- dovecot - dovecot.org

[Dovecot] imap locking spool?
by Mark Hedges 05 Mar '09

05 Mar '09

How does IMAP lock the /var/spool/mail/user file? Here's my problem: I'm writing a script to expire old or oversize mail through a series of archive folders. I don't want to take the whole server down to do this, nor does it seem like I would have to lock the user out entirely if I can manage to emulate the locks correctly. I am able to lock /var/spool/mail/user (and ~user/mail/*) from procmail, dovecot popmail, and openwebmail using dotlocks. What do I do to prevent dovecot imap from writing the spool and various mbox files while my script is running? Just posix fcntl on the various files? I'm trying to use Mail::Box in perl which I'm having some problems with, corresponding with the developer, but if anyone has any easy way out I would appreciate the advice very much! Mark

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[Dovecot] failed assertion in 1.1.8: istream.c: line 81
by Alan Ferrency 05 Mar '09

05 Mar '09

Hello, We're having a problem in Dovecot 1.1.8 with a failed assertion on certain mbox format mailboxes. It happens both with deliver when it attempts to delier to the mailbox, and with IMAP connections for the affected box (though I'm not sure what they're doing at the time). Mar 3 12:55:26 <snip> dovecot: Panic: IMAP(<snip>): file istream.c: line 81 (i_stream_read): assertion failed: (_stream->skip != _stream->pos) This is on FreeBSD 6.2, without any nfs. The IMAP client is Squirrel Mail, but as I said, the assertion occurs with deliver as well. Apparently, moving the inbox out of the way fixed the problem for a while, but then it came back. Clearing out the dovecot index files seemed not to have any effect. I have a core dump available for deliver; here's a backtrace: #0 0x282bbecb in kill () from /lib/libc.so.6 #1 0x282bbe68 in raise () from /lib/libc.so.6 #2 0x282bab78 in abort () from /lib/libc.so.6 #3 0x080b7ad8 in default_fatal_finish (type=LOG_TYPE_PANIC, status=0) at failures.c:150 #4 0x080b7dbb in i_syslog_fatal_handler (type=LOG_TYPE_PANIC, status=0, fmt=0x80ca9a0 "file %s: line %d (%s): assertion failed: (%s)", args=0xbfbfe2a4 "{\215\r\bQ") at failures.c:308 #5 0x080b7c37 in i_panic (format=0x80ca9a0 "file %s: line %d (%s): assertion failed: (%s)") at failures.c:197 #6 0x080bb8a1 in i_stream_read (stream=0x8102e28) at istream.c:93 #7 0x080bbd3d in i_stream_read_data (stream=0x8102e28, data_r=0xbfbfe350, size_r=0xbfbfe354, threshold=0) at istream.c:322 #8 0x0806d85b in istream_raw_mbox_get_body_size (stream=0x8102e28, expected_body_size=11013) at istream-raw-mbox.c:562 #9 0x080736dd in mbox_sync_do (sync_ctx=0xbfbfe640, flags=0) at mbox-sync.c:151 #10 0x08075700 in mbox_sync (mbox=0x8103028, flags=0) at mbox-sync.c:1833 #11 0x08070001 in mbox_save_init (_t=0x80f2980, flags=0, keywords=0x0, received_date=1236108538, timezone_offset=0, from_envelope=0x80e6100 "<snip>", input=0x80f6f28, dest_mail=0x8106028, ctx_r=0x0) at mbox-save.c:318 #12 0x282ee17f in quota_save_init (t=0x80f2980, flags=0, keywords=0x0, received_date=-1, timezone_offset=0, from_envelope=0x80e6100 "<snip>", input=0x80f6f28, dest_mail=0x8106028, ctx_r=0xbfbfe9f0) at quota-storage.c:236 #13 0x0808e36d in mailbox_save_init (t=0x5, flags=0, keywords=0x0, received_date=-1, timezone_offset=0, from_envelope=0x80e6100 "<snip>", input=0x80f6f28, dest_mail=0x8106028, ctx_r=0xbfbfe9f0) at mail-storage.c:726 #14 0x0808c34a in mail_storage_copy (t=0x80f2980, mail=0xbfbfe9f0, flags=0, keywords=0x0, dest_mail=0x8106028) at mail-copy.c:28 #15 0x282ee08a in quota_copy (t=0x80f2980, mail=0x80fd028, flags=0, keywords=0x0, dest_mail=0x8106028) at quota-storage.c:180 #16 0x080590a4 in deliver_save (namespaces=0x80f7028, storage_r=0xbfbfeb60, mailbox=0x80d0eeb "INBOX", mail=0x80fd028, flags=0, keywords=0x0) at deliver.c:237 #17 0x0805a90c in main (argc=5, argv=0xbfbfec14) at deliver.c:1093 Does anyone have any clues on how to debug this further? I wonder if the original bug reporter removed both the mailbox and the index files at the same time; the current explanation is less than satisfactory. Thanks, Alan Ferrency pair Networks, Inc.

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[Dovecot] problems to users want connect after not activity in dovecot
by maximatt 05 Mar '09

05 Mar '09

hi, some users report me some issues about when they try to conecct to dovecot. they come early and when want to connect to theirs account, receive a message from mua (ms-outlook) sayind "the pop server not responds in 60 seconds, Do you want to wait other 60 seconds for a server response?"... later, they can connect to server without other problems... looking the logs, i not have much information: in file "dovecot-info.log": : : dovecot: Feb 06 20:45:55 Info: IMAP(user1): trash plugin: Added 'Sent Messages' with priority 3 dovecot: Feb 06 20:45:55 Info: IMAP(user1): maildir: data=/var/vmail/mydomain/user1 dovecot: Feb 06 20:45:55 Info: IMAP(user1): maildir: root=/var/vmail/mydomain/user1, index=/var/vmail/mydomain/user1, control=, inbox= dovecot: Feb 06 20:45:55 Info: IMAP(user1): Disconnected: Logged out dovecot: Feb 06 20:45:55 Info: IMAP(user1): Disconnected: Logged out dovecot: Feb 07 07:47:50 Info: pop3-login: Disconnected: Inactivity: method=PLAIN, rip=xxx.xxx.xxx.xxx lip=xxx.xxx.xxx.xxx, TLS dovecot: Feb 07 07:51:09 Info: pop3-login: Disconnected: Inactivity: method=PLAIN, rip=xxx.xxx.xxx.xxx, lip=xxx.xxx.xxx.xxx, TLS dovecot: Feb 07 07:52:30 Info: pop3-login: Disconnected: Inactivity: method=PLAIN, rip=xxx.xxx.xxx.xxx, lip=xxx.xxx.xxx.xxx, TLS dovecot: Feb 07 07:57:26 Info: pop3-login: Disconnected: Inactivity: method=PLAIN, rip=xxx.xxx.xxx.xxx, lip=xxx.xxx.xxx.xxx, TLS dovecot: Feb 07 08:27:26 Info: pop3-login: Login: user=<user2>, method=PLAIN, rip=xxx.xxx.xxx.xxx, lip=xxx.xxx.xxx.xxx, TLS dovecot: Feb 07 08:27:26 Info: POP3(user2): Loading modules from directory: /etc/dovecot/lib/dovecot/pop3 dovecot: Feb 07 08:27:26 Info: POP3(user2): Module loaded: /etc/dovecot/lib/dovecot/pop3/lib10_quota_plugin.so dovecot: Feb 07 08:27:26 Info: POP3(user2): Effective uid=504, gid=504 dovecot: Feb 07 08:27:26 Info: POP3(user2): maildir: data=/var/vmail/user2/user2 : : in file "dovecot.log": no reports at this range of hours.. I use dovecot using pop and imap protocols with tls and storing users information in a ldap server... i have some days trying to fix them but without succes :( ¿What it's happend? ¿How could fix them? Thanks in advance!!! -- Salu2 ;)

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[Dovecot] deliver to root
by Philipp Kolmann 05 Mar '09

05 Mar '09

Hi, we use dovecot 1.1.11 on a RH Server with sendmail. Local delivery is done with deliver: Mlocal, P=/usr/local/libexec/dovecot/deliver, F=lsDFMAw5:/|@qSPfhn9, S=EnvFromL/HdrFromL, R=EnvToL/HdrToL, T=DNS/RFC822/X-Unix, A=deliver -d $u This setup works without issues for us, but mail to root has a problem with deliver: deliver(root): Mar 04 16:31:31 Error: userdb(root) returned 0 as uid deliver(root): Mar 04 16:31:31 Error: userdb(root) returned 0 as gid deliver(root): Mar 04 16:31:31 Error: User root is missing UID (set mail_uid) Is it generally not possible to use deliver to deliver mail to root? Thanks Philipp

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[Dovecot] Outlook cant delete folders
by Romer Ventura 05 Mar '09

05 Mar '09

Hello, It has been brought to my attention that outlook users cant delete folders from their mailbox. They can move them around and erase emails, but when it comes to folders, they cant.. Any ideas..? # dovecot --version 1.1.7 # dovecot -n # 1.1.7: /etc/dovecot/dovecot.conf # OS: Linux 2.6.16.60-0.21-xenpae i686 SUSE Linux Enterprise Server 10 (i586) login_dir: /var/run/dovecot/login login_executable: /usr/lib/dovecot/imap-login mail_uid: vmail mail_gid: vmail mail_location: maildir:~/Maildir/ mail_plugins: lazy_expunge imap_client_workarounds: delay-newmail outlook-idle netscape-eoh namespace: type: private separator: / inbox: yes list: yes subscriptions: yes namespace: type: private separator: / prefix: .EXPUNGED/ location: maildir:/home/vmail/%Ud/%Ln/Maildir/expunged list: yes subscriptions: yes namespace: type: private separator: / prefix: .DELETED/ location: maildir:/home/vmail/%Ud/%Ln/Maildir/deleted list: yes subscriptions: yes namespace: type: private separator: / prefix: .DELETED/.EXPUNGED/ location: maildir:/home/vmail/%Ud/%Ln/Maildir/deleted/expunged list: yes subscriptions: yes auth default: mechanisms: plain login passdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf userdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix master: path: /var/run/dovecot/auth-master mode: 384 user: vmail group: vmail plugin: lazy_expunge: .EXPUNGED/ .DELETED/ .DELETED/.EXPUNGED/

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Re: [Dovecot] failed assertion in 1.1.8: istream.c: line 81
by Timo Sirainen 05 Mar '09

05 Mar '09

On Wed, 2009-03-04 at 10:12 -0500, Alan Ferrency wrote: > Hi. > > I applied the patch, and the assertion did move to istream-raw-mbox.c. > > I've attached a script of the gdb session with the prints you requested. Thanks. See if applying this patch helps: http://hg.dovecot.org/dovecot-1.1/raw-rev/632777217f7b Keep my previous debug patch also in case this doesn't fix it.

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[Dovecot] set \Seen flag on mail
by J.P. Trosclair 05 Mar '09

05 Mar '09

I'm looking for a way to set the \Seen flag on certain mail no matter what. Currently I'm using a global sieve script to do this. From what I've read, there is no way to enforce the global script if the user creates their own sieve script. More details: I have a postfix transport that along with sender_bcc_maps and recipient_bcc_maps uses deliver to create a read only archive of user's mail. The mail intended to be archived is stored in a per user imap folder called "Archives" that uses the ACL plugin to make the messages there read only. In addition to that, I want the mail marked as \Seen upon delivery so that user's who subscribe to the Arhives folder don't see new mail indications and what not when mail is delivered there. Is there a better way to set the \Seen flag other than the global sieve script since it can be overridden by the user? -- J.P. Trosclair

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[Dovecot] tls and auth plain login
by Bradley Giesbrecht 04 Mar '09

04 Mar '09

Hello List, I want to allow plain text passwords only on ssl/tls. Is it possible to have: auth default { mechanisms = cram-md5 ntlm ...... } and then over-ride this when connection is ssl/tls to allow plain and login? I have tried adding "mechanisms = plain login cram-md5 ntlm" to "protocol imaps{}" as an example but I get an error that the protocol does not exist. I read somewhere today that dovecot enables plain automatically over secure connections (ssl/tls) but I'm not seeing it. Also, "auth default" suggests that "auth something_else" is possible. I'm probably just doing a poor job of research but I'm not finding the answers I'm seeking. Using postfix and lda. # openssl s_client -connect localhost:993 # a01 capability * CAPABILITY IMAP4rev1 SASL-IR SORT THREAD=REFERENCES MULTIAPPEND UNSELECT LITERAL+ IDLE CHILDREN NAMESPACE LOGIN-REFERRALS UIDPLUS LIST- EXTENDED I18NLEVEL=1 AUTH=CRAM-MD5 AUTH=NTLM a01 OK Capability completed. Note about below, fd limit is increased management script. # dovecot -n # 1.1.3: /opt/local/etc/dovecot/dovecot.conf Warning: fd limit 256 is lower than what Dovecot can use under full load (more than 768). Either grow the limit or change login_max_processes_count and max_mail_processes settings log_path: /opt/local/var/ispbox/log/mail/dovecot.log protocols: imap imaps pop3 pop3s ssl_cert_file: /opt/local/etc/ssl/certs/dovecot.pem ssl_key_file: /opt/local/etc/ssl/private/dovecot.pem login_dir: /opt/local/var/run/dovecot/login login_executable(default): /opt/local/libexec/dovecot/imap-login login_executable(imap): /opt/local/libexec/dovecot/imap-login login_executable(pop3): /opt/local/libexec/dovecot/pop3-login mail_location: dbox:/opt/local/var/ispbox/mail/%d/%n/dbox mail_executable(default): /opt/local/libexec/dovecot/imap mail_executable(imap): /opt/local/libexec/dovecot/imap mail_executable(pop3): /opt/local/libexec/dovecot/pop3 mail_plugin_dir(default): /opt/local/lib/dovecot/imap mail_plugin_dir(imap): /opt/local/lib/dovecot/imap mail_plugin_dir(pop3): /opt/local/lib/dovecot/pop3 auth default: mechanisms: cram-md5 ntlm passdb: driver: sql args: /opt/local/etc/dovecot/dovecot_mysql.conf userdb: driver: prefetch userdb: driver: sql args: /opt/local/etc/dovecot/dovecot_mysql.conf socket: type: listen client: path: /opt/local/var/spool/postfix/private/auth mode: 432 user: _postfix group: _postfix master: path: /opt/local/var/run/dovecot/auth-master mode: 384 user: _vmail Thanks for any tips, //Bradley

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[Dovecot] no auth attempts: log
by Mathieu Kretchner 04 Mar '09

04 Mar '09

Hello, is there any option that could disable such log : Mar 2 16:47:31 imap dovecot: imap-login: Disconnected (no auth attempts): rip=127.0.0.1, lip=127.0.0.1, secured, port=143 Mar 2 16:48:31 imap last message repeated 2 times Mar 2 16:49:32 imap last message repeated 2 times Mar 2 16:51:02 imap last message repeated 3 times Mar 2 16:52:02 imap last message repeated 2 times Thanks.

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[Dovecot] Shared mailbox documentation updated
by Timo Sirainen 04 Mar '09

04 Mar '09

http://wiki.dovecot.org/SharedMailboxes Anything missing? Anything still need clarifying?

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