- dovecot - dovecot.org

define auth timeout
by Daniel Betz 08 Feb '17

08 Feb '17

Hello list, when reloading dovecot via "doveadm reload" it throws me tons of errors like this: Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 imap: Error: net_connect_unix(/run/dovecot/auth-master) failed: Resource temporarily unavailable Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 imap: Error: net_connect_unix(/run/dovecot/auth-master) failed: Resource temporarily unavailable Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 imap: Error: net_connect_unix(/run/dovecot/auth-master) failed: Resource temporarily unavailable Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 imap: Error: net_connect_unix(/run/dovecot/auth-master) failed: Resource temporarily unavailable Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 imap: Error: net_connect_unix(/run/dovecot/auth-master) failed: Resource temporarily unavailable this is so long, till all client logins time out: Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 auth: Error: plain(mail(a)adress,xx.xx.xx.xx.<xxxxxxxxxxxx>): Request 8576.416 timed out after 150 secs, state=3 Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 auth: Error: plain(mail(a)adress,xx.xx.xx.xx.<xxxxxxxxxxxx>): Request 8574.736 timed out after 150 secs, state=3 Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 auth: Error: plain(mail(a)adress,xx.xx.xx.xx.<xxxxxxxxxxxx>): Request 13163.1758 timed out after 150 secs, state=3 Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 auth: Error: plain(mail(a)adress,xx.xx.xx.xx.<xxxxxxxxxxxx>): Request 13163.1760 timed out after 150 secs, state=3 Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 auth: Error: plain(mail(a)adress,xx.xx.xx.xx.<xxxxxxxxxxxx>): Request 13163.1761 timed out after 150 secs, state=3 Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 auth: Error: plain(mail(a)adress,xx.xx.xx.xx.<xxxxxxxxxxxx>): Request 13163.1762 timed out after 150 secs, state=3 Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 auth: Error: plain(mail(a)adress,xx.xx.xx.xx.<xxxxxxxxxxxx>): Request 8566.121 timed out after 150 secs, state=3 Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 auth: Error: plain(mail(a)adress,xx.xx.xx.xx.<xxxxxxxxxxxx>): Request 8583.1702 timed out after 150 secs, state=3 Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 auth: Error: login(mail(a)adress,xx.xx.xx.xx.<xxxxxxxxxxxx>): Request 8582.1834 timed out after 150 secs, state=3 Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 auth: Error: plain(mail(a)adress,xx.xx.xx.xx.<xxxxxxxxxxxx>): Request 8576.340 timed out after 150 secs, state=3 Feb 08 10:57:30 server1 dovecot[18243]: Feb 08 10:57:30 auth: Error: login(mail(a)adress,xx.xx.xx.xx.<xxxxxxxxxxxx>): Request 8576.335 timed out after 150 secs, state=3 I have searched for this timeout in dovecot config, but havent found something. Can you tell me how to define this timeout, or is this an LDAP timeout in userdb/passdb and dovecot-ldap.conf ? Or better, how to prevent this failures? I can see them sometimes in the log too w/o reloading. Regards, Daniel dovecot-ldap.conf: uris = ldapi://%2Fvar%2Frun%2Fldapi dn = cn=xxxxxxx,o=domain,c=com dnpass = xxxxxxxxxxxxx auth_bind = no ldap_version = 3 base = o=domain,c=com user_attrs = mail=user,mailMessageStore=home,\ mailQuota=quota_rule=*:storage=%$ iterate_filter= (|(mailHost=server1.domain.com)(mailHost=popserver1.domain.com)) user_filter = (&(accountstatus=active)(|(uid=%u)(mail=%u))) pass_attrs = mail=user,userPassword=password,=proxy_maybe=y,mailHost=host,=destuser=%u[%r] pass_filter = (&(accountstatus=active)(|(uid=%u)(mail=%u))) dovecot.conf: # 2.2.25 (7be1766): /usr/local/dovecot2/etc/dovecot/dovecot.conf # OS: Linux 3.10.0-327.36.3.el7.x86_64 x86_64 CentOS Linux release 7.2.1511 (Core) auth_cache_negative_ttl = 1 mins auth_cache_size = 64 M auth_cache_ttl = 2 hours auth_mechanisms = plain login auth_username_chars = auth_verbose = yes base_dir = /var/run/dovecot/ debug_log_path = /dev/null default_login_user = dovecot disable_plaintext_auth = no doveadm_password = # hidden, use -P to show it doveadm_port = 12345 first_valid_gid = 1001 first_valid_uid = 1001 info_log_path = /var/log/dovecot/messages lda_mailbox_autocreate = yes lda_original_recipient_header = X-Envelope-To log_path = /dev/stderr login_log_format_elements = user=[%u] method=%m rip=%r lip=%l %c mail_gid = 1001 mail_location = mdbox:~:INDEX=%h/INDEX mail_plugins = " notify replication stats" mail_uid = 1001 mbox_write_locks = fcntl namespace { inbox = yes location = mailbox Drafts { auto = no special_use = \Drafts } mailbox "Gesendete Elemente" { auto = no special_use = \Sent } mailbox "Infizierte Objekte" { auto = no special_use = \Junk } mailbox Sent { auto = no special_use = \Sent } mailbox "Sent Messages" { auto = no special_use = \Sent } mailbox Spam { auto = no special_use = \Junk } mailbox Trash { auto = no special_use = \Trash } prefix = separator = . type = private } namespace inbox { hidden = yes inbox = no list = no location = prefix = INBOX. separator = . } passdb { args = /usr/local/dovecot2/etc/dovecot/dovecot-ldap.conf driver = ldap } passdb { args = /usr/local/dovecot2/etc/dovecot/dovecot-ldap2.conf driver = ldap } plugin { quota = dict:User quota::file:%h/mdbox/dovecot-quota quota_warning = storage=85%% quota-warning 85 %u stats_refresh = 30 secs stats_track_cmds = yes } replication_max_conns = 30 sendmail_path = /usr/local/exim/bin/exim service aggregator { fifo_listener replication-notify-fifo { mode = 0666 user = popuser } unix_listener replication-notify { mode = 0666 user = popuser } } service anvil { client_limit = 60000 } service auth { client_limit = 60000 unix_listener auth-userdb { mode = 0666 user = popuser } unix_listener auth { mode = 0666 user = popuser } } service config { unix_listener config { user = popuser } } service dict { unix_listener dict { mode = 0666 user = popuser } } service doveadm { inet_listener { port = 12345 } user = popuser } service imap-login { chroot = login client_limit = 600 process_limit = 100 process_min_avail = 16 service_count = 0 } service imap { executable = /usr/local/dovecot2/libexec/dovecot/imap process_limit = 250000 } service ipc { client_limit = 60000 unix_listener ipc { mode = 0650 user = dovecot } unix_listener login/ipc-proxy { mode = 0650 user = dovecot } } service lmtp { unix_listener lmtp { mode = 0666 user = popuser } } service pop3-login { chroot = login client_limit = 600 process_limit = 100 process_min_avail = 16 service_count = 0 } service pop3 { executable = /usr/local/dovecot2/libexec/dovecot/pop3 process_limit = 250000 } service replicator { unix_listener replicator-doveadm { mode = 0600 user = popuser } } service stats { fifo_listener stats-mail { mode = 0600 user = popuser } } ssl_cert = </usr/local/dovecot2/etc/dovecot/certs/cert1.crt ssl_key = </usr/local/dovecot2/etc/dovecot/certs/cert1.key ssl_protocols = TLSv1.2 TLSv1.1 TLSv1 !SSLv3 !SSLv2 userdb { args = /usr/local/dovecot2/etc/dovecot/dovecot-ldap.conf driver = ldap } verbose_proctitle = yes protocol doveadm { mail_plugin_dir = /usr/local/dovecot2/lib/dovecot/ mail_plugins = quota passdb { args = /usr/local/dovecot2/etc/dovecot/dovecot-doveadm.conf driver = ldap name = } userdb { args = /usr/local/dovecot2/etc/dovecot/dovecot-doveadm.conf driver = ldap name = } } protocol lda { info_log_path = /var/log/dovecot-lda log_path = /var/log/dovecot-lda log_timestamp = "%b %d %H:%M:%S " mail_plugin_dir = /usr/local/dovecot2/lib/dovecot/ mail_plugins = quota postmaster_address = %u } protocol imap { imap_client_workarounds = mail_max_userip_connections = 100 mail_plugin_dir = /usr/local/dovecot2/lib/dovecot/ mail_plugins = quota imap_quota stats imap_stats } protocol pop3 { mail_plugin_dir = /usr/local/dovecot2/lib/dovecot/ mail_plugins = quota stats pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_enable_last = yes pop3_fast_size_lookups = yes pop3_reuse_xuidl = no pop3_uidl_format = %g } local xx.xx.xx.54 { protocol imap { ssl_cert = </usr/local/dovecot2/etc/dovecot/certs/cert1.crt ssl_key = </usr/local/dovecot2/etc/dovecot/certs/cert1.key } } local xx.xx.xx.54 { protocol pop3 { ssl_cert = </usr/local/dovecot2/etc/dovecot/certs/cert1.crt ssl_key = </usr/local/dovecot2/etc/dovecot/certs/cert1.key } } local xx.xx.xx.55 { protocol imap { ssl_cert = </usr/local/dovecot2/etc/dovecot/certs/cert2.crt ssl_key = </usr/local/dovecot2/etc/dovecot/certs/cert2.key } } local xx.xx.xx.55 { protocol pop3 { ssl_cert = </usr/local/dovecot2/etc/dovecot/certs/cert2.crt ssl_key = </usr/local/dovecot2/etc/dovecot/certs/cert2.key } } local xx.xx.xx.56 { protocol imap { ssl_cert = </usr/local/dovecot2/etc/dovecot/certs/cert3.crt ssl_key = </usr/local/dovecot2/etc/dovecot/certs/cert3.key } } local xx.xx.xx.56 { protocol pop3 { ssl_cert = </usr/local/dovecot2/etc/dovecot/certs/cert3.crt ssl_key = </usr/local/dovecot2/etc/dovecot/certs/cert3.key } } local xxx:xxx:xxx::::fa { protocol imap { ssl_cert = </usr/local/dovecot2/etc/dovecot/certs/cert1.crt ssl_key = </usr/local/dovecot2/etc/dovecot/certs/cert1.key } } local xxx:xxx:xxx::::fa { protocol pop3 { ssl_cert = </usr/local/dovecot2/etc/dovecot/certs/cert1.crt ssl_key = </usr/local/dovecot2/etc/dovecot/certs/cert1.key } } local xxx:xxx:xxx::::fb { protocol imap { ssl_cert = </usr/local/dovecot2/etc/dovecot/certs/cert2.crt ssl_key = </usr/local/dovecot2/etc/dovecot/certs/cert2.key } } local xxx:xxx:xxx::::fb { protocol pop3 { ssl_cert = </usr/local/dovecot2/etc/dovecot/certs/cert2.crt ssl_key = </usr/local/dovecot2/etc/dovecot/certs/cert2.key } } local xxx:xxx:xxx::::fc { protocol imap { ssl_cert = </usr/local/dovecot2/etc/dovecot/certs/cert3.crt ssl_key = </usr/local/dovecot2/etc/dovecot/certs/cert3.key } } local xxx:xxx:xxx::::fc { protocol pop3 { ssl_cert = </usr/local/dovecot2/etc/dovecot/certs/cert3.crt ssl_key = </usr/local/dovecot2/etc/dovecot/certs/cert3.key } }

1 0

Changes to userdb not picked up
by Tom Sommer 08 Feb '17

08 Feb '17

I have my quota limits stored in userdb and auth_cache enabled (default settings). When I change the quota limit the old limit is still cached for the user for another hour. Is there any way to prevent this from happening? Thanks -- Tom

3 3

Filenames and flags
by Carsten Czichos 08 Feb '17

08 Feb '17

Hi list, where can I find the meaning of lowercase file flags ? I found this information: http://cr.yp.to/proto/maildir.html <http://cr.yp.to/proto/maildir.html> But what does the lowercase a & d mean as in ...,S=2364,W=2411:2,Sad ? Thanx for your help !

2 1

Re: Dovecot dsync 'ssl_client_ca'
by Aki Tuomi 08 Feb '17

08 Feb '17

Please keep responses in list. rm -f /var/lib/dovecot/ssl-parameters.dat, i think it was in that dir. On 2017-02-03 17:00, Thierry wrote: > Hi, > > I have removed the '<' : > > ssl_client_ca_file = /etc/ssl/certs/GandiCA2.pem > > But now: > > doveadm: Error: Corrupted SSL parameters file in state_dir: ssl-parameters.dat - disabling SSL 360 > doveadm: Error: Couldn't initialize SSL parameters, disabling SSL > doveadm: Error: Corrupted SSL parameters file in state_dir: ssl-parameters.dat - disabling SSL 360 > doveadm: Error: Couldn't initialize SSL parameters, disabling SSL > > Any idea ? > > Thx > >> Yes. The ssl_client_ca_file is not actually expecting <, just file name. >> Aki > >> On 2017-02-03 15:13, Thierry wrote: >>> Hi, >>> >>> I have made change: >>> >>> ssl_protocols = !SSLv2 !SSLv3 >>> ssl = required >>> verbose_ssl = no >>> ssl_key = </etc/ssl/private/private.key >>> ssl_cert = </etc/ssl/certs/key.crt >>> ssl_client_ca_file = </etc/ssl/certs/GandiCA2.pem >>> >>> >>> # Create a listener for doveadm-server >>> service doveadm { >>> user = vmail >>> inet_listener { >>> port = 12345 >>> ssl= yes >>> } >>> } >>> >>> and doveadm_port = 12345 // mail_replica = tcps:server2.domain.ltd # use doveadm_port >>> >>> And now: >>> >>> Feb 03 14:11:16 doveadm(user1(a)domain.ltd): Error: sync: Couldn't initialize SSL context: Can't load CA certs from directory : error:02001024:system library:fopen:File name too long >>> Feb 03 14:11:17 doveadm: Error: Corrupted SSL parameters file in state_dir: ssl-parameters.dat - disabling SSL 360 >>> Feb 03 14:11:17 doveadm: Error: Couldn't initialize SSL parameters, disabling SSL >>> >>> Thx for your support >>> >>> >>> >>> >>> Le vendredi 3 février 2017 à 11:34:43, vous écriviez : >>> >>>> Hello, >>>> On 02/03/2017 08:51 AM, Thierry wrote: >>>>> Hello, >>>>> >>>>> Still working with my dsync pb. >>>>> I have done a clone (vmware) of my email server. >>>>> Today I have two strictly identical emails servers (server1 >>>>> (main) and server2 (bck) (except IP, hostname and mail_replica). >>>>> >>>>> The ssl config on my both server: >>>>> >>>>> ssl_protocols = !SSLv2 !SSLv3 >>>>> ssl = required >>>>> verbose_ssl = no >>>>> ssl_key = </etc/ssl/private/private.key >>>>> ssl_cert = </etc/ssl/certs/key.crt >>>>> ssl_ca = </etc/ssl/certs/GandiStandardSSLCA2.pem >>>> I think it should be ssl_client_ca_file = >>>> </etc/ssl/certs/GandiStandardSSLCA2.pem for you. >>>>> This config is working for my email client and my email web >>>>> interface ... >>>>> >>>>> Are they on the right order ? >>>>> >>>>> mail_replica = tcps:server1@domain.ltd and tcps:server2@domain.ltd >>>>> >>>>> There is trafic on my iptables rules on my both servers: >>>>> >>>>> 60 3600 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:4711 >>>>> >>>>> >>>>> >>>>> My error message from server1 (main server): >>>>> >>>>> Feb 03 08:38:08 doveadm(user1(a)domain.ltd): Error: sync: Couldn't initialize SSL context: Can't verify remote server certs without trusted CAs (ssl_client_ca_* settings) >>>>> Feb 03 08:42:35 doveadm(user2(a)domain.ltd): Error: sync: Couldn't initialize SSL context: Can't verify remote server certs without trusted CAs (ssl_client_ca_* settings) >>>>> Feb 03 08:42:35 doveadm(user3(a)domain.ltd): Error: sync: Couldn't initialize SSL context: Can't verify remote server certs without trusted CAs (ssl_client_ca_* settings) >>>>> Feb 03 08:42:35 doveadm(user4(a)domain.ltd): Error: sync: Couldn't initialize SSL context: Can't verify remote server certs without trusted CAs (ssl_client_ca_* settings) >>>>> >>>>> No logs from server2 >>>>> >>>>> Any ideas ? >>>>> >>>>> Thx for your support >>>>> >>>>> >>>

3 6

Sieve LDA Errors (Improper Saving?)
by Richard Laager 08 Feb '17

08 Feb '17

I'm getting lots of errors like this (possibly on every message delivery): imap2 dovecot: lmtp(rlaager(a)wiktel.com): Error: OU02K+gQmFhUAwAAVtfydQ : sieve: binary save: failed to create temporary file: open(/var/lib/dovecot/sieve/junk-mail.svbin.ima p2.852.) failed: Permission denied (euid=500(vmail) egid=500(vmail) missing +w perm: /var/lib/dovecot/ sieve, dir owned by 0:0 mode=0755) imap2 dovecot: lmtp(rlaager(a)wiktel.com): Error: OU02K+gQmFhUAwAAVtfydQ: sieve: The LDA Sieve plugin does not have permission to save global Sieve script binaries; global Sieve scripts like `/var/lib/dovecot/sieve/junk-mail.sieve' need to be pre-compiled using the sievec tool It's intentional in my setup that the vmail user can't write to the global sieve script directory. But it shouldn't need to, as those are already pre-compiled: rlaager@imap2:/var/lib/dovecot/sieve$ ls -la total 12 drwxr-xr-x 2 root root 4096 Nov 29 22:27 . drwxr-xr-x 3 root root 4096 Feb 6 20:39 .. lrwxrwxrwx 1 root root 53 Sep 12 01:35 junk-mail.sieve -> /usr/share/wiktel-server-mail-backend/junk-mail.sieve -rw-r--r-- 1 root root 254 Nov 29 22:27 junk-mail.svbin rlaager@imap2:/var/lib/dovecot/sieve$ ls -la /usr/share/wiktel-server-mail-backend/junk-mail.sieve -rw-r--r-- 1 root root 124 Oct 31 09:34 /usr/share/wiktel-server-mail-backend/junk-mail.sieve Note that the .svbin is from November, while the text version is from October. Even if something is looking at the date of the symlink, that's from September. So the first question is... why is Dovecot trying to write the binary file? I dug into the Pigeonhole code... I think, but am certainly not sure, that lda_sieve_open() in pigeonhole/src/plugins/lda-sieve/lda-sieve-plugin.c is the relevant function calling lda_sieve_binary_save(). At the end of the function, it has: if (!recompile) lda_sieve_binary_save(srctx, sbin, script); This seems odd to me. Why is it trying to save in the "!recompile" case? It seems like it should be saving in the "recompile" case. If I'm reading this code right, recompile is set when it loads a corrupt sieve binary script and needs to recompile from text. I could be completely off, though. Any thoughts? -- Richard

2 2

Migrating to sieve
by Adam Shostack 08 Feb '17

08 Feb '17

Hi, As I migrate to sieve, I would like to carry over the logic I had in procmail rules, which let me take all mail where I'd never sent email to that address into a final spam catchall, which I called "neversent." I see that sieve can't run external programs, and I wonder if that means I'm SOL, or is there an alternate approach that does roughly the same thing? (I understand the general security logic for that decision. I have root access on the server in question if that helps.) Thank you for any help you can provide! Adam The procmail code was: # a bunch of complex shell script to extract From: into a variable of that # name. :0: * ^TO_$ME * !? fgrep -q --ignore-case -e "$FROM" $HOME/.lbdb/m_inmail.list neversent along with a procmail-outbound setup of: :0hc | lbdb-fetchaddr -a :0 ! "$@"

2 2

Dovecot with dsync
by Nick Lekkas 07 Feb '17

07 Feb '17

Hello to all !!! I am trying to setup dsync on CentOS latest with dovecot 2.2.10 ...but does not seem to work !! I have tried to follow many guides i have found but none seem to work ! Before i mention my issues please clear me something: 1. dsynch to work needs for sure mysql ..? or can work with the default linux user scheme ..? 2. if mysql is required please where can i a working working user schema ? thanks in advance for your time ... __________ Information from ESET Endpoint Antivirus, version of virus signature database 14893 (20170206) __________ The message was checked by ESET Endpoint Antivirus. Email message - is OK http://www.eset.com

1 0

Dsync migration with shared folders
by George Dimakopoulos 06 Feb '17

06 Feb '17

Hi everyone, We discovered that the migration path from a VPS to our 2XHP replication server environment with shared folders should be: 1) Rsync all domains from the VPS to serverA. Then rsync all domains from ServerA to ServerB. ServerA & ServerB are in a identical state. 2) Create an empty directory for the shared indexes 3) Start dovecot on both machines. If we did not sync both machines then dsync could not replicate the domains that contained shared folders. What is the right migration process for domains with shared folders ? Regards, George dovecot -n ------------------------- # 2.2.27 (c0f36b0): /usr/local/etc/dovecot/dovecot.conf # Pigeonhole version 0.4.16 (fed8554) # OS: FreeBSD 11.0-RELEASE-p2 amd64 zfs auth_mechanisms = plain login auth_verbose = yes default_client_limit = 2560 default_process_limit = 512 dict { acl = mysql:/usr/local/etc/dovecot/dovecot-shared-sql.conf.ext quota = mysql:/usr/local/etc/dovecot/dovecot-dict-sql.conf.ext } doveadm_password = # hidden, use -P to show it doveadm_port = 12345 log_path = /var/log/dovecot.log mail_debug = yes mail_home = /usr/local/vhosts/mail/%d/%n mail_location = maildir:/usr/local/vhosts/mail/%d/%n:LAYOUT=fs mail_max_userip_connections = 70 mail_plugins = quota acl notify replication mail_privileged_group = vmail mail_shared_explicit_inbox = yes 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 index ihave duplicate mime foreverypart extracttext mbox_write_locks = fcntl namespace { inbox = no list = children location = maildir:/usr/local/vhosts/mail/%%d/%%n:LAYOUT=fs:INDEX=/usr/local/vhosts/indexes/%d/%n/shared/%%u:INDEXPVT=/usr/local/vhosts/indexes/%d/%n/shared/%%u prefix = shared/%%d/%%n/ separator = / subscriptions = no type = shared } namespace inbox { inbox = yes list = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / type = private } passdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { acl = vfile acl_shared_dict = proxy::acl mail_replica = tcp:mx1 quota = dict:User quota::proxy::quota quota_rule2 = Trash:storage=+100M sieve = /usr/local/vhosts/mail/%d/%n/.dovecot.sieve sieve_before = /usr/local/vhosts/sieve/before.d/ sieve_dir = /usr/local/vhosts/mail/%d/%n sieve_global_dir = /usr/local/vhosts/sieve/%d sieve_global_path = /usr/local/vhosts/sieve/%d/default.sieve } protocols = imap lmtp sieve sieve service aggregator { fifo_listener replication-notify-fifo { mode = 0666 user = vmail } unix_listener replication-notify { mode = 0666 user = vmail } } 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 config { unix_listener config { user = vmail } } service dict { unix_listener dict { mode = 0600 user = vmail } } service doveadm { inet_listener { port = 12345 } user = vmail } service imap-login { inet_listener imap { port = 143 } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } process_min_avail = 0 service_count = 1 vsz_limit = 64 M } service replicator { unix_listener replicator-doveadm { mode = 0666 } } userdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol lmtp { mail_plugins = quota acl notify replication sieve } protocol lda { mail_plugins = quota acl notify replication sieve acl postmaster_address = root } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep mail_plugins = quota acl notify replication imap_quota imap_acl } ssl_cert = ssl_key =

1 0

Dsync migration with shared folders
by Γιώργος Δημακόπουλος 06 Feb '17

06 Feb '17

Hi everyone, We discovered that the migration path from a VPS to our 2XHP replication server environment with shared folders should be: 1) Rsync all domains from the VPS to serverA. Then rsync all domains from ServerA to ServerB. ServerA & ServerB are in a identical state. 2) Create an empty directory for the shared indexes 3) Start dovecot on both machines. If we did not sync both machines then dsync could not replicate the domains that contained shared folders. What is the right migration process for domains with shared folders ? Regards, George g.dimakopoulos(a)sophimail.com dovecot -n ------------------------- # 2.2.27 (c0f36b0): /usr/local/etc/dovecot/dovecot.conf # Pigeonhole version 0.4.16 (fed8554) # OS: FreeBSD 11.0-RELEASE-p2 amd64 zfs auth_mechanisms = plain login auth_verbose = yes default_client_limit = 2560 default_process_limit = 512 dict { acl = mysql:/usr/local/etc/dovecot/dovecot-shared-sql.conf.ext quota = mysql:/usr/local/etc/dovecot/dovecot-dict-sql.conf.ext } doveadm_password = # hidden, use -P to show it doveadm_port = 12345 log_path = /var/log/dovecot.log mail_debug = yes mail_home = /usr/local/vhosts/mail/%d/%n mail_location = maildir:/usr/local/vhosts/mail/%d/%n:LAYOUT=fs mail_max_userip_connections = 70 mail_plugins = quota acl notify replication mail_privileged_group = vmail mail_shared_explicit_inbox = yes 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 index ihave duplicate mime foreverypart extracttext mbox_write_locks = fcntl namespace { inbox = no list = children location = maildir:/usr/local/vhosts/mail/%%d/%%n:LAYOUT=fs:INDEX=/ usr/local/vhosts/indexes/%d/%n/shared/%%u:INDEXPVT=/usr/ local/vhosts/indexes/%d/%n/shared/%%u prefix = shared/%%d/%%n/ separator = / subscriptions = no type = shared } namespace inbox { inbox = yes list = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / type = private } passdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { acl = vfile acl_shared_dict = proxy::acl mail_replica = tcp:mx1 quota = dict:User quota::proxy::quota quota_rule2 = Trash:storage=+100M sieve = /usr/local/vhosts/mail/%d/%n/.dovecot.sieve sieve_before = /usr/local/vhosts/sieve/before.d/ sieve_dir = /usr/local/vhosts/mail/%d/%n sieve_global_dir = /usr/local/vhosts/sieve/%d sieve_global_path = /usr/local/vhosts/sieve/%d/default.sieve } protocols = imap lmtp sieve sieve service aggregator { fifo_listener replication-notify-fifo { mode = 0666 user = vmail } unix_listener replication-notify { mode = 0666 user = vmail } } 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 config { unix_listener config { user = vmail } } service dict { unix_listener dict { mode = 0600 user = vmail } } service doveadm { inet_listener { port = 12345 } user = vmail } service imap-login { inet_listener imap { port = 143 } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } process_min_avail = 0 service_count = 1 vsz_limit = 64 M } service replicator { unix_listener replicator-doveadm { mode = 0666 } } userdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol lmtp { mail_plugins = quota acl notify replication sieve } protocol lda { mail_plugins = quota acl notify replication sieve acl postmaster_address = root } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep mail_plugins = quota acl notify replication imap_quota imap_acl } ssl_cert = ssl_key =

1 0

Compiling Dovecot on Solaris 10
by Mantas Gegužis 06 Feb '17

06 Feb '17

Hello, I am tying to compile Dovecot 2.2.27 on Solaris 10, and I get this error: test-ioloop.c: In function `test_ioloop_pending_io': test-ioloop.c:188: error: size of array `type name' is negative My configuration is like this: Install prefix . : /usr/local File offsets ... : 64bit I/O polling .... : poll I/O notifys .... : none SSL ............ : yes (OpenSSL) GSSAPI ......... : no passdbs ........ : static passwd passwd-file shadow pam checkpassword dcrypt ..........: yes : -bsdauth -sia -ldap -sql -vpopmail userdbs ........ : static prefetch passwd passwd-file checkpassword : -ldap -sql -vpopmail -nss SQL drivers .... : : -pgsql -mysql -sqlite -cassandra Full text search : squat : -lucene -solr Last version that I have compiled was 2.2.24, version 2.2.25 failed with error: In file included from guid.c:6: sha1.h:80: error: static or type qualifiers in abstract declarator Is there anyone who can help me? -- Pagarbiai Mantas Gegužis VU Informacinių technologijų taikymo centras tel. 8 5 236 6208

6 10

Dsync migration with shared folders
by George Dimakopoulos 06 Feb '17

06 Feb '17

Hi everyone, We discovered that the migration path from a VPS to our 2XHP replication server environment with shared folders should be: 1) Rsync all domains from the VPS to serverA. Then rsync all domains from ServerA to ServerB. ServerA & ServerB are in a identical state. 2) Create an empty directory for the shared indexes 3) Start dovecot on both machines. If we did not sync both machines then dsync could not replicate the domains that contained shared folders. What is the right migration process for domains with shared folders ? Regards, George dovecot -n ------------------------- # 2.2.27 (c0f36b0): /usr/local/etc/dovecot/dovecot.conf # Pigeonhole version 0.4.16 (fed8554) # OS: FreeBSD 11.0-RELEASE-p2 amd64 zfs auth_mechanisms = plain login auth_verbose = yes default_client_limit = 2560 default_process_limit = 512 dict { acl = mysql:/usr/local/etc/dovecot/dovecot-shared-sql.conf.ext quota = mysql:/usr/local/etc/dovecot/dovecot-dict-sql.conf.ext } doveadm_password = # hidden, use -P to show it doveadm_port = 12345 log_path = /var/log/dovecot.log mail_debug = yes mail_home = /usr/local/vhosts/mail/%d/%n mail_location = maildir:/usr/local/vhosts/mail/%d/%n:LAYOUT=fs mail_max_userip_connections = 70 mail_plugins = quota acl notify replication mail_privileged_group = vmail mail_shared_explicit_inbox = yes 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 index ihave duplicate mime foreverypart extracttext mbox_write_locks = fcntl namespace { inbox = no list = children location = maildir:/usr/local/vhosts/mail/%%d/%%n:LAYOUT=fs:INDEX=/usr/local/vhosts/indexes/%d/%n/shared/%%u:INDEXPVT=/usr/local/vhosts/indexes/%d/%n/shared/%%u prefix = shared/%%d/%%n/ separator = / subscriptions = no type = shared } namespace inbox { inbox = yes list = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / type = private } passdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { acl = vfile acl_shared_dict = proxy::acl mail_replica = tcp:mx1 quota = dict:User quota::proxy::quota quota_rule2 = Trash:storage=+100M sieve = /usr/local/vhosts/mail/%d/%n/.dovecot.sieve sieve_before = /usr/local/vhosts/sieve/before.d/ sieve_dir = /usr/local/vhosts/mail/%d/%n sieve_global_dir = /usr/local/vhosts/sieve/%d sieve_global_path = /usr/local/vhosts/sieve/%d/default.sieve } protocols = imap lmtp sieve sieve service aggregator { fifo_listener replication-notify-fifo { mode = 0666 user = vmail } unix_listener replication-notify { mode = 0666 user = vmail } } 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 config { unix_listener config { user = vmail } } service dict { unix_listener dict { mode = 0600 user = vmail } } service doveadm { inet_listener { port = 12345 } user = vmail } service imap-login { inet_listener imap { port = 143 } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } process_min_avail = 0 service_count = 1 vsz_limit = 64 M } service replicator { unix_listener replicator-doveadm { mode = 0666 } } userdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol lmtp { mail_plugins = quota acl notify replication sieve } protocol lda { mail_plugins = quota acl notify replication sieve acl postmaster_address = root } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep mail_plugins = quota acl notify replication imap_quota imap_acl } ssl_cert = ssl_key =

1 0

dovecot/auth CPU spikes
by nicolas＠andrillon.net 05 Feb '17

05 Feb '17

Hi All, I have recently moved by webmail server from a VPS to a hosted dedicated server running Ubuntu 16.04. Everything is fine except that login is particularly and consistently long (around 4-5 seconds). I have noticed that the process dovecot/auth seems to eat all of the resources of one of the cores available on the host during login. The authentication backend is a postgres database which is running absolutely fine. I have been scavenging on the dovecot mailing list for some time but I have not been able to find a solution to my problem so decided to send this bottle to the sea. Here is my config: $ sudo dovecot -n # 2.2.22 (fe789d2): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.13 (7b14904) # OS: Linux 3.14.32-xxxx-grs-ipv6-64 x86_64 Ubuntu 16.04.1 LTS ext4 auth_cache_size = 10 M auth_mechanisms = plain login default_internal_user = vmail first_valid_uid = 0 mail_location = maildir:/home/data/vmail/%d/%n mail_plugins = " fts fts_solr" mail_privileged_group = vmail maildir_stat_dirs = yes 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 index ihave duplicate mime foreverypart extracttext namespace inbox { inbox = yes location = mailbox Archive { auto = subscribe special_use = Archive } mailbox Drafts { auto = subscribe special_use = Drafts } mailbox Junk { auto = subscribe special_use = Junk } mailbox Sent { auto = subscribe special_use = Sent } mailbox "Sent Messages" { special_use = Sent } mailbox Trash { auto = subscribe special_use = Trash } prefix = } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { antispam_backend = pipe antispam_mail_notspam = learn_ham antispam_mail_sendmail = /usr/bin/rspamc antispam_mail_sendmail_args = -h;localhost:11334;-P;q1 antispam_mail_spam = learn_spam antispam_spam = Junk antispam_trash = Trash fts = solr fts_solr = break-imap-search url=http://localhost:8080/solr/ sieve = file:~/sieve;active=~/.dovecot.sieve sieve_before = /var/lib/dovecot/sieve.d/ } postmaster_address = postmaster(a)domain.net protocols = imap lmtp sieve pop3 service auth-worker { unix_listener auth-worker { user = vmail } user = vmail } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { group = vmail mode = 0660 user = vmail } user = vmail } service imap-login { inet_listener imap { port = 0 } service_count = 1 } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0666 user = postfix } user = vmail } service pop3-login { inet_listener pop3 { port = 0 } } ssl = required ssl_cert =

1 2

Re: Panic error from dovecot 2.2.27 using libressl 2.4.5 (cross-posting at GitHub)
by Aki Tuomi 05 Feb '17

05 Feb '17

Sorry for finnish. I think it might also work with libtool flag -static in Makefile.am LDADD flags.---Aki TuomiDovecot oy -------- Original message --------From: Aki Tuomi <aki.tuomi(a)dovecot.fi> Date: 05/02/2017 20:21 (GMT+02:00) To: Dovecot Mailing List <dovecot(a)dovecot.org> Subject: Re: Panic error from dovecot 2.2.27 using libressl 2.4.5 (cross-posting at GitHub) jos ldflags laittaa -static vivun niin se preferoi .a filedn linkkausta. ---Aki TuomiDovecot oy -------- Original message --------From: Timo Sirainen <tss(a)iki.fi> Date: 05/02/2017 20:19 (GMT+02:00) To: Dovecot Mailing List <dovecot(a)dovecot.org> Subject: Re: Panic error from dovecot 2.2.27 using libressl 2.4.5 (cross-posting at GitHub) On 5 Feb 2017, at 19.58, Timo Sirainen <tss(a)iki.fi> wrote: > > On 5 Feb 2017, at 19.49, Timo Sirainen <tss(a)iki.fi> wrote: >> >> On 4 Feb 2017, at 20.03, Ruga <ruga(a)protonmail.com> wrote: >>> >>> https://github.com/libressl-portable/portable/issues/278 >> >> I've no idea why that would happen. The only idea I had got rejected by someone. > > Oh, that's with OSX. I think that's the reason. Nothing to do with libressl. I'll see if I can reproduce it, as soon as I can figure out how to get a newer OpenSSL installed to my OSX.. Attached patch seems to work.

1 0

Re: Panic error from dovecot 2.2.27 using libressl 2.4.5 (cross-posting at GitHub)
by Aki Tuomi 05 Feb '17

05 Feb '17

jos ldflags laittaa -static vivun niin se preferoi .a filedn linkkausta. ---Aki TuomiDovecot oy -------- Original message --------From: Timo Sirainen <tss(a)iki.fi> Date: 05/02/2017 20:19 (GMT+02:00) To: Dovecot Mailing List <dovecot(a)dovecot.org> Subject: Re: Panic error from dovecot 2.2.27 using libressl 2.4.5 (cross-posting at GitHub) On 5 Feb 2017, at 19.58, Timo Sirainen <tss(a)iki.fi> wrote: > > On 5 Feb 2017, at 19.49, Timo Sirainen <tss(a)iki.fi> wrote: >> >> On 4 Feb 2017, at 20.03, Ruga <ruga(a)protonmail.com> wrote: >>> >>> https://github.com/libressl-portable/portable/issues/278 >> >> I've no idea why that would happen. The only idea I had got rejected by someone. > > Oh, that's with OSX. I think that's the reason. Nothing to do with libressl. I'll see if I can reproduce it, as soon as I can figure out how to get a newer OpenSSL installed to my OSX.. Attached patch seems to work.

1 0

Panic error from dovecot 2.2.27 using libressl 2.4.5 (cross-posting at GitHub)
by Ruga 05 Feb '17

05 Feb '17

https://github.com/libressl-portable/portable/issues/278

2 3

Dovecot v2.2.22 (fe789d2) starting up for imap, pop3 (core dumps disabled)
by baskar anand 05 Feb '17

05 Feb '17

Always I have the following lines in my mail.log (at startup and service restart) dovecot: master: Warning: Killed with signal 15 (by pid=3156 uid=0 code=kill) dovecot: log: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill) dovecot: master: Dovecot v2.2.22 (fe789d2) starting up for imap, pop3 (core dumps disabled) dovecot -n output is below: # 2.2.22 (fe789d2): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.13 (7b14904) # OS: Linux 4.4.0-31-generic x86_64 Ubuntu 16.04.1 LTS auth_mechanisms = plain login mail_location = mbox:~/mail:INBOX=/var/mail/%u mail_privileged_group = mail 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 } protocols = " imap pop3" service auth-worker { user = root } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } ssl_cert =

2 1

Re: Compiling Dovecot on Solaris 10
by Joseph Tam 03 Feb '17

03 Feb '17

> I don't have problems building 2.2.27 on Solaris 10 > (using Sun Workshop compiler 5.11). ... and I don't have problems with Solaris10/gcc, but I don't have as many options as you do. Joseph Tam <jtam.home(a)gmail.com>

1 0

Crash while reading compressed mbox: Panic: file istream-zlib.c: line 416 (i_stream_zlib_seek): assertion failed: (ret == -1)
by Anton Yuzhaninov 03 Feb '17

03 Feb '17

Hello, I use mbox compressed by gzip as read-only folder (using zlib plugin). This setup worked for a while, but doesn't work with latest dovecot version (2.2.27). I have error in logs: Panic: file istream-zlib.c: line 416 (i_stream_zlib_seek): assertion failed: (ret == -1) I can see list of messages in MUA but can't ready body of any message. I've tried to delete indexes, but it doesn't help. Backtrace looks like: (gdb) bt #0 0x0000000011266a4a in thr_kill () from /lib/libc.so.7 #1 0x0000000011266a1b in raise () from /lib/libc.so.7 #2 0x0000000011266989 in abort () from /lib/libc.so.7 #3 0x0000000010ef3850 in default_fatal_finish (type=LOG_TYPE_PANIC, status=0) at failures.c:201 #4 0x0000000010ef5167 in i_internal_fatal_handler (ctx=0x7fffffffe010, format=0x1222cf93 "file %s: line %d (%s): assertion failed: (%s)", args=0x7fffffffdff0) at failures.c:670 #5 0x0000000010ef3e5f in i_panic (format=0x1222cf93 "file %s: line %d (%s): assertion failed: (%s)") at failures.c:275 #6 0x0000000012229238 in i_stream_zlib_seek (stream=0x118dd300, v_offset=56248, mark=false) at istream-zlib.c:416 #7 0x0000000010f05e48 in i_stream_skip (stream=0x118dd370, count=32489) at istream.c:278 #8 0x0000000010f057ba in i_stream_seek (stream=0x118dd370, v_offset=56248) at istream.c:300 #9 0x0000000010b17702 in istream_raw_mbox_get_body_size (stream=0x118ec870, expected_body_size=36695, body_size_r=0x7fffffffe2a0) at istream-raw-mbox.c:612 #10 0x0000000010b2b0aa in mbox_sync_read_next_mail (sync_ctx=0x7fffffffe418, mail_ctx=0x7fffffffe270) at mbox-sync.c:162 #11 0x0000000010b2964a in mbox_sync_loop (sync_ctx=0x7fffffffe418, mail_ctx=0x7fffffffe270, partial=false) at mbox-sync.c:1057 #12 0x0000000010b290cb in mbox_sync_do (sync_ctx=0x7fffffffe418, flags=MBOX_SYNC_UNDIRTY) at mbox-sync.c:1642 #13 0x0000000010b28999 in mbox_sync_int (mbox=0x118ee040, flags=MBOX_SYNC_UNDIRTY, lock_id=0x7fffffffe640) at mbox-sync.c:1969 #14 0x0000000010b280ea in mbox_sync (mbox=0x118ee040, flags=MBOX_SYNC_UNDIRTY) at mbox-sync.c:2022 #15 0x0000000010b28c9e in mbox_storage_sync_init (box=0x118ee040, flags=65) at mbox-sync.c:2071 #16 0x0000000010acc280 in mailbox_sync_init (box=0x118ee040, flags=65) at mail-storage.c:1740 #17 0x0000000010acb45d in mailbox_sync (box=0x118ee040, flags=65) at mail-storage.c:1788 #18 0x0000000000418cf5 in select_open (ctx=0x1184a1a8, mailbox=0x11816f50 "old/Example/INBOX.gz", readonly=false) at cmd-select.c:303 #19 0x0000000000418937 in cmd_select_full (cmd=0x1184a040, readonly=false) at cmd-select.c:426 #20 0x00000000004190f7 in cmd_select (cmd=0x1184a040) at cmd-select.c:435 #21 0x0000000000423b00 in command_exec (cmd=0x1184a040) at imap-commands.c:181 #22 0x00000000004220c0 in client_command_input (cmd=0x1184a040) at imap-client.c:986 -- Best Regards, Anton Yuzhaninov

1 0

Revision-proof archiving
by Paul Atreides 03 Feb '17

03 Feb '17

Hi, I am interested in the "Dovecot Email Archive" solution. Does anyone know if it is suitable revision-proof archiving? Is it available for smaller companies? I tried to contact people at dovecot.fi but I haven’t gotten any response yet. Thanks Regards,

2 1

dsync backup public namespace - how?
by Tobias Kirchhofer 03 Feb '17

03 Feb '17

Hello, We just celebrated the launch of our new mailserver setup (Dovecot and Postfix). Really nice! Now we want to change our quickfix backup with rsync to dsync. For mailder backup of users this was an easy task: dsync -v -f -u "${user}" backup "maildir:${destination}" (local file path destination) We use many public folder with ACL and now we are wondering how we can backup these folder in a similar manner: a) dsync -u doveadm(a)domain.com backup -n Namespacename "maildir:/var/vmail-backup/backup/public" or b) dsync -v -u doveadm(a)domain.com -N backup "maildir:${destination} But this is not working. a) does nothing, no error b) Error message: doveadm(doveadm(a)domain.com): Fatal: -N parameter requires syncing with remote host Any ideas? # dovecot --version 2.2.13 -- Tobias Kirchhofer tobias(a)kirchhofer.net

1 0

Dovecot auth-worker error after cram-md5 auth
by Poliman - Serwis 03 Feb '17

03 Feb '17

I set up cram-md5 using this tutorial https://wiki2.dovecot.org/HowTo/CRAM-MD5 in /etc/dovecot/dovecot.conf in passdb code block: listen = *,[::] protocols = imap pop3 #auth_mechanisms = plain login cram-md5 auth_mechanisms = cram-md5 plain login #dodana nizej linia ssl = required disable_plaintext_auth = yes log_timestamp = "%Y-%m-%d %H:%M:%S " mail_privileged_group = vmail postmaster_address = postmaster(a)vps342401.ovh.net ssl_cert = </etc/postfix/smtpd.cert ssl_key = </etc/postfix/smtpd.key ssl_protocols = !SSLv2 !SSLv3 !TLSv1 !TLSv1.1 ssl_cipher_list = ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384[image: :D]HE-RSA-AES128-GCM-SHA256[image: :D]HE-DSS-AES$ ssl_prefer_server_ciphers = yes ssl_dh_parameters_length = 2048 mail_max_userip_connections = 100 passdb { # args = /etc/dovecot/dovecot-sql.conf # driver = sql driver = passwd-file args = scheme=cram-md5 /etc/dovecot/cram-md5.pwd } userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } Of course I created cram-md5.pwd file. All mails go out and come nicely. But after I want to do default settings by commented out these two lines: driver = passwd-file args = scheme=cram-md5 /etc/dovecot/cram-md5.pwd and uncomment # args = /etc/dovecot/dovecot-sql.conf # driver = sql I can't send emails - I use Thunderbird - get error "logging on server mail.example.com not work out". Error in logs: dovecot: auth-worker(22698): Error: Auth worker sees different passdbs/userdbs than auth server. dovecot: auth: Error: read(anvil-auth-penalty) failed: EOF Is it possible that hashed password from cram-md5.pwd file was written to database (if yes then where - I have ISPconfig)? I wasn't change any userdb {} block and this second userdb block has this same lines like default settings in passdb block. -- *Pozdrawiam / Best Regards* *Piotr Bracha* *tel. 534 555 877* *serwis(a)poliman.pl <serwis(a)poliman.pl>*

4 25

Dovecot dsync 'ssl_client_ca'
by Thierry 03 Feb '17

03 Feb '17

Hello, Still working with my dsync pb. I have done a clone (vmware) of my email server. Today I have two strictly identical emails servers (server1 (main) and server2 (bck) (except IP, hostname and mail_replica). The ssl config on my both server: ssl_protocols = !SSLv2 !SSLv3 ssl = required verbose_ssl = no ssl_key = </etc/ssl/private/private.key ssl_cert = </etc/ssl/certs/key.crt ssl_ca = </etc/ssl/certs/GandiStandardSSLCA2.pem This config is working for my email client and my email web interface ... Are they on the right order ? mail_replica = tcps:server1@domain.ltd and tcps:server2@domain.ltd There is trafic on my iptables rules on my both servers: 60 3600 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 tcp dpt:4711 My error message from server1 (main server): Feb 03 08:38:08 doveadm(user1(a)domain.ltd): Error: sync: Couldn't initialize SSL context: Can't verify remote server certs without trusted CAs (ssl_client_ca_* settings) Feb 03 08:42:35 doveadm(user2(a)domain.ltd): Error: sync: Couldn't initialize SSL context: Can't verify remote server certs without trusted CAs (ssl_client_ca_* settings) Feb 03 08:42:35 doveadm(user3(a)domain.ltd): Error: sync: Couldn't initialize SSL context: Can't verify remote server certs without trusted CAs (ssl_client_ca_* settings) Feb 03 08:42:35 doveadm(user4(a)domain.ltd): Error: sync: Couldn't initialize SSL context: Can't verify remote server certs without trusted CAs (ssl_client_ca_* settings) No logs from server2 Any ideas ? Thx for your support -- Cordialement, Thierry e-mail : lenaigst(a)maelenn.org PGP Key: 0xB7E3B9CD

3 4

Re: Dovecot performance and proxy loops with IPv6
by Daniel Betz 03 Feb '17

03 Feb '17

Ok, got it. change imap-login and pop-login to these like showed in dovocot wiki for high-performance login mode. service imap-login { chroot = login service_count = 0 client_limit = 600 process_limit = 100 process_min_avail = 16 } service pop3-login { chroot = login service_count = 0 client_limit = 600 process_limit = 100 process_min_avail = 16 }

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postfix/smtpd[725]: fatal: no SASL authentication mechanisms
by Poliman - Serwis 03 Feb '17

03 Feb '17

I haven't doveadm logs in /var/log/. Are they default in another place or maybe should I turn on something? My config (default passdb block and auth_mechanisms, nothing more changed): root@vps342401:/etc/dovecot# doveconf -n # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.13.0-100-generic x86_64 Ubuntu 14.04.5 LTS auth_mechanisms = plain login listen = *,[::] log_timestamp = "%Y-%m-%d %H:%M:%S " mail_max_userip_connections = 100 mail_plugins = " quota" mail_privileged_group = vmail passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } plugin { quota = dict:user::file:/var/vmail/%d/%n/.quotausage sieve = /var/vmail/%d/%n/.sieve sieve_max_redirects = 25 } postmaster_address = postmaster(a)vps342401.ovh.net protocols = imap pop3 service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = vmail mode = 0600 user = vmail } user = root } service imap-login { client_limit = 1000 process_limit = 512 } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } ssl = required ssl_cert = </etc/postfix/smtpd.cert ssl_cipher_list = ECDHE-RSA-AES128-GCM-SHA256:EC DHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDH E-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS- AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE- ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128- SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE- RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128- SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA- AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128- GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256: AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:! eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3- SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA ssl_dh_parameters_length = 2048 ssl_key = </etc/postfix/smtpd.key ssl_prefer_server_ciphers = yes ssl_protocols = !SSLv2 !SSLv3 !TLSv1 !TLSv1.1 userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } protocol imap { mail_plugins = quota imap_quota } protocol pop3 { mail_plugins = quota pop3_uidl_format = %08Xu%08Xv } protocol lda { mail_plugins = sieve quota postmaster_address = webmaster@localhost } protocol lmtp { mail_plugins = quota sieve postmaster_address = webmaster@localhost } And my logs: Error from mail.err: Feb 1 09:50:01 vps342401 postfix/smtpd[699]: fatal: no SASL authentication mechanisms Feb 1 09:51:02 vps342401 postfix/smtpd[724]: fatal: no SASL authentication mechanisms Feb 1 09:51:02 vps342401 postfix/smtpd[725]: fatal: no SASL authentication mechanisms Feb 1 09:52:21 vps342401 postfix/smtps/smtpd[773]: fatal: no SASL authentication mechanisms Error from syslog: Feb 1 09:52:21 vps342401 postfix/smtps/smtpd[773]: connect from host9323131.internet.3s.com[12.34.45.56] Feb 1 09:52:21 vps342401 postfix/smtps/smtpd[773]: fatal: no SASL authentication mechanisms Feb 1 09:52:22 vps342401 postfix/master[29133]: warning: process /usr/lib/postfix/smtpd pid 773 exit status 1 Feb 1 09:52:22 vps342401 postfix/master[29133]: warning: /usr/lib/postfix/smtpd: bad command startup -- throttling Feb 1 09:53:01 vps342401 CRON[777]: (root) CMD (/usr/local/ispconfig/server/server.sh 2>&1 | while read line; do echo `/bin/date` "$line" >> /var/log/ispconfig/cron.log; do ne) Feb 1 09:53:01 vps342401 CRON[778]: (root) CMD (/usr/local/ispconfig/server/cron.sh 2>&1 | while read line; do echo `/bin/date` "$line" >> /var/log/ispconfig/cron.log; done ) Is there any strange thing in these config lines? -- *Pozdrawiam / Best Regards* *Piotr Bracha* *tel. 534 555 877* *serwis(a)poliman.pl <serwis(a)poliman.pl>*

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Dovecot, Postfix, and SASL AUTH EXTERNAL
by Matt Horan 03 Feb '17

03 Feb '17

Hey folks, I've been using the ever popular Dovecot and Postfix combo for years. A while back I also introduced mutual TLS for mail clients to Dovecot and Postfix. I achieved this by a custom checkpassword script and SASL AUTH EXTERNAL for IMAP. This all worked great with clients like Thunderbird, which can be configured to use mutual TLS and SASL EXTERNAL for IMAP, and mutual TLS with no additional authentication for SMTP. However, I found that other mail clients, in particular K-9 mail on Android, [1] are not compatible with this configuration. I've been patching K-9 mail to work around this issue for some time now. If I configure K-9 to behave like Thunderbird when sending messages via SMTP, all is well. However, there's been some activity on an issue [2] which suggests some changes may be upcoming which will be incompatible with my patch. Without my patch, K-9 tries to auth with Postfix via AUTH EXTERNAL after presenting its client certificate. Despite configuring Postfix to prefer certificates before SASL, Postfix forwards the authentication request to Dovecot, which rejects it without even trying my checkpassword script. With my patch, K-9 simply initiates an SMTP connection without any additional authentication when mutual TLS is used. This behavior is similar to Thunderbird. The K-9 maintainers do not seem interested in merging this behavior into mainline. I can't seem to get Postfix to ignore the SASL failures in the case of successful mutual TLS. I want to use SASL authentication as a fallback from untrusted clients, where I use a combination of password and one time code. Even if Dovecot did not reject the AUTH EXTERNAL request from Postfix, I'm not sure how it could determine whether a valid client certificate were presented to Postfix, unless some additional information were passed along in the SASL request. I'd love to hear any thoughts from the community on how to move forward here. Should I pressure the K-9 maintainers to behave more like other clients? Would it make sense to extend the SASL interface in some way such that Dovecot could handle an EXTERNAL request from Postfix? Or should Postfix simply ignore SASL EXTERNAL based on the configured authentication mechanism order? Thanks, Matt [1] https://github.com/k9mail/k-9/ [2] https://github.com/k9mail/k-9/issues/793 -- Matt Horan matt(a)matthoran.com http://matthoran.com/

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