- dovecot - dovecot.org

[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.

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[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 ____________________________________________________________________________________________________________

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[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. --

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[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

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[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

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[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?

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[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

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[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

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[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

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[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

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