- dovecot - dovecot.org

Re: [Dovecot] limiting number of incorrect logins per connection
by alex＠ahhyes.net 26 Aug '11

26 Aug '11

Hi, I saw that thread already, however it does not offer any solution that can be applied to dovecot directly. That thread has also been asleep for well over a year. It couldnt be that hard for the author to implement this function. It would only require a few lines of code. ----- Reply message ----- From: "Robert Schetterer" <robert(a)schetterer.org> Date: Fri, Aug 26, 2011 17:59 Subject: [Dovecot] limiting number of incorrect logins per connection To: <dovecot(a)dovecot.org> Am 26.08.2011 09:25, schrieb Alex: > Hi Guys, > > Running Dovecot 2 on my server. It is regularly getting dictionary auth > attacked. What I have noticed is that once connected to a pop3/imap > login session, you can send endless incorrect usernames+passwords > attempts. This is a problem for me... I use fail2ban to try and stop > these script kiddies. The problem is that fail2ban detects the bad > auths, firewalls the IP, however, since it's an "established" session, > the attacker can keep authing away... It's only on a subsequent (new) > connection that the firewalling will take effect. > > Why is there no configuration option such as "max auth attempts per > connection"? This would be useful, so once the limit is reached, the > connection is dropped. > > is there a patch/workaround? > there where equal questions in the past i.e read http://comments.gmane.org/gmane.mail.imap.dovecot/46204 -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria

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Re: [Dovecot] On IMAP vhost login, only Username being used
by hobie＠rumormillnews.com 26 Aug '11

26 Aug '11

Recapping: I'm working to set up Dovecot 2.0.13 along with some additional software (qmail, vpopmail, squirrelmail). It's working fine with squirrelmail now, but trying to connect over SSL with a Thunderbird variant and using IMAP, authentication fails because Dovecot is trying to match only the front part of the name (the user part), ignoring the domain name part of what it's being sent. So, instead of seeking to match virtual user: joe_blow(a)some_domain.com ...it's trying to match: joe_blow ...and failing, since joe_blow is not a system user but is a virtual host user. With Squirrelmail, connecting from localhost via non-SSL IMAP, the match is handled correctly, no problem. I've run the runtbird.sh script but no light was shed on this by the resulting output, all it said was that authentication was failing. Has anyone else encountered this problem? Any suggestions on how to fix it or where to look for additional info? Thanks kindly. --hobie > I tried the runtbird.sh script, hoping for more info - all it did was show that auth is failing. I don't understand why Dovecot is separating the username from the domain name, and trying to match only on the username. Seems like there must be a config setting that affects this and that I'm overlooking. Thanks ahead for any help with this. > > --hobie > > hobie wrote earlier: > > ===== > > Attempting IMAP SSL login on new installation, using Icedove (Debain Thunderbird variant), login fails. Logs show Dovecot attempting to match username only, not username with domain name, on Vpopmail user, so of course no match. Tried with '@' in full username, also with '%'. What's missing? > > Log shows: > > Aug 24 19:30:48 debian dovecot: auth: Debug: client in: CONT<hidden> Aug 24 19:30:48 debian dovecot: auth: Debug: Loading modules from directory: /usr/local/lib/dovecot/auth > Aug 24 19:30:48 debian dovecot: auth: Debug: vpopmail(postmaster,[IP redacted]): lookup user=postmaster domain= > > Current config: > > # 2.0.13: /usr/local/etc/dovecot/dovecot.conf > # OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.2 ext3 > auth_debug = yes > auth_verbose = yes > disable_plaintext_auth = no > first_valid_gid = 89 > first_valid_uid = 89 > mail_debug = yes > mail_location = maildir:/home/vpopmail/domains/%d/%n/Maildir > maildir_very_dirty_syncs = yes > passdb { > driver = vpopmail > } > protocols = imap pop3 > ssl_cert = </etc/ssl/certs/dovecot.pem > ssl_key = </etc/ssl/private/dovecot.pem > userdb { > args = quota_template=quota_rule=*:backend=%q > driver = vpopmail > } > > --hobie > > ===== >

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[Dovecot] Dovecot 2.0.13 How to use POP3 order
by Nick Celebic 26 Aug '11

26 Aug '11

I saw a few commits for 2.0.13 that added MAIL_FETCH_POP3_ORDER, but I haven't been able to find any information on how to use it. I'm migrating from a Merak mail server into dovecot and all the email can be copied directly into a Maildir/cur directory. The filenames are just the timestamps. When I check with dovecot pop3, they seem to be randomly ordered. I'm hoping this provides a solution where it will look at the file list or stat order. If this isn't possible, can someone tell me how I can change the order in which dovecot lists mails in a UIDL in POP3? Thanks, Nick Celebic

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[Dovecot] Catch22: user needs space to fix out of space condition
by Joseph Tam 25 Aug '11

25 Aug '11

A mail user reported that he filled up his INBOX (despite reminders he was approaching his filesystem quota), and furthermore, he could not fix the situation because he couldn't expunge message he marked for deletion. The dovecot logs revealed the cause dovecot: imap(user): Error: open(/var/mail/user.lock) failed: Disc quota exceeded This created an impasse where a user cannot free space because he needs to create a lock file that cannot be created because he needs free space. Is there any way out of this without administrator intervention? Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] dovecot and maillists problem
by Костырев Александр Алексеевич 25 Aug '11

25 Aug '11

Hello there! I have a little trouble with using dovecot as lmtp and maillists. I use dovecot 2.0.13 with exim 4.72 on Debian 6.0. (All stuff at one host). info of maillists is store in mysql table, for example: +---------+-------------------------------------------------------------------------------------------------+ | name | recipients | +---------+-------------------------------------------------------------------------------------------------+ | Hab_Tax | 2504000067-253601001.253809737993@25.example.org,2721097514-272101001.271300057673@.example.org | +---------+-------------------------------------------------------------------------------------------------+ The problem is: When I send a letter to short maillist (as above) it get the same ID and stored only once in the maildir of one user who is the member of that maillist - that's ok, but When I send a letter to maillist with a large number of recipients it occurred that it's saved more than one, because of the headers added by dovecot lmtp (I've changed host name): diff letter_in_one_user/1314238006.M841940P6916.pink\,S\=12778136\,W\=12953189 letler_in_second_user/new/1314237993.M460165P6916.pink\,S\=12778136\,W\=12953189 3,4c3,4 < by pink.atlas-2.ru (Dovecot) with LMTP id 6UiGJBWuVU4EGwAA1nFjLA < ; Thu, 25 Aug 2011 13:06:46 +1100 --- > by pink.atlas-2.ru (Dovecot) with LMTP id VUeGJBWuVU4EGwAA1nFjLA > ; Thu, 25 Aug 2011 13:06:29 +1100 It's the same letter accept the date and id. What I get in logs is: I see that exim send letters in maillist with one and the same id: ...skipped... 13:06:46 1QwPKe-0001nU-U5 <2502(a)example.org> ... 13:06:47 1QwPKe-0001nU-U5 <2502(a)example.org> ... But in logs of dovecot I see: 13:06:14 msgid=<E1QwPKe-0001nU-U5(a)pink.example.org>: wUWGJBWuVU4EGwAA1nFjLA: 13:06:18 msgid=<E1QwPKe-0001nU-U5(a)pink.example.org>: wEWGJBWuVU4EGwAA1nFjLA: 13:06:22 msgid=<E1QwPKe-0001nU-U5(a)pink.example.org>: JkaGJBWuVU4EGwAA1nFjLA: 13:06:26 msgid=<E1QwPKe-0001nU-U5(a)pink.example.org>: i0aGJBWuVU4EGwAA1nFjLA: 13:06:30 msgid=<E1QwPKe-0001nU-U5(a)pink.example.org>: 8EaGJBWuVU4EGwAA1nFjLA: 13:06:34 msgid=<E1QwPKe-0001nU-U5(a)pink.example.org>: VUeGJBWuVU4EGwAA1nFjLA: 13:06:37 msgid=<E1QwPKe-0001nU-U5(a)pink.example.org>: ukeGJBWuVU4EGwAA1nFjLA: 13:06:42 msgid=<E1QwPKe-0001nU-U5(a)pink.example.org>: H0iGJBWuVU4EGwAA1nFjLA: 13:06:46 msgid=<E1QwPKe-0001nU-U5(a)pink.example.org>: hEiGJBWuVU4EGwAA1nFjLA: 13:06:47 msgid=<E1QwPKe-0001nU-U5(a)pink.example.org>: 6UiGJBWuVU4EGwAA1nFjLA: Also in dovecot log I've noticed that: at first auth is searching info in sql for 200 users then log continues with lmtp's info then auth is searching info in sql for another portion of users and this loop in log continues. Dovecot.conf: http://pastebin.com/ueCBU3bP dovecot.sql: http://pastebin.com/kqCq52mC dovecot.log http://pastebin.com/YiyMWpx1 exim.conf: http://pastebin.com/F4MNQkAx exim.log: http://pastebin.com/wn83TZpX

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[Dovecot] On IMAP vhost login, only Username being used
by hobie＠rumormillnews.com 25 Aug '11

25 Aug '11

Attempting IMAP SSL login on new installation, using Icedove (Debain Thunderbird variant), login fails. Logs show Dovecot attempting to match username only, not username with domain name, on Vpopmail user, so of course no match. Tried with '@' in full username, also with '%'. What's missing? Log shows: Aug 24 19:30:48 debian dovecot: auth: Debug: client in: CONT<hidden> Aug 24 19:30:48 debian dovecot: auth: Debug: Loading modules from directory: /usr/local/lib/dovecot/auth Aug 24 19:30:48 debian dovecot: auth: Debug: vpopmail(postmaster,[IP redacted]): lookup user=postmaster domain= Current config: # 2.0.13: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.2 ext3 auth_debug = yes auth_verbose = yes disable_plaintext_auth = no first_valid_gid = 89 first_valid_uid = 89 mail_debug = yes mail_location = maildir:/home/vpopmail/domains/%d/%n/Maildir maildir_very_dirty_syncs = yes passdb { driver = vpopmail } protocols = imap pop3 ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { args = quota_template=quota_rule=*:backend=%q driver = vpopmail } --hobie

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[Dovecot] Post-login scripting with virtual users
by Mark Willcox 25 Aug '11

25 Aug '11

I am running Dovecot 2.0.13 on Fedora 15. I have migrated from a bincimap installation using checklocalpwd. All email is in folders owned by a unprivileged user, popuser. The email users are entirely virtual and have no relationship to actual linux users. My userdb calls return the UID and GID of popuser and all goes well retrieving the mail via POP3 and IMAP. I am trying to implement a Post-login script to register the IP address that the authentication came from. Dovecot seems to be trying to execute the script as the email non-user, which does not work. I have specified that the script should be run as popuser, but it still runs as devnull(a)dhzone.com for instance. Everything up top that point seems to be happening happily under popuser. I added a "user = popuser" directive and it had no effect that I could see. I know that dovecot read the directive because I changed it to "user = 555" and dovecot would not run because "555" is not a user. I tried adding a "User = popuser" within the unix_listener but that also had no effect. Any ideas? Thank you! ------------------------------ Here is my dovecot -n: # 2.0.13: /etc/dovecot/dovecot.conf # OS: Linux 2.6.40.3-0.fc15.x86_64 x86_64 Fedora release 15 (Lovelock) auth_debug = yes disable_plaintext_auth = no mail_debug = yes mbox_write_locks = fcntl passdb { args = /etc/dovecot/conf.d/dovecot-sql.conf.ext driver = sql } protocols = imap pop3 service imap-postpop { executable = script-login /usr/local/bin/set_postpop unix_listener imap-postpop { } user = popuser } service imap { executable = imap imap-postpop } ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { args = /etc/dovecot/conf.d/dovecot-sql.conf.ext driver = sql } ----------------------------------------------------- The dovecot-sql.conf.ext looks like this: driver = mysql connect = host=localhost dbname=webmail user=xxxx password=xxxx password_query = SELECT id AS user, IF( clear IS NULL, CONCAT('{CRYPT}',crypto), CONCAT('{PLAIN}',clear)) AS password \ FROM users WHERE id = '%u' user_query = SELECT home, uid, gid \ FROM users WHERE id = '%u' ------------------------------- >From the maillog: Aug 24 13:01:57 callisto dovecot: auth: Debug: client out: OK#0111#011user=devnull(a)dhzone.com Aug 24 13:01:57 callisto dovecot: auth: Debug: master in: REQUEST... Aug 24 13:01:57 callisto dovecot: auth: Debug: sql(devnull(a)dhzone.com,75.221.209.232): SELECT home, uid, gid FROM users WHERE id = 'devnull(a)dhzone.com' Aug 24 13:01:57 callisto dovecot: auth: Debug: master out: USER#0114007264257#011devnull@dhzone.com#011home=/var/qmail/popbox/dhzone-com/devnull#011uid=555#011gid=555 Aug 24 13:01:57 callisto dovecot: imap-login: Login: user=<devnull(a)dhzone.com>, method=PLAIN, rip=75.221.209.232, lip=76.76.59.241, mpid=667 Aug 24 13:01:57 callisto dovecot: imap-postpop: Error: script-login: Error: user devnull(a)dhzone.com: Error reading configuration: net_connect_unix(/var/run/dovecot/config) failed: Permission denied Aug 24 13:01:57 callisto dovecot: imap-postpop: Error: script-login: Fatal: Internal error occurred. Refer to server log for more information. Aug 24 13:01:57 callisto dovecot: imap(devnull(a)dhzone.com): Post-login script denied access to user devnull(a)dhzone.com Aug 24 13:01:57 callisto dovecot: log: Error: service(imap-postpop): child 668 returned error 89 (Fatal failure) Aug 24 13:02:03 callisto dovecot: master: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill) -- _________________ Mark Willcox Data Helper, Inc.

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[Dovecot] Dovecot rejecting Vpopmail User 89
by hobie＠rumormillnews.com 24 Aug '11

24 Aug '11

I'm working to get Dovecot 2.0.13 working along with qmail, Vpopmail and Squirrelmail on a Debian 6.0.2 system, Dovecot compiled, not from a package. Vpopmail has a widely known assigned user/group ID of 89 and is the owner of all the mail folders. Regardless of value of first_valid_uid (1, 89, other), Dovecot denies Squirrelmail connection, saying it can't allow access to UID 89. "Couldn't drop privileges", it says. I'd be grateful for fixes, suggestions, or a pointer to an existing answer to this problem. Thanks ahead. :) Presently dovecot -n shows: # 2.0.13: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.2 ext3 auth_debug = yes disable_plaintext_auth = no mail_debug = yes mail_location = maildir:/home/vpopmail/domains/%d/%n/Maildir maildir_very_dirty_syncs = yes passdb { driver = vpopmail } protocols = imap pop3 ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd } userdb { args = quota_template=quota_rule=*:backend=%q driver = vpopmail } --hobie

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Re: [Dovecot] Dovecot rejecting Vpopmail User 89
by Rick Romero 24 Aug '11

24 Aug '11

Enable auth_verbose and check the logs. But I'm pretty sure that means Dovecot can't change to the Maildir folder. I assume the user's folder is owned by vpopmail:vchkpw? Is the Maildir NFS mounted or local? Rick Quoting hobie(a)rumormillnews.com: > Thanks, Rick. :) Changed first/last uid/gid so all show 89 and restarted > Dovecot, no change. Telnetting from remote or from localhost, Dovecot > closes the connection immediately after password is sent. (?) > > --hobie > >> Quoting hobie(a)rumormillnews.com: >> >>> I'm working to get Dovecot 2.0.13 working along with qmail, Vpopmail and >>> Squirrelmail on a Debian 6.0.2 system, Dovecot compiled, not from a >>> package. >>> >>> Vpopmail has a widely known assigned user/group ID of 89 and is the >>> owner >>> of all the mail folders. >>> >>> Regardless of value of first_valid_uid (1, 89, other), Dovecot denies >>> Squirrelmail connection, saying it can't allow access to UID 89. >>> "Couldn't >>> drop privileges", it says. I'd be grateful for fixes, suggestions, or a >>> pointer to an existing answer to this problem. Thanks ahead. :) >>> >> >> Here's mine - I set first and last uid AND gid. >> Can you telnet to port 110 and test? >> >> USER username >> PASS password >> LIST >> >> >> # 2.0.13: /usr/local/etc/dovecot/dovecot.conf >> # OS: FreeBSD 8.2-RELEASE amd64 >> auth_mechanisms = plain login digest-md5 cram-md5 >> auth_username_translation = %@ >> auth_verbose = yes >> base_dir = /var/run/dovecot/ >> default_login_user = vpopmail >> disable_plaintext_auth = no >> first_valid_gid = 89 >> first_valid_uid = 89 >> last_valid_gid = 89 >> last_valid_uid = 89 >> # run under tcpserver >> log_path = /dev/stderr >> login_greeting = Ready. >> mail_fsync = never >> mail_plugins = " quota zlib" >> mail_privileged_group = mail >> namespace { >> inbox = yes >> location = >> prefix = >> separator = . >> } >> namespace { >> hidden = yes >> inbox = no >> list = no >> location = >> prefix = INBOX. >> separator = . >> } >> passdb { >> driver = vpopmail >> } >> plugin { >> quota = maildir >> } >> protocols = imap pop3 >> service anvil { >> client_limit = 2000 >> } >> service auth { >> unix_listener auth-master { >> mode = 0600 >> } >> } >> service imap-login { >> client_limit = 384 >> process_limit = 512 >> process_min_avail = 25 >> service_count = 0 >> } >> service imap-postlogin { >> executable = script-login rawlog >> /usr/local/etc/dovecot/lastauth-imap.sh >> user = vpopmail >> } >> service imap { >> executable = /usr/local/libexec/dovecot/imap >> } >> service pop-postlogin { >> executable = script-login /usr/local/etc/dovecot/lastauth-pop.sh >> user = vpopmail >> } >> service pop3-login { >> client_limit = 384 >> process_limit = 512 >> process_min_avail = 25 >> service_count = 0 >> } >> service pop3 { >> executable = /usr/local/libexec/dovecot/pop3 >> } >> shutdown_clients = no >> ssl_cert = </etc/ssl/mail.pem >> ssl_key = </etc/ssl/mail.key >> ssl_key_password = password >> userdb { >> driver = vpopmail >> } >> verbose_proctitle = yes >> protocol imap { >> auth_socket_path = /var/run/dovecot/auth-master >> imap_client_workarounds = delay-newmail tb-extra-mailbox-sep >> mail_max_userip_connections = 10 >> mail_plugins = " quota zlib imap_zlib quota imap_quota" >> } >> protocol pop3 { >> auth_socket_path = /var/run/dovecot/auth-master >> mail_max_userip_connections = 10 >> mail_plugins = quota >> pop3_client_workarounds = outlook-no-nuls oe-ns-eoh >> pop3_uidl_format = %08Xu%08Xv >> >> >>

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[Dovecot] BUG - lmtp multiple recipients fail - setuid issue?
by Boris Lordis 24 Aug '11

24 Aug '11

Hello, I am not having much luck on this particular issue so I wanted to make sure that this is registered as a potential bug. The essence of the problem is that for a given message addressed to multiple users, lmtp writes the message correctly to the first addressed user only, then subsequent user writes fail as the lmtp process doesn't run with the proper permissions and tries to link files from different users as part of its message writing. Below you can see that lmtp (running with steve's id, who was the first listed recipient) is trying to link a file in jerry's inbox meeting with failure: Jul 27 11:24:42 testmailserver dovecot: lmtp(12412, steve): Error: link(/spool/mail/j/jerry/mail/INBOX/u.20423, /spool/mail/s/steve/mail/INBOX/.temp.1311791081.P12412Q2M989550.testmailserver.) failed: Permission denied Jul 27 11:24:42 testmailserver dovecot: lmtp(12412, steve): +1IXBeVXME58MAAARoVNxQ: msgid <201107271824.p6RIOPa5020900 at backup.>: save failed to INBOX: Internal error occurred. Refer to server log for more information. [2011-07-27 11:24:41] Best regards, -Boris I am using version 2.0.13. dovecot -n shows this: # 2.0.13: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-71.29.1.el6.i686 i686 CentOS Linux release 6.0 (Final) ext4 auth_debug = yes auth_master_user_separator = * auth_verbose = yes auth_verbose_passwords = plain lda_mailbox_autocreate = yes mail_debug = yes mail_location = sdbox:/spool/mail/%1Ln/%Ln/mail:INBOX=/spool/mail/%1Ln/%Ln/mail/INBOX mbox_write_locks = fcntl passdb { args = /etc/dovecot/master-users driver = passwd-file master = yes } passdb { args = failure_show_msg=yes driver = pam } plugin { autocreate = INBOX autosubscribe = INBOX } service lmtp { inet_listener ltmp { port = 24 } } ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { args = home=/spool/mail/%1Ln/%Ln driver = passwd } protocol lmtp { mail_plugins = " autocreate" }

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[Dovecot] SiS
by Guy Deleeuw 24 Aug '11

24 Aug '11

Hello, SiS is implemented and stable in the last version ? Best Regards Guy

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[Dovecot] Attachments not removed from single store
by Karsten Becker 24 Aug '11

24 Aug '11

Hi. Well, I've the next problem. I turned on the new attachment de-duplication stuff in the configuration. If I send an attchment between two accounts on my test system, the attment gets saved ion the configured mail_attachment_dir. But... if I delete it from the senders Send folder and the receivers Inbox (and of course empty Trash afterwards in both cases), the hashes and the attachment are not deleted in mail_attachment_dir (as I would expect). Is this a bug, or have I misunderstood the concept of storing attachments? Regards Karsten ------------------------------------------------ > # 2.0.13: /usr/local/dovecot-2.0.13/etc/dovecot/dovecot.conf > # OS: Linux 2.6.32-33-server x86_64 Ubuntu 10.04.3 LTS ext4 > doveconf: Warning: Dovecot was last started using /etc/dovecot/dovecot.conf, but this config is /usr/local/dovecot-2.0.13/etc/dovecot/dovecot.conf > auth_cache_negative_ttl = 0 > auth_cache_size = 10 M > auth_mechanisms = plain login > base_dir = /usr/local/dovecot/var/run/dovecot > dict { > acl = mysql:/etc/dovecot/dovecot-dict-shared-mailboxes-mysql.conf > expire = mysql:/etc/dovecot/dovecot-dict-expire-mysql.conf > quota = mysql:/etc/dovecot/dovecot-dict-quota-mysql.conf > } > log_timestamp = "%Y-%m-%d %H:%M:%S " > login_greeting = Company Institute > mail_attachment_dir = /srv/vmail/attachments > mail_attachment_hash = %{sha256} > mail_cache_min_mail_count = 2 > mail_debug = yes > mail_location = mdbox:/srv/vmail/user-mailboxes/%d/%n > mail_plugins = acl expire quota > mailbox_idle_check_interval = 1 mins > namespace { > inbox = yes > location = > prefix = > separator = / > subscriptions = yes > type = private > } > namespace { > list = children > location = mdbox:/srv/vmail/user-mailboxes/%%d/%%n > prefix = Users/%%d/%%n/ > separator = / > subscriptions = no > type = shared > } > namespace { > list = children > location = maildir:/srv/vmail/public_folders:INDEX=/srv/vmail/user-mailboxes/%d/%n/public_folders-seen:LAYOUT=fs > prefix = Folders/ > separator = / > subscriptions = no > type = public > } > passdb { > args = /etc/dovecot/dovecot-mysql.conf > driver = sql > } > plugin { > acl = vfile:/etc/dovecot/global-acls:cache_secs=300 > acl_shared_dict = proxy::acl > expire = Trash > expire2 = Trash/* > expire3 = Spam > expire4 = Spam/* > expire5 = Junk > expire6 = Junk/* > expire_dict = proxy::expire > quota = dict:User quota::proxy::quota > quota_rule = *:storage=10485760 > quota_rule2 = Trash:storage=+1048576 > quota_warning = storage=95%% quota-warning 95 %u > quota_warning2 = storage=80%% quota-warning 80 %u > } > postmaster_address = postmaster(a)company.eu > protocols = imap pop3 > service auth { > unix_listener /var/spool/postfix/private/auth_dovecot { > group = postfix > mode = 0660 > user = postfix > } > unix_listener auth-master { > mode = 0600 > user = vmail > } > user = root > } > service dict { > unix_listener dict { > mode = 0600 > user = vmail > } > } > service imap-login { > inet_listener imaps { > port = 993 > ssl = yes > } > process_min_avail = 2 > } > service imap { > vsz_limit = 512 M > } > service pop3-login { > inet_listener pop3s { > port = 995 > ssl = yes > } > } > service quota-warning { > executable = script /usr/local/bin/quota-warning.sh > user = vmail > } > ssl = required > ssl_cert = </etc/postfix/ssl/mail01.compdmz.local.crt > ssl_key = </etc/postfix/ssl/mail01.compdmz.local.key > userdb { > args = /etc/dovecot/dovecot-mysql.conf > driver = sql > } > verbose_proctitle = yes > protocol lda { > auth_socket_path = auth-master > postmaster_address = postmaster(a)company.eu > } > protocol imap { > imap_client_workarounds = delay-newmail tb-lsub-flags tb-extra-mailbox-sep > imap_max_line_length = 128 k > mail_plugins = acl expire quota imap_acl imap_quota > } > protocol pop3 { > pop3_client_workarounds = outlook-no-nuls oe-ns-eoh > }

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[Dovecot] Bug report v2.0.13 - CentOS x86_64 - NFS - mbox
by Kostas Zorbadelos 24 Aug '11

24 Aug '11

Greetings to all. It's my first post to the list. We just completed a migration from qpopper to dovecot for our IMAP and POP3 services. We have a rather large mail environment (we are the biggest provider in Greece). So, here are the details: - Keep getting errors like these in our production environment Jul 22 00:18:21 pop01 dovecot: master: Error: service(pop3): child 4078 killed with signal 11 (core dumps disabled) Jul 22 00:19:31 pop03 dovecot: master: Error: service(pop3): child 18849 killed with signal 11 (core dumps disabled) --------------------------------------------------------------------- dovecot -n output --------------------------------------------------------------------- /opt/dovecot/sbin/dovecot -n # 2.0.13: /opt/dovecot/etc/dovecot/dovecot.conf # OS: Linux 2.6.18-92.1.22.el5 x86_64 CentOS release 5.5 (Final) auth_cache_negative_ttl = 10 mins auth_cache_size = 5 M auth_cache_ttl = 10 mins auth_verbose = yes default_client_limit = 5000 default_process_limit = 500 disable_plaintext_auth = no first_valid_uid = 200 listen = * log_timestamp = "%Y-%m-%d %H:%M:%S " login_greeting = <COMPANY> ready mail_access_groups = mail otemail disk root mail_fsync = always mail_location = mbox:INDEX=/var/index/dovecot/%2.16Hn/%2.254Hn/%u mail_nfs_storage = yes mbox_lock_timeout = 2 mins mbox_min_index_size = 200 k mbox_read_locks = dotlock_try fcntl mbox_write_locks = dotlock_try fcntl passdb { args = /opt/dovecot/etc/dovecot/dovecot-ldap.conf.ext driver = ldap } protocols = imap pop3 service auth-worker { user = dovenull } 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 = no userdb { args = /opt/dovecot/etc/dovecot/dovecot-ldap.conf.ext driver = ldap } verbose_proctitle = yes protocol imap { imap_client_workarounds = delay-newmail tb-extra-mailbox-sep mail_max_userip_connections = 100 } protocol pop3 { mail_max_userip_connections = 100 pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_fast_size_lookups = yes pop3_lock_session = yes pop3_reuse_xuidl = yes pop3_uidl_format = %08Xu%08Xv } I enabled core dumps in one of our backend servers and here is the relevant gdb trace: [root@pop08 ~]# gdb /opt/dovecot/libexec/dovecot/pop3 <path_to_core_file>/core.9273 GNU gdb (GDB) Red Hat Enterprise Linux (7.0.1-32.el5_6.2) Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-redhat-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /opt/dovecot/libexec/dovecot/pop3...(no debugging symbols found)...done. Reading symbols from /opt/dovecot/lib/dovecot/libdovecot-storage.so.0...(no debugging symbols found)...done. Loaded symbols for /opt/dovecot/lib/dovecot/libdovecot-storage.so.0 Reading symbols from /opt/dovecot/lib/dovecot/libdovecot.so.0...(no debugging symbols found)...done. Loaded symbols for /opt/dovecot/lib/dovecot/libdovecot.so.0 Reading symbols from /lib64/libdl.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/libdl.so.2 Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done. Loaded symbols for /lib64/librt.so.1 Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done. Loaded symbols for /lib64/libc.so.6 Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/ld-linux-x86-64.so.2 Reading symbols from /lib64/libpthread.so.0...(no debugging symbols found)...done. Loaded symbols for /lib64/libpthread.so.0 Core was generated by `dovecot/pop3'. Program terminated with signal 11, Segmentation fault. #0 0x00002b52e1027e54 in istream_raw_mbox_get_start_offset () from /opt/dovecot/lib/dovecot/libdovecot-storage.so.0 (gdb) bt full #0 0x00002b52e1027e54 in istream_raw_mbox_get_start_offset () from /opt/dovecot/lib/dovecot/libdovecot-storage.so.0 No symbol table info available. #1 0x00002b52e102b759 in ?? () from /opt/dovecot/lib/dovecot/libdovecot-storage.so.0 No symbol table info available. #2 0x00002b52e100a2c0 in index_mail_expunge () from /opt/dovecot/lib/dovecot/libdovecot-storage.so.0 No symbol table info available. #3 0x0000000000405e9c in client_update_mails () No symbol table info available. #4 0x00000000004061c1 in client_command_execute () No symbol table info available. #5 0x00000000004045b9 in client_handle_input () No symbol table info available. #6 0x00002b52e12df698 in io_loop_call_io () from /opt/dovecot/lib/dovecot/libdovecot.so.0 No symbol table info available. #7 0x00002b52e12e09d5 in io_loop_handler_run () from /opt/dovecot/lib/dovecot/libdovecot.so.0 No symbol table info available. #8 0x00002b52e12df62d in io_loop_run () from /opt/dovecot/lib/dovecot/libdovecot.so.0 No symbol table info available. #9 0x00002b52e12cdf13 in master_service_run () from /opt/dovecot/lib/dovecot/libdovecot.so.0 No symbol table info available. #10 0x0000000000403994 in main () No symbol table info available. (gdb) All traces of the crashes are identical, that is #0 0x00002b52e1027e54 in istream_raw_mbox_get_start_offset () from /opt/dovecot/lib/dovecot/libdovecot-storage.so.0 #1 0x00002b52e102b759 in ?? () from /opt/dovecot/lib/dovecot/libdovecot-storage.so.0 #2 0x00002b52e100a2c0 in index_mail_expunge () from /opt/dovecot/lib/dovecot/libdovecot-storage.so.0 #3 0x0000000000405e9c in client_update_mails () #4 0x00000000004061c1 in client_command_execute () #5 0x00000000004045b9 in client_handle_input () #6 0x00002b52e12df698 in io_loop_call_io () from /opt/dovecot/lib/dovecot/libdovecot.so.0 #7 0x00002b52e12e09d5 in io_loop_handler_run () from /opt/dovecot/lib/dovecot/libdovecot.so.0 #8 0x00002b52e12df62d in io_loop_run () from /opt/dovecot/lib/dovecot/libdovecot.so.0 #9 0x00002b52e12cdf13 in master_service_run () from /opt/dovecot/lib/dovecot/libdovecot.so.0 #10 0x0000000000403994 in main () We have mboxes over NFS and we also have an ldap user backend. For now, I do not have a scenario that reproduces the problem. Any idea, or input are highly appreciated. Of course I can provide any information requested (without exposing restricted company or client data) to help trace the problem and lead to the solution. Thanks and keep up the good work! Regards, Kostas Zorbadelos

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[Dovecot] Cannot delete subfolder in public folder
by Karsten Becker 24 Aug '11

24 Aug '11

Hi there, I have the problem that I'm unable to delete a subfolder (again) I created within a public folder. I've already read about configuring Thunderbird to delete immediately - which I did. But it still doesn't work. I delete -> the folder is gone -> I get a TB error message saying "The folder doesn't exist" -> after restarting TB the folders appear again. Maybe someone has a hint. My tip is that I may have a wrong understanding of the ACL mechanism... :-( Regards from Berlin/Germany Karsten ------------------------ Log: > Aug 24 00:01:37 mail01 dovecot: imap(karsten.becker(a)company.eu): Debug: acl vfile: file /etc/dovecot/global-acls//.DEFAULT not found > Aug 24 00:01:37 mail01 dovecot: imap(karsten.becker(a)company.eu): Debug: acl vfile: file /srv/vmail/user-mailboxes/company.eu/karsten.becker/mailboxes/dovecot-acl not found > Aug 24 00:01:37 mail01 dovecot: imap(karsten.becker(a)company.eu): Debug: acl vfile: file /etc/dovecot/global-acls/Folders/test01/aaa not found > Aug 24 00:01:37 mail01 dovecot: imap(karsten.becker(a)company.eu): Debug: acl vfile: reading file /srv/vmail/public_folders/test01/aaa/dovecot-acl Here's the filesystem structure in /srv/vmail: > root@mail01.compdmz.local:/srv/vmail# ls -l public_folders/test01/ > total 20 > drwxr-xr-x 5 vmail vmail 4096 2011-08-23 23:50 aaa > drwxr-xr-x 2 vmail vmail 4096 2011-08-23 21:45 cur > -rw-r--r-- 1 vmail vmail 25 2011-08-23 22:19 dovecot-acl > drwxr-xr-x 2 vmail vmail 4096 2011-08-23 21:45 new > drwxr-xr-x 2 vmail vmail 4096 2011-08-23 21:45 tmp > root@mail01.compdmz.local:/srv/vmail# Here's the content of dovecot-acl (there are another ones in subfolder aaa with the same content, inherited during creation): > authenticated lrwstipekx Here's my configuration of Dovecot: > # 2.0.13: /usr/local/dovecot-2.0.13/etc/dovecot/dovecot.conf > # OS: Linux 2.6.32-33-server x86_64 Ubuntu 10.04.3 LTS ext4 > doveconf: Warning: Dovecot was last started using /etc/dovecot/dovecot.conf, but this config is /usr/local/dovecot-2.0.13/etc/dovecot/dovecot.conf > auth_cache_negative_ttl = 0 > auth_cache_size = 10 M > auth_mechanisms = plain login > base_dir = /usr/local/dovecot/var/run/dovecot > dict { > acl = mysql:/etc/dovecot/dovecot-dict-shared-mailboxes-mysql.conf > expire = mysql:/etc/dovecot/dovecot-dict-expire-mysql.conf > quota = mysql:/etc/dovecot/dovecot-dict-quota-mysql.conf > } > log_timestamp = "%Y-%m-%d %H:%M:%S " > login_greeting = Company Institute > mail_attachment_dir = /srv/vmail/attachments > mail_attachment_hash = %{sha256} > mail_cache_min_mail_count = 2 > mail_debug = yes > mail_location = mdbox:/srv/vmail/user-mailboxes/%d/%n > mail_plugins = acl expire quota > mailbox_idle_check_interval = 1 mins > namespace { > inbox = yes > location = > prefix = > separator = / > subscriptions = yes > type = private > } > namespace { > list = children > location = mdbox:/srv/vmail/user-mailboxes/%%d/%%n > prefix = Users/%%d/%%n/ > separator = / > subscriptions = no > type = shared > } > namespace { > list = children > location = maildir:/srv/vmail/public_folders:INDEX=/srv/vmail/user-mailboxes/%d/%n/public_folders-seen:LAYOUT=fs > prefix = Folders/ > separator = / > subscriptions = no > type = public > } > passdb { > args = /etc/dovecot/dovecot-mysql.conf > driver = sql > } > plugin { > acl = vfile:/etc/dovecot/global-acls:cache_secs=300 > acl_shared_dict = proxy::acl > expire = Trash > expire2 = Trash/* > expire3 = Junk > expire4 = Junk/* > expire_dict = proxy::expire > quota = dict:User quota::proxy::quota > quota_rule = *:storage=10485760 > quota_rule2 = Trash:storage=+1048576 > quota_warning = storage=95%% quota-warning 95 %u > quota_warning2 = storage=80%% quota-warning 80 %u > } > postmaster_address = postmaster(a)company.eu > protocols = imap pop3 > service auth { > unix_listener /var/spool/postfix/private/auth_dovecot { > group = postfix > mode = 0660 > user = postfix > } > unix_listener auth-master { > mode = 0600 > user = vmail > } > user = root > } > service dict { > unix_listener dict { > mode = 0600 > user = vmail > } > } > service imap-login { > inet_listener imaps { > port = 993 > ssl = yes > } > process_min_avail = 2 > } > service imap { > vsz_limit = 512 M > } > service pop3-login { > inet_listener pop3s { > port = 995 > ssl = yes > } > } > service quota-warning { > executable = script /usr/local/bin/quota-warning.sh > user = vmail > } > ssl = required > ssl_cert = </etc/postfix/ssl/mail01.compdmz.local.crt > ssl_key = </etc/postfix/ssl/mail01.compdmz.local.key > userdb { > args = /etc/dovecot/dovecot-mysql.conf > driver = sql > } > verbose_proctitle = yes > protocol lda { > auth_socket_path = auth-master > postmaster_address = postmaster(a)company.eu > } > protocol imap { > imap_client_workarounds = delay-newmail > imap_max_line_length = 128 k > mail_plugins = acl expire quota imap_acl imap_quota > } > protocol pop3 { > pop3_client_workarounds = outlook-no-nuls oe-ns-eoh > }

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[Dovecot] acl with hierarchy separators mismatched config
by YAEGASHI Takeshi 24 Aug '11

24 Aug '11

Hi there, I'm testing dovecot 2.0.13 on Debian squeeze (deb from http://xi.rename-it.nl/debian) with the following doveconf -n. -------- # 2.0.13 (1449a2e2c1f5): /etc/dovecot/dovecot.conf # OS: Linux 2.6.26-2-openvz-amd64 i686 Debian 6.0.2 first_valid_uid = 8 mail_debug = yes mail_location = maildir:~/Maildir mail_plugins = listescape mail_log notify acl namespace { inbox = yes location = prefix = separator = / type = private } namespace { list = children location = maildir:/var/mail/public:INDEX=~/Maildir/public prefix = Public/ separator = / subscriptions = no type = public } passdb { driver = pam } plugin { acl = vfile } protocols = " imap" ssl = no userdb { args = uid=mail gid=mail home=/var/mail/private/%u driver = static } protocol imap { mail_plugins = listescape mail_log notify acl imap_acl } -------- My primary interest is acl and listescape enabled folders in the public namespace. I've chosen "/" as the hierarchy separator to support folder names with dots ("."). /var/mail/public is a maildir with the maildir++ layout where the separator is a dot ("."). So I set up intial acls and folders as follows: -------- # mkdir /var/mail/public # echo 'anyone lra' >/var/mail/public/dovecot-acl # maildirmake.dovecot /var/mail/public/.aaa # echo 'anyone lrwstipekxa' >/var/mail/public/.aaa/dovecot-acl # chown -R mail.mail /var/mail/public -------- But my attempt to create a mailbox under Public/aaa fails with "Permission denied". -------- # imtest -a yaegashi localhost S: * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN] Dovecot ready. C: C01 CAPABILITY S: * CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN S: C01 OK Pre-login capabilities listed, post-login capabilities have more. Please enter your password: C: A01 AUTHENTICATE PLAIN ?????????????????/ S: * CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS ACL RIGHTS=texk S: A01 OK Logged in Authenticated. Security strength factor: 0 . getacl Public * ACL "Public" "anyone" alr . OK Getacl completed. . getacl Public/aaa * ACL "Public/aaa" "anyone" akxeilprwtscd . OK Getacl completed. . create Public/aaa/bbb . NO [NOPERM] Permission denied -------- If the layout of /var/mail/public switched to "fs" where the separator is "/", mailbox creation succeeds as expected. -------- namespace { list = children location = maildir:/var/mail/public:INDEX=~/Maildir/public:LAYOUT=fs prefix = Public/ separator = / subscriptions = no type = public } -------- -------- # maildirmake.dovecot /var/mail/public/aaa # echo 'anyone lrwstipekxa' >/var/mail/public/aaa/dovecot-acl # chown -R mail.mail /var/mail/public # imtest -a yaegashi localhost .... . getacl Public * ACL "Public" "anyone" alr . OK Getacl completed. . getacl Public/aaa * ACL "Public/aaa" "anyone" akxeilprwtscd . OK Getacl completed. . create Public/aaa/bbb . OK Create completed. . getacl Public/aaa/bbb * ACL "Public/aaa/bbb" "anyone" akxeilprwtscd . OK Getacl completed. . create Public/aaa/1.2.3 . OK Create completed. . create Public/aaa/cur . NO Invalid mailbox name: Public/aaa/cur -------- Is this behavior expected? Misconfiguration or dovecot bug? I prefer the maildir++ layout with listescape as it's reserved-folder-name free (eg. cur new tmp). Regards, -- YAEGASHI Takeshi <yaegashi(a)debian.org>

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[Dovecot] LDA and auth-userdb socket permissions
by a.smith＠ukgrid.net 24 Aug '11

24 Aug '11

Hi, just wanted to check this as the wiki seems to have contradictory information. With respect to running the LDA as multiple UIDs the wiki says: [QUOTE]If you're using more than one UID for users, you're going to have problems running dovecot-lda, as most MTAs won't let you run dovecot-lda as root[/QUOTE] But in the example for the config file the text reads: [QUOTE] service auth { unix_listener auth-userdb { mode = 0600 user = vmail # User running dovecot-lda #group = vmail # Or alternatively mode 0660 + dovecot-lda user in this group } } [/QUOTE] So it says you can stick the LDA user just in the (vmail or whatever) group and that is enough. So you aren't restricted to a single UID for access anymore... I tested this and the later did not work, that is if I put my LDA user in the group for the auth-userdb socket with permissions 0660 I got an error back from dovecot saying that the owner was incorrect. So, as it stands I guess the bit about setting group should be removed from the wiki? Secondly, why doesn't this currently work? Why is the owner all important? thanks Andy.

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[Dovecot] dovecot and tcpwrappers
by Kees Lemmens 23 Aug '11

23 Aug '11

Hi, I used dovecot 1.x for quite a while and it worked fine. However, I used it through inetd and used hosts.allow/deny to restrict access to only certain groups of systems. Since yesterday I have dovecot 2.0.13. But in version 2.0.13 it seems that starting using inetd doesn't work anymore : I only get a strange error message if I try to connect using telnet : telnet localhost imap doveconf: Fatal: execvp(imap-login) failed: No such file or directory I tried a lot of things but couldn't get it going over inetd so I decided to start it directly using an init script, also because you say in the wiki this is (now) the preferred method. That indeed works fine, but I realised today that dovecot is now completely ignoring all my hosts.allow/deny settings and so is worldwide accessible ! Is dovecot indeed ignoring hosts.allow/deny ? And if so, how can I have the same amount of protection as I previously had with dovecot 1.x over inetd ? BTW: I tried to post on the mailinglist but it seems I can't access them it the moment, altough I did subscribe and login. Is there anything wrong ? Thanks for your reply ! -- With best regards, Kees Lemmens. ----------------------------------------------------------------------- Delft Institute of Applied Mathematics (DIAM), Faculty Electrical Engineering, Mathematics and Computer Science, Delft University of Technology, Delft, The Netherlands,

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[Dovecot] zlib plugin doesn't read concatenated .gz mailbox
by Dmitry Nezhevenko 23 Aug '11

23 Aug '11

Hi, I've observed that dovecot doesn't displays all mails from compressed via gzip mailbox (mbox). At the same time "mutt -f mailbox.gz" displays it correctly with all messages. I'm using archivemail to archive old mails. Internally it creates new "gzip" archive with "expired" messages and then concatenates it with archive. The easiest way to reproduce it without archivemail is to create two mailboxes, gzip them independently and then concatenate to one gzip archive. mutt, gunzip and other tools understands such archives. Also I've shared such mbox: http://dion.org.ua/uploads/2011/07/dovecot_test_gzip.gz It should contains ~20 messages. dovecot will "see" only two first. PS. % sudo dovecot --version 2.0.13 -- WBR, Dmitry

2 1

[Dovecot] dovecot's documentation dearth
by Postmaster 23 Aug '11

23 Aug '11

Hello. The first thing for me to say is thanks! I've been using dovecot since test 61 and it has basically performed flawlessly for me from day number 1. Dovecot makes me look like a genius sysadmin, especially compared to my colleagues struggling with exchange. So thanks, gracias, obrigado!! I'm working on a configuration for 2.0 and I'm finding the documentation somewhat difficult. I think it would be very helpful to me to have encountered a single page that detailed all available configuration sections. I don't know how to find out what the sections are, when to use them or what specifically they control. So far I've encountered... passdb plugin service protocol userdb local_name (and I think there is another one of these for ips) The service section itself would benefit from a single page detailing all of the possible types of service sections available. The next problem I've had is discovering that several parts of dovecot have no documentation at all even though they are standalone executables run by root. config, log, and ssl_params all run as root but there is also anvil and they look to me like they could support listening on a port if inet_interfaces is defined. You can say, "Relax fella, trust me. These programs are all part of dovecot and are run only if they're needed." Then I'll say, "Yes but I'm the administrator. I need to know how the parts fit together to know if the system's broken." Then you say, "Well that makes sense, but the things you're talking about aren't really configured. They are mostly internal to dovecot, they just happen to be broken out into external programs. You may as well be asking for documentation on a specific function in a library. If that's what you want, you can read through the source code." Well I guess that would be one solution. The bottom line is that it gives me an uncomfortableness to not be able to control or explain the operation of the software I'm supposedly administering. Take the program named log (which should be named dovecot-log or something less generic), it is launched even though I've specified syslog in the configuration. Logging is not interrupted when the process is killed. So, why is it running? What is it doing? Why does it need root? How do I control it? I think these are all good questions for an administrator to ask. That's my feedback for what it's worth, but mostly, thanks again for dovecot!

2 1

[Dovecot] Default and per-User sieve script
by Patrick Westenberg 23 Aug '11

23 Aug '11

Hi guys, is there any way to configure Dovecot to process the default sieve script and, after that, a user specific script? I have a default script to sort spam into a spam folder but if a user specific script is present, the default script is ignored. sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_global_path = /usr/local/etc/dovecot/sieve/default.sieve Regards Patrick

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[Dovecot] dovecot deadlock with procmail
by kunal verma 23 Aug '11

23 Aug '11

I m using dovecot 1.0.7. I m having problems in mail delivery to my mail server locally. When a user sends a mail few mails are in mail Q for longer period of time. The local delivery agent(*procmail*) is trying to deliver the mail at regular interval but it is unable to deliver. But as soon as I *restart* *dovecot* the mails in the Q are delivered immediately. I suspect it is because of locking of *mbox* file of users by dovecot. How to overcome this problem as mails are some mails are taking hours to be delivered?? please let me know the solution. Kunal Verma

2 1

[Dovecot] Large Mailbox Slow
by Matt 23 Aug '11

23 Aug '11

Doubt if there is any answer to this but will ask anyway. Have a few pop3 accounts with thousands of messages. Its slow when checking email naturally. Are there any tweaks to speed it up? I imagine there is an exchange of the message and header list which is the slow down. Too bad the list could not be compressed with gzip or something first. I think http has an option similar to that. Just asking.

3 3

[Dovecot] Dovecot Postfix and ssl_require_client_cert
by mezzo 23 Aug '11

23 Aug '11

Hi, I have a working mail system with postfix 2.7 and dovecot 1.2.15. I use secure connections for imap and smtp. When I try to use client certificate authorisation I have some problems. As soon as I enable the dovecot feature ssl_require_client_cert I have to present a valid certificate to receive or send email. Receiving emails works fine, but I can not send emails any more. The only way I could get this to work was to disable smtpd_sasl_auth_enable so postfix did not tries to get authorisation from dovecot. This way I can not have sasl authorisation for localnet and client certificate authorisation from extern. The reson seams to be that postfix does not sent the valid-client-cert along with the other parameter that are needed to satisfy the auth-process of dovecot. I found a few threads from 2008 where this problem is discussed but without a final solution. Is there a way to enable ssl_require_client_cert in dovecot and have smtpd_sasl_auth_enable=yes in postfix? Better would be a way to tell dovecot only to use ssl_require_client_cert during the imap autorisation. I did not get it to work. I miss something? Cheers mezzo -- View this message in context: http://old.nabble.com/Dovecot-Postfix-and-ssl_require_client_cert-tp3230766… Sent from the Dovecot mailing list archive at Nabble.com.

2 1

[Dovecot] Update indexes with dovecot 1.1
by Angel L. Mateo 23 Aug '11

23 Aug '11

Hello, I have a farm of dovecot 1.1 servers (debian lenny). Mailboxes are in Maildir format. Is there any way to manually update indexes? Does it worth? I mean... Our problem is that mail is delivered via dovecot lda, but, because we have a farm of servers, we don't guarantee that mail is delivered through the same server that the user is using for his imap connection, so the imap server could have this index unupdated. So I want to force an update (or at least nearly updated) in order to have the index updated in all servers at the time the user get to work. -- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de la Información _o) y las Comunicaciones Aplicadas (ATICA) / \\ http://www.um.es/atica _(___V Tfo: 868887590 Fax: 868888337

3 5

[Dovecot] Disconnected: Too many invalid IMAP commands
by Steve Fatula 23 Aug '11

23 Aug '11

Using current Apple mail 4.5 as client to Dovecot 2.0.13 I see lots of these messages in the log file for one machine and account. Near as I can tell, the client still works (it's mine), but, the messages concern me. Is there some known issue with Apple mail, or, if not, how to capture the information needed to debug? Sample log entires for my user matching on the message: Aug 20 16:28:36 host2 dovecot: imap(soho.steve): Disconnected: Too many invalid IMAP commands. bytes=3242/14672 Aug 20 16:28:43 host2 dovecot: imap(soho.steve): Disconnected: Too many invalid IMAP commands. bytes=14219/231327 Aug 20 16:29:50 host2 dovecot: imap(soho.steve): Disconnected: Too many invalid IMAP commands. bytes=640/1968 Aug 20 16:29:57 host2 dovecot: imap(soho.steve): Disconnected: Too many invalid IMAP commands. bytes=3521/2024 Aug 20 16:30:04 host2 dovecot: imap(soho.steve): Disconnected: Too many invalid IMAP commands. bytes=6690/3415 Aug 20 16:30:05 host2 dovecot: imap(soho.steve): Disconnected: Too many invalid IMAP commands. bytes=5098/15294 Aug 20 16:30:06 host2 dovecot: imap(soho.steve): Disconnected: Too many invalid IMAP commands. bytes=706/15684 Steve

3 2