June 2008 - dovecot - dovecot.org

[Dovecot] Upgrade to 1.1 maildir & shared folders problems
by sami＠medusa.tutka.fi 21 Jul '08

21 Jul '08

Hello, We recently upgraded to Dovecot 1.1 from 1.0.5 and we are having few issues: 1) Maildir's are not created anymore for new users if they dont excits, the directories where created before, is this a configuration issue? 2) Cannot subscribe to shared folders, if currently subscribed they work fine but cannot re-subscribe, also i noticed that the control directory for the namespace is not created anymore, before it was, any ideas? //sami conf: 1.1.1: /usr/local/etc/dovecot.conf base_dir: /var/run/dovecot/ protocols: imap pop3 ssl_disable: yes disable_plaintext_auth: no login_dir: /var/run/dovecot//login login_executable(default): /usr/local/libexec/dovecot/imap-login login_executable(imap): /usr/local/libexec/dovecot/imap-login login_executable(pop3): /usr/local/libexec/dovecot/pop3-login login_greeting: ready. login_processes_count: 5 verbose_proctitle: yes first_valid_uid: 1000 mail_location: maildir:~/:INDEX=/var/dovecot/index/%u:CONTROL=/var/dovecot/control/%u mail_nfs_storage: yes mail_executable(default): /usr/local/libexec/dovecot/imap mail_executable(imap): /usr/local/libexec/dovecot/imap mail_executable(pop3): /usr/local/libexec/dovecot/pop3 mail_process_size: 1024 mail_plugins(default): acl quota imap_quota mail_plugins(imap): acl quota imap_quota mail_plugins(pop3): mail_plugin_dir(default): /usr/local/lib/dovecot/imap mail_plugin_dir(imap): /usr/local/lib/dovecot/imap mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3 imap_client_workarounds(default): outlook-idle, delay-newmail imap_client_workarounds(imap): outlook-idle, delay-newmail imap_client_workarounds(pop3): namespace: type: private separator: / location: maildir:~/:INDEX=/var/dovecot/index/%u:CONTROL=/var/dovecot/control/%u inbox: yes list: yes subscriptions: yes namespace: type: public separator: / prefix: shared/ location: maildir:/var/mail/jaetut:INDEX=/var/dovecot/jaetut/index/%u:CONTROL=/var/dovecot/jaetut/control/%u list: yes subscriptions: yes auth default: passdb: driver: sql args: /usr/local/etc/dovecot-sql.conf userdb: driver: sql args: /usr/local/etc/dovecot-sql.conf userdb: driver: prefetch plugin: quota: fs acl: vfile:/usr/local/etc/dovecot-acls

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[Dovecot] v1.1.rc13 released
by Timo Sirainen 20 Jul '08

20 Jul '08

http://dovecot.org/releases/1.1/rc/dovecot-1.1.rc13.tar.gz http://dovecot.org/releases/1.1/rc/dovecot-1.1.rc13.tar.gz.sig There's always time for one more release candidate. :) I was planning on releasing v1.1.0 a couple of minutes before summer solstice (23:59 UTC according to Wikipedia). Maybe it'll bring luck to the release. :) - mbox: Fixed a crash when adding a new X-IMAPbase: header with keywords. - Message parser: Fixed assert-crash if cached MIME structure was broken. - Squat: Potential crashfix with mmap_disable=yes.

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[Dovecot] exim, LDA, quota
by Marcin Gryszkalis 20 Jul '08

20 Jul '08

Hi I configured Exim with dovecot LDA and added quota (dict/mysql). It works but it seems that dovecot is not reporting situation back to exim process - it looks like Exim returns OK(accepted) to smtp sender before the message is actually delivered - if the quota is exceeded then LDA drops the mail and sends DSN. Is it possible to change that behavior to report problem immediately (within SMTP session)? regards -- Marcin Gryszkalis, PGP 0x9F183FA3 jabber jid:mg@fork.pl, gg:2532994 http://the.fork.pl

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[Dovecot] group ownership of new shared folders
by Simon Michelson 20 Jul '08

20 Jul '08

Between versions 1.0.4 and 1.0.5 there were some changes to the way dovecot-shared group ownership is propogated into new maildirs. Changing the group of new_dir/{tmp,new,cur} was added, but changing the group of new_dir itself was removed. As far as I can tell, this latter change may have been accidental. This patch puts the functionality back, in the 1.1 tree. ---------------------------------- # HG changeset patch # User Simon Michelson <simon(a)inpher.com> # Date 1214444574 -3600 # Branch HEAD # Node ID 1dae5712e81daacb6923f500c0997aca6853ec3a # Parent 3c06e14c4731ee1ffe6d8c36bbdc711e3190cb2c reinstate code to apply gid of dovecot-shared to new maildir directory diff -r 3c06e14c4731 -r 1dae5712e81d src/lib-storage/index/maildir/maildir-storage.c --- a/src/lib-storage/index/maildir/maildir-storage.c Tue Jun 24 13:37:55 2008 +0300 +++ b/src/lib-storage/index/maildir/maildir-storage.c Thu Jun 26 02:42:54 2008 +0100 @@ -539,6 +539,10 @@ static int maildir_create_shared(struct umask(old_mask); return -1; } + if (chown(dir, (uid_t)-1, gid) < 0) { + mail_storage_set_critical(storage, + "chown(%s) failed: %m", dir); + } for (i = 0; i < N_ELEMENTS(maildir_subdirs); i++) { path = t_strconcat(dir, "/", maildir_subdirs[i], NULL); if (chown(path, (uid_t)-1, gid) < 0) {

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[Dovecot] No log for hitting login_max_processes_count?
by Adam McDougall 20 Jul '08

20 Jul '08

I think today just due to increased use, my mail servers hit login_max_processes_count. It wasn't obvious what was happening, logins just weren't acting like they should and sometimes would get disconnected before given a prompt from the server. Something made me think to check if I had too many of certain dovecot processes and I found I had 128 imap-login processes on both servers, but nothing in the logs seemed to point that out for me. Should there be? It would have been alot easier to debug. Also, this seems to be from general use, doesn't seem like a DoS, so is this just a setting I should keep an eye on and increase it by reasonable amounts as needed? Thanks.

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[Dovecot] dovecot-auth assertion failed
by Eric 20 Jul '08

20 Jul '08

Hello, I have been running some tests on a new Dovecot v1.0.13 server and have seen the following message appear in the logs a few times. It appears to occur when there are a lot of requests being sent to the LDAP servers from both Dovecot and Sendmail (I am guessing about this, since I have also seen "Server busy" messages regarding LDAP auth). dovecot: auth(default): file db-ldap.c: line 310 (ldap_conn_retry_requests): assertion failed: (conn->connected) dovecot: auth(default): Raw backtrace: dovecot-auth [0x806daf1] -> dovecot-auth [0x806da0c] -> dovecot-auth [0x8059607] -> dovecot-auth [0x8059b1d] -> dovecot-auth [0x8059b7b] -> dovecot-auth(io_loop_handler_run+0x110) [0x8070c90] -> dovecot-auth(io_loop_run+0x1c) [0x80701cc] -> dovecot-auth(main+0x2fe) [0x805b01e] -> /lib/libc.so.6(__libc_start_main+0xdc) [0x3efdec] -> dovecot-auth [0x8051161] dovecot: child 23178 (auth) killed with signal 6 Dovecot seems to recover from this error and continues to handle auth requests properly. Thanks, Eric

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[Dovecot] Problems with dovecot deliver.
by Dpoke 20 Jul '08

20 Jul '08

Hello all. I am using dovecot 1.1.rc4. Some of my mail deliver without errors. Other mail during its deliver give next errors in logs: Postfix log Jun 16 18:34:17 postfix/local[2730]: A394E292002: to=<dpoke(a)localhost.mail.com>, orig_to=<dpoke@localhost>, relay=local, delay=3013, delays=3008/1.3/0/2.9, dsn=4.3.0, status=deferred (temporary failure) Jun 16 18:34:17 postfix/local[2731]: B5FE7292004: to=<dpoke(a)localhost.mail.com>, orig_to=<dpoke@localhost>, relay=local, delay=2998, delays=2994/0.98/0/2.6, dsn=4.3.0, status=deferred (temporary failure) Jun 16 18:34:18 postfix/local[2731]: 28723292003: to=<dpoke(a)localhost.mail.com>, orig_to=<dpoke@localhost>, relay=local, delay=2993, delays=2989/3.5/0/0.72, dsn=4.3.0, status=deferred (temporary failure) ................................................ Deliver log. (Also I found no other useful information relaying this problem in other dovecot logs.) deliver(dpoke): Jun 16 18:34:15 Info: maildir: data=/opt/home/dpoke//Maildir deliver(dpoke): Jun 16 18:34:15 Info: maildir++: root=/opt/home/dpoke//Maildir, index=, control=, inbox=/opt/home/dpoke//Maildir deliver(dpoke): Jun 16 18:34:15 Info: maildir: data=/opt/home/dpoke//Maildir deliver(dpoke): Jun 16 18:34:15 Info: maildir++: root=/opt/home/dpoke//Maildir, index=, control=, inbox=/opt/home/dpoke//Maildir deliver(dpoke): Jun 16 18:34:16 Error: open(/tmp/dovecot.deliver..1213626856.2732.ad657cfa5dccbc61) failed: Permission denied deliver(dpoke): Jun 16 18:34:16 Error: copy: i_stream_read() failed: Permission denied deliver(dpoke): Jun 16 18:34:16 Info: msgid=: save failed to INBOX: Internal error occurred. Refer to server log for more information. [2008-06-16 18:34:14] deliver(dpoke): Jun 16 18:34:16 Error: open(/tmp/dovecot.deliver..1213626856.2733.ad657cfa5dccbc61) failed: Permission denied deliver(dpoke): Jun 16 18:34:16 Error: copy: i_stream_read() failed: Permission denied deliver(dpoke): Jun 16 18:34:16 Info: msgid=: save failed to INBOX: Internal error occurred. Refer to server log for more information. [2008-06-16 18:34:14] deliver(dpoke): Jun 16 18:34:17 Info: maildir: data=/opt/home/dpoke//Maildir deliver(dpoke): Jun 16 18:34:17 Info: maildir++: root=/opt/home/dpoke//Maildir, index=, control=, inbox=/opt/home/dpoke//Maildir deliver(dpoke): Jun 16 18:34:17 Info: maildir: data=/opt/home/dpoke//Maildir deliver(dpoke): Jun 16 18:34:17 Info: maildir++: root=/opt/home/dpoke//Maildir, index=, control=, inbox=/opt/home/dpoke//Maildir deliver(dpoke): Jun 16 18:34:17 Error: open(/tmp/dovecot.deliver..1213626857.2737.712b51aaca368d64) failed: Permission denied deliver(dpoke): Jun 16 18:34:17 Error: copy: i_stream_read() failed: Permission denied deliver(dpoke): Jun 16 18:34:17 Info: msgid=: save failed to INBOX: Internal error occurred. Refer to server log for more information. [2008-06-16 18:34:17] deliver(dpoke): Jun 16 18:34:17 Error: open(/tmp/dovecot.deliver..1213626857.2736.712b51aaca368d64) failed: Permission denied deliver(dpoke): Jun 16 18:34:18 Error: copy: i_stream_read() failed: Permission denied deliver(dpoke): Jun 16 18:34:18 Info: msgid=: save failed to INBOX: Internal error occurred. Refer to server log for more information. [2008-06-16 18:34:17] ..................................................... This is my dovecot configuration: # 1.0.3: /opt/etc/dovecot.conf protocols: imap listen: 192.168.1.1 ssl_disable: yes disable_plaintext_auth: no login_dir: /opt/var/run/dovecot/login login_executable: /opt/libexec/dovecot/imap-login login_user: nobody login_processes_count: 1 auth default: verbose: yes debug: yes passdb: driver: passwd-file args: /opt/etc/passwd.imap userdb: driver: passwd-file args: /etc/passwd How can I fix this mail delivering problem? Thanks in advance for any ideas/suggestions/answers. And sorry for my bad English ;) -- Ilya Galanin

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[Dovecot] Multiple auth client sockets
by Ulrich Zehl 20 Jul '08

20 Jul '08

I use two seperate Postfix instances as MSAs (so that different policies are simpler to configure), and both of them require Dovecot SASL support. Since Postfix' smtpd is chrooted (at least in the Debian package), the client socket needs to be somewhere under the instance's queue_directory. This means I need two different auth client socket paths. When I simply specify two "client { ... }" in dovecot.conf, the second takes precedence over the first. Besides using a second dovecot instance, which I'd like to avoid, what ways are there to run a second client socket? Ulrich

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[Dovecot] BUG: messages created with permissions not respecting umask
by Thomas Vander Stichele 20 Jul '08

20 Jul '08

Using dovecot 1.0rc15, together with postfix and dovecot-lda. umask is set to 0007. This should ensure directories and files get created with read/write permissions for both user and group. However, dovecot-lda writes files with 600 permissions, instead of 660. So dovecot does not seem to respect the umask configuration property for local mail delivery. In my particular case, I have vmail:vmail own the mail directories, and a backup user part of the vmail group. However the backup user cannot read the mails and thus back them up properly. Suggestions: - respect the umask for file delivery as well - alternatively, take the parent directory's permissions, strip executable bits, and apply to file Thanks Thomas

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[Dovecot] v1.1.0 released
by Timo Sirainen 18 Jul '08

18 Jul '08

http://dovecot.org/releases/1.1/dovecot-1.1.0.tar.gz http://dovecot.org/releases/1.1/dovecot-1.1.0.tar.gz.sig Two hours later than promised, I slept longer than intended. :) No changes since v1.1.rc13. Below are the largest changes since v1.0: * After Dovecot v1.1 has modified index or dovecot-uidlist files, they can't be opened anymore with Dovecot versions earlier than v1.0.2. * See doc/wiki/Upgrading.1.1.txt (or for latest changes, http://wiki.dovecot.org/Upgrading/1.1) for list of changes since v1.0 that you should be aware of when upgrading. + IMAP: Added support for UIDPLUS and LIST-EXTENDED extensions. + IMAP SORT: Sort keys are indexed, which makes SORT commands faster. + When saving messages, update cache file immediately with the data that we expect client to fetch later. + NFS caches are are flushed whenever needed. See mail_nfs_storage and mail_nfs_index settings. + Out of order command execution (SEARCH, FETCH, LIST), nonstandard command cancellation (X-CANCEL <tag>) + IMAP: STATUS-IN-LIST draft implementation + Expire plugin can be used to keep track of oldest messages in specific mailboxes. A nightly run can then quickly expunge old messages from the mailboxes that have them. The tracking is done using lib-dict, so you can use either Berkeley DB or SQL database. + Namespaces are supported everywhere now. + Namespaces have new list and subscriptions settings. + Full text search indexing support with Lucene and Squat backends. + OTP and S/KEY authentication mechanisms (by Andrey Panin). + mbox and Maildir works with both Maildir++ and FS layouts. You can change these by appending :LAYOUT=maildir++ or :LAYOUT=fs to mail_location. + LDAP: Support templates in pass_attrs and user_attrs + Support for listening in multiple IPs/ports. + Quota plugin rewrite: Support for multiple quota roots, warnings, allow giving storage size in bytes or kilo/mega/giga/terabytes, per-mailbox quota rules. + Filesystem quota backend supports inode limits, group quota and RPC quota for NFS. + SEARCH and SORT finally compare non-ASCII characters case-insensitively. We use i;unicode-casemap algorithm. + Config files support splitting values to multiple lines with \

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