December 2013 - dovecot

[Dovecot] zlib plugin question
by Przemysław Orzechowski 19 Dec '13

19 Dec '13

Hi Is it possible to compress incoming mails delivered via dovecots LDA when using dovecot --version 1.2.9 or do i have to compress them via cron?

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[Dovecot] problem with password in a changing scenario
by Angel Luis Mateo Martinez 19 Dec '13

19 Dec '13

Hello, I'm having a problem with with password changing. According to http://wiki2.dovecot.org/Authentication/Caching, I understand "normal scenario" and "Using old cached password scenario", but I'm having a problem with the "Early change scenario". I understand that in this case, if in step 4 user tries password Y, then this password is not tried again and login fails. But if the user tries another password Z, then is it test it? Or does it directly fail? I think that it is directly failing. And here is my problem... I am using dovecot with a ldap backend and another pam backend. The first one is users connecting with an email client. The other one applies when the ldap backend fails and it is use for connections from our webmail, which is integrated in our CAS SSO environment (it has running an imap proxy too). Sometimes (the only scenari we were able to reproduce is with users that for some reason has two SSO sessions opened) dovecot receives an invalid CAS ticket, then authentication fails, and no newer tickets are tried until cache is clean. That's why I think that in this scenario another Z password is even tried. Any idea? -- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de la Información y las Comunicaciones Aplicadas (ATICA) http://www.um.es/atica Tfo: 868889150 Fax: 868888337

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[Dovecot] letters local filter duplicated
by John Smith 18 Dec '13

18 Dec '13

two servers with replicated master/master. dovecot.conf = http://pastebin.com/jVnvyWZM with this setup letters processed local filter duplicated. ie when the mail client receives a letter begins processing using rules (filters) to move the letters in a different folder. summarized in this folder is two duplicate letters. if you disable the filter, the message is not duplicated. But does not move to another location. -- Best Regards, Evgeny Senior System Administrator OOO "Vaz Service Hurley"

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[Dovecot] Size detection/replair does not work with zlib
by Roland Rosenfeld 18 Dec '13

18 Dec '13

Hi! Usually dovecot auto detects or repairs the size of a maildir message. So I can place a message named "foo" in the cur directory and dovecot uses it. Now I tried the same with a zlib compressed message but here dovecot doesn't recognize/repair the size of the message. When I access this folder via IMAP the connection is diconnected and in dovecot logs I see the following error messages: Error: Cached message size smaller than expected (805 < 2666) Error: Corrupted index cache file /somedir/dovecot.index.cache: Broken physical size for mail UID 23 Error: read() failed: Input/output error (FETCH for mailbox INBOX UID 23) Disconnected: Internal error occurred. Refer to server log for more information. [2013-12-12 10:54:18] in=321 out=1977 As you can see in the first line, dovecot does know the compressed size of the file (805) as well as the uncompressed size (2666), but it isn't able to repair its index for this. If I modify the setup a little with a standard file naming but with a wrong file size in S-flag (compressed size instead of uncompressed size), the log entries become stranger: Error: Cached message size smaller than expected (805 < 2666) Error: Maildir filename has wrong S value, renamed the file from /somedir/cur/1386772057.M152553P9709.host,S=805:2, to /somedir/cur/1386772057.M152553P9709.host,S=805:2, So here dovecot detects the wrong S value, but instead of fixing it by using the uncompressed size, it renames to the same file name as before... All the above was tested with dovecot 2.1.17. We did a short cross test with 2.2.9 which gives somewhat different error messages, but also isn't able to detect/repair the (uncompressed) file size: Error: Cached message size smaller than expected (805 < 2666) Error: Corrupted index cache file /somedir/dovecot.index.cache: Broken physical size for mail UID 23 Error: read(zlib(/somedir/cur/foo)) failed: Invalid argument We also noticed that on both dovecot versions after trying to access the above file, dovecot.index.cache is always deleted and not rebuild... Is all this intended behavior? It sounds different to the standard behavior of dovecot, that repairs broken folders if possible... Ciao Roland

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[Dovecot] configure lmtp to deliver to email addresses case insensitively
by Adrian Zaugg 17 Dec '13

17 Dec '13

Dear List Using dovecot 2.1.7 with LMTP and exim4 I want to accept local parts regardless of their case. Exim does all virtual alias handling and delivers the messages to dovecot LMTP addressed to the right mailbox name. This works well except for addresses which do not need to be resolved by exim and which do have the "wrong" case in the local part. For example: There is a mailbox and a user on the mailsystem "example.org" called "user". Mails to "user(a)example.org" get delivered just as they should. If an incoming message is addressed to "USER(a)example.org" with upper case local part, exim passes the message to LMTP with the case unaltered (RFC 2821 conform), but LMTP fails with: LMTP error after RCPT TO:<USER(a)example.org>: 550 5.1.1 <USER(a)example.org> User doesn't exist: USER(a)example.org How can I tell dovecot to deliver "USER" to the mailbox "user" aswell? Thank you for your help. Best regards, Adrian. (I have tried to use %Ln and %Lu in mail_location setting with no success.)

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[Dovecot] Dovecot proxy and Postfix SASL
by Andreas Kasenides 17 Dec '13

17 Dec '13

Can somebody please verify that currently (v 2.2.9) SMTP AUTH using SASL from Postfix with Dovecot proxy is still not supported as discussed in these threads (especially the first one)? http://www.dovecot.org/list/dovecot/2012-August/067977.html http://www.dovecot.org/list/dovecot/2011-May/059107.html As I understand it is possible to use saslauthd to do this by using the remote imap option (rimap). Such a facility is important since I am attempting to separate the outward facing servers (dovecot proxy, postfix relay) that have no knowledge of user databases from the backends. thanx Andreas

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[Dovecot] Accessing plain text password from memory
by Stanislas SABATIER 17 Dec '13

17 Dec '13

Is there a way to retrieve the client's password in plain text from memory ? I don't store the password in plain text in my postgreSQL but I need it when the client is connected to make crypto computation. If I write a plugin to do the job, how could I retrieve the plain text password from master ? Thank you for your help, Regards, Stan. --------------------------------------------------------------- Stanislas SABATIER s.sabatier(a)pobox.com ---------------------------------------------------------------

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[Dovecot] Postfix + Dovecot & mail-stack-delivery Outlook Problem
by Sami Mäntysaari 16 Dec '13

16 Dec '13

Hello all readers of the list, I wish to get Microsoft Outlook 2010 workin with mail-stack-delivery setup. Logs when trying to setup accaunt in Microsoft Outlook 2010: ec 14 22:38:31 ip-172-31-7-147 dovecot: imap-login: Disconnected: Too many invalid commands (no auth attempts): rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2 Dec 14 22:38:31 ip-172-31-7-147 dovecot: pop3-login: Disconnected (no auth attempts): rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2 Dec 14 22:38:31 ip-172-31-7-147 dovecot: pop3-login: Disconnected (no auth attempts): rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2, TLS Dec 14 22:38:31 ip-172-31-7-147 dovecot: imap-login: Disconnected (no auth attempts): rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2, TLS Dec 14 22:38:32 ip-172-31-7-147 dovecot: pop3-login: Aborted login (no auth attempts): rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2 Dec 14 22:38:33 ip-172-31-7-147 dovecot: imap-login: Disconnected (no auth attempts): rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2, TLS Dec 14 22:38:33 ip-172-31-7-147 dovecot: imap-login: Disconnected (no auth attempts): rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2 Dec 14 22:39:17 ip-172-31-7-147 dovecot: pop3-login: Disconnected (no auth attempts): rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2, TLS handshaking: Disconnected Dec 14 22:39:18 ip-172-31-7-147 dovecot: imap-login: Disconnected (no auth attempts): rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2, TLS handshaking: Disconnected Dec 14 22:39:22 ip-172-31-7-147 postfix/submission/smtpd[8237]: connect from unknown[2001:470:28:743:4923:c01c:c89a:567a] Dec 14 22:39:22 ip-172-31-7-147 postfix/submission/smtpd[8237]: lost connection after UNKNOWN from unknown[2001:470:28:743:4923:c01c:c89a:567a] Dec 14 22:39:22 ip-172-31-7-147 postfix/submission/smtpd[8237]: disconnect from unknown[2001:470:28:743:4923:c01c:c89a:567a] Dec 14 22:39:22 ip-172-31-7-147 postfix/submission/smtpd[8237]: connect from cable-tku-58c3cc-203.dhcp.inet.fi[88.195.204.203] Dec 14 22:39:23 ip-172-31-7-147 postfix/submission/smtpd[8237]: lost connection after UNKNOWN from cable-tku-58c3cc-203.dhcp.inet.fi[88.195.204.203] Dec 14 22:39:23 ip-172-31-7-147 postfix/submission/smtpd[8237]: disconnect from cable-tku-58c3cc-203.dhcp.inet.fi[88.195.204.203] Dec 14 22:39:23 ip-172-31-7-147 postfix/submission/smtpd[8239]: connect from unknown[2001:470:28:743:4923:c01c:c89a:567a] Dec 14 22:39:23 ip-172-31-7-147 postfix/submission/smtpd[8237]: connect from cable-tku-58c3cc-203.dhcp.inet.fi[88.195.204.203] Dec 14 22:39:24 ip-172-31-7-147 postfix/submission/smtpd[8239]: lost connection after STARTTLS from unknown[2001:470:28:743:4923:c01c:c89a:567a] Dec 14 22:39:24 ip-172-31-7-147 postfix/submission/smtpd[8239]: disconnect from unknown[2001:470:28:743:4923:c01c:c89a:567a] Dec 14 22:39:24 ip-172-31-7-147 postfix/submission/smtpd[8237]: lost connection after STARTTLS from cable-tku-58c3cc-203.dhcp.inet.fi[88.195.204.203] Dec 14 22:39:24 ip-172-31-7-147 postfix/submission/smtpd[8237]: disconnect from cable-tku-58c3cc-203.dhcp.inet.fi[88.195.204.203] Dec 14 22:39:24 ip-172-31-7-147 postfix/submission/smtpd[8239]: connect from unknown[2001:470:28:743:4923:c01c:c89a:567a] Dec 14 22:39:24 ip-172-31-7-147 postfix/submission/smtpd[8237]: connect from cable-tku-58c3cc-203.dhcp.inet.fi[88.195.204.203] Dec 14 22:39:24 ip-172-31-7-147 postfix/submission/smtpd[8239]: lost connection after EHLO from unknown[2001:470:28:743:4923:c01c:c89a:567a] Dec 14 22:39:24 ip-172-31-7-147 postfix/submission/smtpd[8239]: disconnect from unknown[2001:470:28:743:4923:c01c:c89a:567a] Dec 14 22:39:24 ip-172-31-7-147 postfix/submission/smtpd[8237]: lost connection after EHLO from cable-tku-58c3cc-203.dhcp.inet.fi[88.195.204.203] Dec 14 22:39:24 ip-172-31-7-147 postfix/submission/smtpd[8237]: disconnect from cable-tku-58c3cc-203.dhcp.inet.fi[88.195.204.203] Dec 14 22:40:13 ip-172-31-7-147 dovecot: imap-login: Login: user=<sm>, method=PLAIN, rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2, mpid=8243, TLS Dec 14 22:40:57 ip-172-31-7-147 dovecot: imap-login: Disconnected (no auth attempts): rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2 Dec 14 22:40:57 ip-172-31-7-147 dovecot: pop3-login: Disconnected (tried to use disabled plaintext auth): rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2 Dec 14 22:40:58 ip-172-31-7-147 dovecot: pop3-login: Disconnected (tried to use disabled plaintext auth): rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2 Dec 14 22:42:44 ip-172-31-7-147 dovecot: imap-login: Disconnected (no auth attempts): rip=2001:470:28:743:4923:c01c:c89a:567a, lip=2001:470:1f08:ddd::2 Dec 14 22:42:45 ip-172-31-7-147 postfix/anvil[8238]: statistics: max connection rate 3/60s for (submission:2001:470:28:743:4923:c01c:c89a:567a) at Dec 14 22:39:24 Dec 14 22:42:45 ip-172-31-7-147 postfix/anvil[8238]: statistics: max connection count 1 for (submission:2001:470:28:743:4923:c01c:c89a:567a) at Dec 14 22:39:22 Dec 14 22:42:45 ip-172-31-7-147 postfix/anvil[8238]: statistics: max cache size 2 at Dec 14 22:39:22 Telnet log while connected over IPV6 to port 587 on mail server: Trying 2001:470:1f08:ddd::2... Connected to 2001:470:1f08:ddd::2. Escape character is '^]'. 220 mail.sami-mantysaari.biz ESMTP Postfix ehlo samip537.tk 250-mail.sami-mantysaari.biz 250-PIPELINING 250-SIZE 10240000 250-ETRN 250-STARTTLS 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN quit 221 2.0.0 Bye Connection closed by foreign host. Any seggestions what to try in order to get this to work?

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[Dovecot] connection Dovecot to samba4
by Pascal den Bekker 16 Dec '13

16 Dec '13

Hello, I am trying to setup samba4/openchange and dovecot. Does anyone has experiences concering dovecot connecting to samba4 ?? I tried the following: /etc/dovecot.conf: protocols = imap sieve mail_location = maildir:/data/mail/%d/%n/Maildir mail_access_groups = vmail mail_privileged_group = vmail first_valid_uid = 110 last_valid_uid = 110 first_valid_gid = 115 last_valid_gid = 115 log_path = /var/log/dovecot log_timestamp = "%Y-%m-%d %H:%M:%S " login_greeting = Welcome to domain.local. service imap { inet_listener { port=143 } } protocol lda { log_path = /var/log/mail/dovecot-deliver.log auth_socket_path = /var/run/dovecot/auth-master postmaster_address = postmaster(a)domain.local mail_plugins = sieve } service managesieve { inet_listener { port=12000 } } auth_verbose = yes auth_debug = yes service auth { unix_listener /var/spool/postfix/private/auth { group = vmail mode = 0660 user = postfix } } #service auth-userdb { # user = vmail # } #user = root #} passdb { args = /etc/dovecot/dovecot-ldap-passdb.conf driver = ldap } userdb { args = /etc/dovecot/dovecot-ldap-userdb.conf driver = ldap } plugin { sieve = /data/mail/%d/%n/sieverc sieve_storage=/data/mail/%d/%n/sieve sieve_max_redirects = 20 } debug_log_path = /var/log/dovecot-debug.log dict { } /etc/dovecot/dovecot-ldap-passdb.conf hosts = localhost auth_bind = yes auth_bind_userdn = cn=%u,cn=Users,dc=domain,dc=local ldap_version = 3 base = cn=Users,dc=domain,dc=local pass_filter = (&(objectClass=person)(cn=%u)(mail=*)) /etc/dovecot/dovecot-ldap-userdb.conf: hosts = localhost dn = cn=ldap,cn=Users,DC=domain,DC=local dnpass = password ldap_version = 3 base = cn=Users,DC=domain,DC=local #user_attrs = user_attrs=uid=5000,=gid=5000,=home=/data/mail/%d/%n,mail=/data/mail/%d/%u/Maildir user_filter = (&(objectClass=person)(cn=%u)(mail=*)) iterate_attrs = cn=user iterate_filter = (objectClass=person) When I try to login with useraccountadministrator I get the following error messages: 2013-12-16 11:28:29 auth: Info: ldap(ldap,127.0.0.1,<N3HjRaTtdAB/AAAB>): unknown user 2013-12-16 11:28:29 auth: Error: userdb(ldap,127.0.0.1,<N3HjRaTtdAB/AAAB>): user not found from userdb ldap 2013-12-16 11:28:29 imap: Error: Authenticated user not found from userdb, auth lookup id=783810561 (client-pid=3809 client-id=1) 2013-12-16 11:28:29 imap-login: Info: Internal login failure (pid=3809 id=1) (internal failure, 1 succesful auths): user=<ldap>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=3810, secured, session=<N3HjRaTtdAB/AAAB> Can someone tell me what I am doing wrong, or is there way to test to dovecot ldap connection string ?? Cheers, - Pascal -- Pascal den Bekker Linux System Administrator Affinitas GmbH | Kohlfurter Straße 41/43 | 10999 Berlin | Germany email: pascal_den.bekker(a)affinitas.de | tel: +49 30 868 000 140 www.edarling.de | www.shopaman.de Geschäftsführer: Lukas Brosseder, David Khalil, Michael Schrezenmaier Eingetragen beim Amtsgericht Berlin-Charlottenburg, HRB 115958

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[Dovecot] Turn of mount point adding?
by Scott Galambos 16 Dec '13

16 Dec '13

I'm running dovecot 2.2.5 and would like to completely turn off all automatic adding of mount points. So var/lib/dovecot/mounts would be empty essentially. Is this possible? Somehow dovecot always adds a mount point that does not exist and was removed a long time ago. I've dove: doveadm mount add '/my custom path/*' ignore but it still will add mount points in the "mounts" file and flag them as online. for example: ignore /apps/proftp/servers/ftp.domain.ca/* ignore /mnt/* online / online /apps/proftp/servers/ftp.domain.ca/www.site1.com online /apps/proftp/servers/ftp.domain.ca/www.site2.com online /apps/proftp/servers/ftp.domain.ca/www.site3.com what does it list site1, 2 and 3 if its suppose to ignore the root path with the first line? I would to completely disable all mountpoints. Even "doveadm mount add '/*' ignore" should render a mounts file empty on reboot correct? It doesn't and keeps rebuilding it.

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