-dovecot mail dovecot: master: Error: service(auth): command startup failed, throttling for 60 secs mail dovecot: imap-login: Disconnected: Auth process broken (disconnected before auth was ready, waited 1 secs): user=<>, rip=67.176.106.217, lip=75.148.117.91, TLS, session=<U82VTPXjvQBDsGrZ> This configuration works, but only for local users obviously: # 2.2.5: /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 9.1-RELEASE i386 namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passed } The dovecot-sql.conf.ext file is: $ cat /etc/dovecot/dovecot-sql.conf.ext driver = mysql connect = host=localhost dbname=postfix user=dovecot password-dovecot default_pass_scheme = CRYPT password_query = select password from mailbox where username ='%u' user_query = select concat('/usr/local/virtual/', maildir) from mailbox where username = '%u; #iterate_query = SELECT username AS user FROM users Both to the password_query and user_query lines return the right results when I do them manually in MySQL. The one thing I am very unsure of is the default_pass_scheme (the postfixdb is a postfixadmin db), but even if that were completely wrong, it seems like the local users should still be able to authenticate even if the MySQL ones cannot? -- And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does.

4 8

[Dovecot] Proxy: %$ should contain username
by Reindl Harald 17 Aug '13

17 Aug '13

for nomal operations * login_log_format_elements = %r %m %k * login_log_format = %$: %s would be perfect because "proxy(h.reindl(a)thelounge.net)" contains the username *but* in case of auth errors "Disconnected (auth failed, 1 attempts in 2 secs)" does not show the username - hence currently there exists no way to avoid username double-logging in normal operations without render the log unusebale in case auf dictionary attacks / authentication failers another option would be make %$ obsolete because i do not need to see "proxy(h.reindl(a)thelounge.net): started proxying to 127.0.0.1:143" because i know that *but* in case of auth errors "%s" doe snot contain any hint of a error and would show "user=<h.reindl(a)thelounge.net>, 10.0.0.241, CRAM-MD5, TLS" even with a wrong password and nothing else that is not really optimal, in case of "tail -f" someone does not want redundant informations leading to linebreaks as well it wastes disk space Aug 17 13:17:04 mail dovecot: imap-login: proxy(h.reindl(a)thelounge.net): started proxying to 127.0.0.1:143: user=<h.reindl(a)thelounge.net>, 10.0.0.241, CRAM-MD5, TLS ____________________________________________________________________________________________________________ login_log_format_elements = %r %m %k login_log_format = %$: %s Aug 17 14:31:25 testserver dovecot: imap-login: Disconnected (auth failed, 1 attempts in 2 secs): 84.113.45.81, PLAIN ____________________________________________________________________________________________________________ login_log_format_elements = user=<%u> %r %m %c login_log_format = %$: %s Aug 17 14:29:05 mail dovecot: imap-login: Disconnected (auth failed, 1 attempts in 0 secs): user=<h.reindl(a)thelounge.net>, 10.0.0.6, PLAIN ____________________________________________________________________________________________________________

1 0

[Dovecot] MailLocation
by LuKreme 17 Aug '13

17 Aug '13

In reading http://wiki2.dovecot.org/MailLocation it is not clear to me the syntax for setting mail_location inside a userdb block. --

2 3

[Dovecot] OS X
by Jonathan Kenyon 17 Aug '13

17 Aug '13

Hi I have updated a 10.6.8 to 10.8.4 and it transferred the dovecot mail. All except one sent folder. This folder was a sent mail box and the CUR folder is in the correct place and i have deleted the index files but it still is not showing up in a mail app. Can someone suggest a way to re catalogue it. many thanks jonny

2 1

[Dovecot] Any way to test a master user's password?
by Axel Luttgens 16 Aug '13

16 Aug '13

Hello, Is there any way to easily check a master user's password, for itself, without having to refer to another user or to weak the security by allowing master users to log in for themselves? For example, this works: # doveadm auth test 'someuser*masteruser' Password: <enter master user's password here> passdb: someuser*masteruser auth succeeded but depends on the existence of another user, and is thus contingent and unnecessarily heavy. TIA, Axel

2 1

[Dovecot] rdiff-backup of Maildir?
by Thomas Harold 16 Aug '13

16 Aug '13

What's the best way to do long-term backups of the Maildir format these days? Traditionally we've just done a rdiff-backup or pointed Bacula at the Maildir. Both give us the option to reset a particular mailbox back to a previous day (any day within the last N months). Do we just need to snapshot the LVM volume that holds all the Maildir boxes, or is there some additional commands that we should run before doing the LVM snapshot?

1 0

[Dovecot] IMAP Proxying and SSL Certificates on OpenBSD
by dago＠quantentunnel.de 16 Aug '13

16 Aug '13

Hi list, I am currently trying to configure dovecot to act as a imap proxy in front of a Groupwise server. Because of a policy no services of the gw server may be directly served to the web. So currently this is only a security measure. Dovecot was previously used for providing sasl-auth capabilities to postfix. IMAP proxy features should be added now. Authentication backend is LDAP. OS is OpenBSD 5.2. Dovecot version is 2.1.8. Currently I am fighting with the following error in the logs: dovecot: master: Dovecot v2.1.8 starting up dovecot: auth: Warning: userdb passwd: Move templates args to override_fields setting dovecot: auth: Error: passwd(username,78.104.X.X,<e9YE/gDkOQBOaKfg>): getpwnam() failed: Operation not permitted dovecot: imap-login: Login: user=<username>, method=PLAIN, rip=78.104.X.X, lip=5.9.X.X, mpid=1765, session=<e9YE/gDkOQBOaKfg> dovecot: imap(username): Error: user username: Initialization failed: Initializing mail storage from mail_location setting failed: imapc: missing imapc_password dovecot: imap(username): Error: Invalid user settings. Refer to server log for more information. I hope to also see therein the cause for not providing STARTTLS: # openssl s_client -connect mail.example.com:143 -starttls imap CONNECTED(00000003) didn't found STARTTLS in server response, try anyway... 15096:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:/SourceCache/OpenSSL098/OpenSSL098-47/src/ssl/s23_clnt.c:607: As postfix is already using the certificates, they should be okay …. # dovecot -n # 2.1.8: /etc/dovecot/dovecot.conf # OS: OpenBSD 5.2 i386 disable_plaintext_auth = no imapc_host = 10.0.0.2 mail_gid = vmail mail_home = /home/vmail/%u mail_location = imapc:~/imapc mail_uid = vmail passdb { args = scheme=plain-md5 username_format=%n /etc/dovecot/passwd driver = passwd-file } passdb { args = /etc/dovecot/dovecot-ldap.conf default_fields = userdb_imapc_user=%u userdb_imapc_password=%w driver = ldap } protocols = imap service auth { unix_listener /var/spool/postfix/private/auth { group = _postfix mode = 0660 user = _postfix } user = root } service imap-login { chroot = login } service pop3-login { chroot = login } ssl = no ssl_ca = </etc/ssl/ca.crt ssl_cert = </etc/ssl/pf/mail.example.com.crt ssl_key = </etc/ssl/pf/mail.example.comkey userdb { args = username_format=%n /etc/dovecot/passwd driver = passwd } userdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } # dovecot-ldap.conf hosts = 10.0.0.2:389 dn = cn=ldapaccess,o=servercontext dnpass = secretpass auth_bind = yes ldap_version = 3 base = o=usercontext user_attrs = homeDirectory=home,uidNumber=uid,gidNumber=gid user_filter = (&(&(objectClass=Person)(cn=%u))(groupMembership=cn=SMTPsender,o=permissiongroups)) pass_attrs = cn=user,userPassword=password pass_filter = (&(&(objectClass=Person)(cn=%u))(groupMembership=cn=SMTPsender,o=permissiongroups)) Thanks in advance! Best regards

4 4

[Dovecot] Problems with openssl library path
by Christian Felsing 16 Aug '13

16 Aug '13

Hello, I tried to compile Dovecot 2.2.5 on Debian 6 with an alternate OpenSSL installation located at /usr/local/ssl A compilation with CPPFLAGS="-I/usr/local/ssl/include" \ LDFLAGS="-L/usr/local/ssl/lib -Wl,-rpath=/usr/local/ssl/lib" \ SSL_LIBS="-L/usr/local/ssl/lib -Wl,-rpath=/usr/local/ssl/lib" \ ./configure \ --prefix=/opt/dovecot-2.2.5 \ --enable-asserts \ --enable-largefile \ --with-ldap=yes \ --with-zlib \ --with-bzlib \ --with-libcap \ --with-ssl=openssl \ --with-gc \ --with-storages=maildir,mbox,mdbox,cydir \ create a working Dovecot, but it still uses the very old Debian 6 OpenSSL 0.9.8 instead my OpenSSL 1.0.1e LD_LIBRARY_PATH has also no effect, because Dovecot strips it out. Any hints? regards Christian

2 1

[Dovecot] Using dovecot in performance tests?
by Michal Zatloukal 16 Aug '13

16 Aug '13

Hello, please Cc me into replies, I'm not subscribed. My job as of late involves testing the performance of software that functions as IMAP/POP proxy. I have an account set up where a known collection of emails is delivered from postfix, and is then dowloaded by MUA on the test machine. The thing is, sending the emails (from a separate machine on LAN) actually takes more time than the download by MUA and is (probably?) an unnecessary load on the system that I could avoid. Ideally, I would like dovecot to treat all messages in a user's mail store as always-new, ie. they would be downloaded whenever the user connected (MUA settings and state permitting). Is something like that possible? Michal Zatloukal

1 0

[Dovecot] lda and home directory
by Bob Miller 16 Aug '13

16 Aug '13

Hello, I am using qmail and lda configured such that lda should not have to do a lookup for delivery. I set my defaultdelivery like so: |HOME=/home/mail/$USER /var/qmail/bin/preline -f /usr/local/libexec/dovecot/dovecot-lda Given that the email address being delivered to is bob.miller(a)computerisms.com, I expect $USER to be equal to bob.miller and $HOME to expand to /home/mail/bob.miller/. The problem is lda reports: Debug:_Home_dir_not_found:_/home/mail/bob.miller@computerisms.com/ The whole system up to here uses only the bob.miller part, and I can't find where it keeps adding the domain part from. I have tried changing all sorts of variables and config values to try and make it quit adding the domain part, but no matter what I change lda still tries to deliver the email address as username. The only measure of success I can report is that in some configurations mail delivers to /home/mail//. Where exactly is dovecot getting this value? Side question: I note in places throughout the wiki and internet variables such as $EXT, $USER, $DEST_USERNAME, and $FROM_ENVELOPE are used. I can find no documentation, beyond my own common sense anyway, to explain how/when these variables are expanded, and what I do find doesn't seem consistent to me. For example, on the CheckPassword page, $USER is implied to expand to Username, which could contain the domain or not. However on the lda/qmail page, the variable shown is $EXT@ $USER, which implies $USER will expand as only the domain part after the @ symbol and $EXT as everything before, yet changing the variable from $USER to $EXT in my defaultdelivery file has $HOME expand to /home/mail//. Where do I find the story on how these variables (as opposed to the % variables) work? (or more specifically, is there a $VAR I can use instead of $USER that will expand to just the part before the @?) -- Computerisms Bob Miller 867-334-7117 / 867-633-3760 http://computerisms.ca

2 2

[Dovecot] dovecot solr position index
by duonut 16 Aug '13

16 Aug '13

Hi I am currently running dovecot 2.2.5 and solr 4.4.0 I am using the pre supplied schema.xml with dovecot with a single change f field type from test to text_general to get it running. When I do a multi word search in a mailbox, solr complains that a position index has not been built, throws a 500 error and dovecot reverts back to searching each mail message. Does anyone know what change I need to make to the solr schema to build the position index? -- View this message in context: http://dovecot.2317879.n4.nabble.com/dovecot-solr-position-index-tp43897.ht… Sent from the Dovecot mailing list archive at Nabble.com.

1 0

[Dovecot] Couldn't drop privileges
by LuKreme 16 Aug '13

16 Aug '13

attempts to login result in: dovecot: imap-login: Login: user=<lists@*munged*>, method=PLAIN, rip=ip.xx.yy.zz, lip=75.148.117.91, mpid=75104, TLS, session=<cBjCqf/jdwAXGJaN> dovecot: imap(lists@*munged*): Error: user lists@*munged*: Couldn't drop privileges: User is missing UID (see mail_uid setting) dovecot: imap(lists@*munged*): Error: Internal error occurred. Refer to server log for more information. Local (shell) user authentication works fine. It looks to me like the authentication is working based on the first line, so I don't think the issue is in the dovecot-sql.conf.ext $ cat dovecot-sql.conf.ext driver = mysql connect = host=localhost dbname=postfix user=dovecot password=dovecot default_pass_scheme = MD5-CRYPT password_query = select password from mailbox where username ='%u' user_query = select maildir from mailbox where username = '%u' # home is set in userdb static, kept for history #user_query = select concat('/usr/local/virtual/', maildir) from mailbox where username = '%u' #user_query = select concat('/usr/local/virtual/', maildir), 'vpopmail' as uid, 'postfix' as gid, from mailbox where username = '%u' #iterate_query = SELECT username AS user FROM users # 2.2.5: /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 9.1-RELEASE i386 auth_mechanisms = plain login disable_plaintext_auth = no mail_location = maildir:~/Maildir managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox NotJunk { auto = subscribe } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd } userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } userdb { args = uid=vpopmail gid=postfix home=/usr/local/virtual/%u driver = static } I have also tried: userdb { args = uid=vpopmail gid=postfix driver = static } sql users all have their mail in /usr/local/virtual/lists@*munged* $ ls -lsd /usr/local/virtual/lists\@*munged* 8 drwxr-xr-x 12 vpopmail postfix 512 Aug 14 21:40 /usr/local/virtual/lists\@*munged* [New thread because the old one's original issue is solved] -- BUGS: There is no conversion specification for the phase of the moon." strftime(3) man page

2 7

[Dovecot] Error: dict client sent broken reply
by Chris Richards 15 Aug '13

15 Aug '13

I've been mucking about, experimenting with the expire plugin and using a dictionary. I've got the iteration query working when I do a normal expunge using: doveadm expunge -A mailbox "INBOX.Trash" savedbefore 1w and expunging works as expected. However, I've got over 12,000 accounts on this server, so I was hoping using the expire plugin to could help out. I've configured the plugin, and things kinda work, except that somewhere between 3700 and 3800 users, I abort with this: doveadm(someuseraccount@somedomain): Error: dict client (/var/run/dovecot/dict) sent broken reply doveadm(someuseraccount@somedomain): Error: Dictionary iteration failed doveadm: Error: Failed to iterate through some users It consistently fails at the same user. If I delete that user from the expire database, then it appears to fail on the next user. I also see this in the logs: dovecot: dict: Error: dict client: COMMIT: Can't commit while iterating I've absolutely no idea where to go from here to troubleshoot this. Any guidance would be appreciated. Thanks, Chris doveconf -n: # 2.1.12: /etc/dovecot/dovecot.conf # OS: Linux 3.7.5-hardened-r1 x86_64 Gentoo Base System release 2.1 ext4 auth_master_user_separator = * auth_mechanisms = plain login auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@& auth_verbose_passwords = plain default_process_limit = 200 dict { quota = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext } disable_plaintext_auth = no login_greeting = Awaiting command... mail_location = maildir:/home/vmail/%d/%n/Maildir mail_plugins = " quota" mail_privileged_group = 100 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = INBOX. separator = . type = private } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { expire = Trash 7 expire2 = Trash/* 7 expire3 = Spam 7 quota = dict:User quota:%u:proxy::quota quota_rule = *:storage=200M quota_warning = storage=99%% quota-warning 99 %n %d quota_warning2 = storage=95%% quota-warning 95 %n %d quota_warning3 = storage=80%% quota-warning 80 %n %d quota_warning4 = -storage=95%% quota-warning 'less than 95' %n %d sieve = ~/.dovecot.sieve sieve_default = /home/vmail/dovecot/sieve/default.sieve sieve_dir = ~/sieve sieve_global_dir = /home/vmail/dovecot/sieve } protocols = imap pop3 sieve lmtp service auth-worker { user = $default_internal_user } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { group = dovecot mode = 0666 user = dovecot } user = $default_internal_user } service dict { unix_listener dict { mode = 0600 user = vmail } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service quota-warning { executable = script /etc/dovecot/quota-warning.sh unix_listener quota-warning { user = vmail } user = dovecot } ssl_cert = </etc/ssl/dovecot/server.pem ssl_key = </etc/ssl/dovecot/server.key userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol lmtp { mail_plugins = sieve quota postmaster_address = postmaster@domain } protocol lda { mail_plugins = " quota sieve quota" } protocol imap { mail_max_userip_connections = 20 mail_plugins = " quota quota imap_quota" } protocol pop3 { mail_plugins = " quota quota" } >From dovecot-dict-sql.conf.ext: connect = host=localhost dbname=maildb user=dbuser password=dbpass # CREATE TABLE quota ( # username varchar(100) not null, # bytes bigint not null default 0, # messages integer not null default 0, # primary key (username) # ); map { pattern = priv/quota/storage table = quota_usage username_field = address value_field = quota_bytes } map { pattern = priv/quota/messages table = quota_usage username_field = address value_field = quota_messages } # CREATE TABLE expires ( # username varchar(100) not null, # mailbox varchar(255) not null, # expire_stamp integer not null, # primary key (username, mailbox) # ); map { pattern = shared/expire/$user/$mailbox table = expires value_field = expire_stamp fields { address = $user folder = $mailbox } } dovecot-sql.conf.ext driver = mysql connect = host=/var/run/mysqld/mysqld.sock dbname=maildb user=dbuser password=dbpass default_pass_scheme = PLAIN user_query = SELECT homedir AS home, maildir AS mail, uid AS uid, gid AS gid, quota_rule AS quota_rule FROM email WHERE address = CONVERT('%u' USING latin1) AND is_alias=0; password_query = SELECT address AS user, NULL as password, homedir AS userdb_home, maildir as userdb_mail, uid AS userdb_uid, gid AS userdb_gid, quota_rule AS userdb_quota_rule, 'Y' AS nopassword FROM email WHERE address = CASE WHEN ('%d' = '') THEN CONCAT (CONVERT('%n' USING latin1), '@bordernet.com.au') ELSE CONVERT('%u' USING latin1) END AND is_alias=0 AND CheckPasswordFunc(CONVERT('%n' USING latin1), '%d', CONVERT('%w' USING latin1), '%r'); iterate_query = SELECT address AS user FROM email WHERE is_alias=0 AND length(password) > 1

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[Dovecot] Sieve-storage: couldn't find storage root directory
by Asai 15 Aug '13

15 Aug '13

Greetings, Using Dovecot 2.2.4. In my DSync logs, I'm getting the error message: Error: sieve-storage: couldn't find storage root directory; sieve_dir was left unconfigured and autodetection failed However, I have the following configuration set: plugin { sieve = /vmail/%d/%n/sievescript sieve_dir = /vmail/%d/%n/ } Please, if you have a moment, tell me what I'm doing wrong here. Thank you. -- --Asai

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[Dovecot] Quota to use limits from LDAP and usage from FS
by Frank Steinberg 15 Aug '13

15 Aug '13

Hi, I'm new to Dovecot (switching from Cyrus). I'm using Dovecot 2.1.7 from Ubuntu 13.04. Maildir data is stored on a Linux ext4 filesystem with quotas. I would like to use mail quota in a way, so that the usage values are taken from the filesystem's quota system by the "fs" backend, while the per-user limits get read from LDAP. Due to debugging messages, it's my impression that reading the limits from LDAP works quite well when the user process starts, but when IMAP access actually takes place, the fs backend uses the filesystem's soft limits. Can anybody confirm this behavior or is there a way to achieve what I intend? -frank

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[Dovecot] Dovecot mailbox in read-only mode, Permanentflags empty
by Tommi A 15 Aug '13

15 Aug '13

Hi, I have installed Postfix + Dovecot 2.2.5 on a Fresh Arch Linux server (using Arch Linux repository packages). When accessing mailbox through Dovecot IMAP, all user mailboxes are in READ-ONLY mode. Here is a snippet from IMAP telnet conversation (after successful login). a LIST "" "*" * LIST (\HasNoChildren) "." INBOX a OK List completed. a EXAMINE INBOX * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS ()] Read-only mailbox. * 1 EXISTS * 1 RECENT * OK [UNSEEN 1] First unseen. * OK [UIDVALIDITY 1376459543] UIDs valid * OK [UIDNEXT 2] Predicted next UID * OK [NOMODSEQ] No permanent modsequences a OK [READ-ONLY] Examine completed (0.000 secs). I can read the messages but trying to delete results in: a uid store 1 +flags.silent (\Seen \Deleted) a OK Store ignored with read-only mailbox. I have tried ALOT of different settings (mbox/maildir/acl) but nothing seems to help, also no error messages are found in any logfiles. I noticed from mailing list archive that Dovecot has had Permanentflags problem in the past, but bugs should have been fixed. Is the bug back or is there something wrong with my configuration? Best Regards Tommi P.S. Here is my dovecot configuration: # 2.2.5: /etc/dovecot/dovecot.conf # OS: Linux 3.10.5-1-ARCH x86_64 auth_debug = yes debug_log_path = /var/log/dovecot_debug.log info_log_path = /var/log/dovecot.log mail_debug = yes mail_full_filesystem_access = yes mail_location = maildir:~/Maildir namespace inbox { hidden = no inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = type = private } passdb { driver = pam } plugin { mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd }

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[Dovecot] force ciphers order for clients
by Robert Schetterer 15 Aug '13

15 Aug '13

Hi Timo, reading this http://www.kuketz-blog.de/perfect-forward-secrecy-mit-apple-mail/ it looks like DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA can be forced in use with apple mail ( if no ECDHE is possible ,by missing openssl 1.x etc, seems that apple mail tries ECDHE first if fails its going to use RSA-AES128-SHA ) force soltution as tried ssl_cipher_list = DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!CBC:!PSK:!SRP:!DSS:!SSLv2:!RC4 so far so good , it worked nice with recent thunderbird too but it fails with outlook 2003 pop3s / win7 so i thought about using an order like this ssl_cipher_list = DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:ALL:!LOW:!SSLv2:!EXP:!aNULL does that makes sense ? ( using dove 2.1.x / openssl 0.9x ) Best Regards MfG Robert Schetterer -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Axel von der Ohe, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein

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Re: [Dovecot] force ciphers order for clients
by Reindl Harald 14 Aug '13

14 Aug '13

Am 14.08.2013 22:04, schrieb Robert Schetterer: > Am 14.08.2013 21:30, schrieb Reindl Harald: >> Am 14.08.2013 21:19, schrieb Robert Schetterer: >>>>> thx Harald, upgrading openssl to 1.x and using dove 2.2.5 is no option >>>>> at my setup lucid ubuntu yeter >>>> >>>> so you can practically forget it >>> >>> perhaps true forever, as long old clients are around, cause the server >>> can only workaround them >> >> not absolutely >> >> playing around with the setings below and https://www.ssllabs.com/ssltest/ >> turned out that the order is what counts, and that is really tricky >> >> i played around 5 hours with this absoluetly crap > > that sounds good, so you allready did many real world tests yeah and the bad is that it prove *currently* it is imposible to have perfect forward secrecy for most real world clients without open other vectors leading to fall back to a yellow B really sad is that playing around turned out how hard it is to force different clients at the same time to a good cipher and how one change in the order refelcts the overall result and facing this: "ssllabs" simulates negotiation of real clients (skipped in the screenshot) but we are missing the same for mailservers and thats why my conclusion is that we are hopeless as admins and can only offer things but not do much in case of clients using them __________________________ attached the current results for our webservers the only positive from the current resullt is that the sever supports ciphers for "Perfect Forward Secrecy" and the negative that it is only theory, so i stay at this config and say "dear browser vendors, i support it so use it with your damned client" because i can hardly use a config which get a yellow CVSS on security-audits to support FS for you" well, i could reven aise up "key exchange" to 90/95 but after that "FS" would not be listed at all the real sad thing is that the "FS" you see is not used by current clients which mostly use RC4 and if you add !MEDIUM the most start using FS-ciphers but are vulerable by BEAST-attack which let you fall down to grade B if i add !MEDIUM to dovecot Thunderbird does no longer connect at all

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[Dovecot] weird situation with pop3/imap proxy and postfix authentication
by Leonardo Rodrigues 14 Aug '13

14 Aug '13

Hello dovecot mailing list, I have a server running postfix and dovecot. I havea configuration on dovecot that allows me to provide imap4/pop3 messages for local hosted users as well as for proxied users on other servers. Basically, i have a simple MySQL table (imapproxy) with two fields, 'domain' and 'host'. My password_query isa 'UNION' query, exactly like: password_query=select endereco as user, password, '/var/spool/mail/%u' as userdb_home, 'maildir:/var/spool/mail/%u' as userdb_mail, 8 as userdb_uid, 12 as userdb_gid, concat('*:storage=', quota) as userdb_quota_rule, 'Trash:storage=+100M' as userdb_quota_rule2, 'Y' as proxy_maybe, '10.252.38.2' as host from emails where endereco = '%u' and ativa = '1' UNION select NULL as user, '%w' as password, NULL as userdb_home, NULL as userdb_mail, NULL as userdb_uid, NULL as userdb_gid, NULL as userdb_quota_rule, NULL as userdb_quota_rule2, 'Y' as proxy_maybe, imapproxy.host as host from imapproxy where imapproxy.dominio = '%d' the 10.252.38.2 address, on the query, is my local server when this query received a local user, from a domain that is NOT listed on the imapproxy table, results are like: *************************** 1. row *************************** user: localuser(a)domain.com.br password: (SSHA256 encrypted password) userdb_home: /var/spool/mail/localuser(a)domain.com.br userdb_mail: maildir:/var/spool/mail/localuser@domain.com.br userdb_uid: 8 userdb_gid: 12 userdb_quota_rule: *:storage=51200 userdb_quota_rule2: Trash:storage=+100M proxy_maybe: Y host: 10.252.38.2 when it receives a proxied domain, results are: *************************** 1. row *************************** user: NULL password: password userdb_home: NULL userdb_mail: NULL userdb_uid: NULL userdb_gid: NULL userdb_quota_rule: NULL userdb_quota_rule2: NULL proxy_maybe: Y host: 10.254.116.9 This is working just fine for IMAP4 and POP3 proxying. Local users (which domains are NOT listed on imapproxy table) can successfully login to their accountsas well as users from domains listed on imapproxy table can successfully login to their accounts. On SMTP authentication, tough, things are not so fine. SMTP authentication is provided by dovecot to postfix: [root@correio dovecot]# postconf mail_version mail_version = 2.7.1 [root@correio dovecot]# smtpd_sasl_auth_enable = yes smtpd_sasl_authenticated_header = yes smtpd_sasl_path = /var/spool/postfix/private/auth smtpd_sasl_security_options = noanonymous smtpd_sasl_type = dovecot service auth is defined on dovecot confs as: service auth { unix_listener auth-userdb { mode = 0600 user = mail group = mail } # Postfix smtp-auth unix_listener /var/spool/postfix/private/auth { mode = 0660 user = postfix group = postfix } } and it seems to be allowing ANYuser on any domain listed on the imapproxy table domains to login, even if the user does not exists or provides wrong password. In fact, it seems dovecot returns OK to postfix even without trying to contact the assigned server to that domain, as i cannot find any password-failed-specific log to that user on the specific server. Example: (a proxied domain) [root@correio dovecot]# telnet mail.proxieddomain.com.br 110 Trying 10.254.116.9... Connected to mail.proxieddomain.com.br (10.254.116.9). Escape character is '^]'. +OK Dovecot ready. user teste(a)proxieddomain.com.br +OK pass password -ERR Authentication failed. (i can successfully find this auth trial and fail on 10.254.116.9 logs) but on SMTP authentication, i have: [root@correio dovecot]# perl -MMIME::Base64 -e \ 'print encode_base64("teste\@proxieddomain.com.br\0teste\@proxieddomain.com.br\0password");' xxxxxxxxx(not the real encoded pass)xxxxxxxxxxxxxxxx= [root@correio dovecot]# [root@correio dovecot]# telnet localhost 587 Trying 127.0.0.1... Connected to localhost.localdomain (127.0.0.1). Escape character is '^]'. 220 mail.domain.com.br ESMTP EHLO test 250-mail.domain.com.br [ ... ] AUTH PLAIN (encoded string returned by perl encode_base64) 235 2.7.0 Authentication successful (and i cannot even find any authentication log, fail or success, on the specific server for proxieddomain.com.br) dovecot version is: [root@correio dovecot]# dovecot --version 2.2.2 [root@correio dovecot]# what am i doing wrong here ? How to have dovecot to really check users before giving OK to postfix on SMTP authentications ? Thanks for any hints ! -- Atenciosamente / Sincerily, Leonardo Rodrigues Solutti Tecnologia http://www.solutti.com.br Minha armadilha de SPAM, NÃO mandem email gertrudes(a)solutti.com.br My SPAMTRAP, do not email it

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[Dovecot] Patch to log the cipher suite used for TLS
by Matthias Scheler 14 Aug '13

14 Aug '13

Hello, the attached patch for Dovecot 2.2.4 improves the logging to include information about the cipher suite used for a TLS connection. Here is an example log line: Aug 13 21:49:55 colwyn dovecot: imap-login: Login: user=<tron>, method=CRAM-MD5, rip=2001:8b0:114:1::2, lip=2001:8b0:114:1::2, mpid=10567, TLS=<TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)>, session=<ZkEhYtrjSgAgAQiwARQAAQAAAAAAAAAC> This will e.g. allow you to find out that mobile phones use rather week cipher suites (128bit keys, no PFS). There is also something else I noticed. If I switch "mutt" (which generated the above log line) from using IMAP on port 143 and "STARTTLS" to use IMAPS on port 993 I get TLS 1.2: Aug 14 07:44:59 colwyn dovecot: imap-login: Login: user=<tron>, method=CRAM-MD5, rip=2001:8b0:114:1::2, lip=2001:8b0:114:1::2, mpid=1156, TLS=<TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)>, session=<0js/suLj9gAgAQiwARQAAQAAAAAAAAAC> Not sure why TLS 1.2 is only used in this case. It might be "mutt" doing that. Kind regards -- Matthias Scheler http://zhadum.org.uk/

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