- dovecot - dovecot.org

[Dovecot] connection dropped by imap
by Mantas 30 Jun '07

30 Jun '07

hello, when i create imap account in mail client (ex: outlook, thunderbird) it's allright. but if i want login with this account to webmail (i have 2 webmail: squirrelmail and roundcube) commonly i get error. squirrelmail say: Connection droped by imap. roundcube say nothing(white screen). But sometimes i can login. and i see one thing... when i restart apache, i can login above 1-2 hours, but later i can't login. i restart apache again and again i can login 1-2 hours. please help

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[Dovecot] Document variable modifiers in pop3_uidl_format
by Ben Winslow 29 Jun '07

29 Jun '07

Attached is a trivial patch to document the fact one can use variable modifiers in pop3_uidl_format. -- Ben Winslow <rain(a)bluecherry.net>

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[Dovecot] wiki.dovecot.org double-escapes capcha info
by Ben Winslow 29 Jun '07

29 Jun '07

The "capcha" on wiki.dovecot.org seems to be double-escaping HTML entities in the informational message, such that the wiki displays "Captcha to prevent wiki spam, write Dovecot here:" [sic.] When I dutifully entered "Dovecot," it didn't work, saying "You didn't provide the correct captcha. Use the browser's Back button and try again, or register an account to avoid this." [sic] It took a few minutes for me to realize what was going on and simply enter "Dovecot" for the capcha... -- Ben Winslow <rain(a)bluecherry.net>

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[Dovecot] dovecot help
by Andy Fadich 29 Jun '07

29 Jun '07

Hello, I have a mail server which I upgraded yesterday. OLD: Redhat 9 sendmail (very old version) UW ipop3d usermin with readmail module for webmail access (very old version) NEW: Fedora Core 6 sendmail 8.13.8 Usermin for webmail again dovecot 1.0.0 # /etc/dovecot.conf protocols: pop3 login_dir: /var/run/dovecot/login login_executable: /usr/libexec/dovecot/pop3-login mail_location: mbox:/home/%u/mail:INBOX=/var/spool/mail/%u mail_executable: /usr/libexec/dovecot/pop3 mail_plugin_dir: /usr/lib/dovecot/pop3 pop3_uidl_format: %08Xv%08Xu auth default: passdb: driver: pam userdb: driver: passwd Everything is working great, besides a few glitches here and there. However, When accessing mailboxes via webmail (usermin) an email shows up with a subject of DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA. As far as I can tell, this is an IMAP folder directory portion of the mailbox file that should be hidden. We don't use IMAP at all, and it is confusing people when they see this message that never was in their webmail before. Anyone know how to hide, remove or otherwise fix? Thank you in advance. Andy

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[Dovecot] FreeBSD NFS file locking mechanism
by Tony Tsang 29 Jun '07

29 Jun '07

Hi all, I have some machines running FreeBSD and dovecot deployed. User's home dir is on NFS mount and I've found that dovecot only works with dotlock file locking mechanism, fcntl and flock failed. Now it causes problem with thunderbird (thunderbird is cachine connections) waiting forever and I noticed that dovecot is trying to acquire a lock but unsuccessful since the lock file is in place. Is it possible to use file locking other than dotlock on FreeBSD NFS mounted homedir? How do I achieve this? Thanks a lot. Tony Tsang.

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[Dovecot] Server 1.0.1 migration: Maildir : UID inserted in the middle of mailbox
by damien chambe - EGS 29 Jun '07

29 Jun '07

Hello all, Since a migration from dovecot 1.rc16 to Dovecot 1.0.1 + new server, every day I have a lot of errors like this : Jun 21 17:42:34 dovecot1 deliver(damien.chambe(a)egs-gestion.fr): msgid=<467A9B3E.5070605(a)egs-gestion.fr>: saved mail to INBOX Jun 21 17:42:34 dovecot1 postfix/pipe[10242]: 92DD11FA8B: to=<damien.chambe(a)egs-gestion.fr>, relay=dovecot, delay=0, status=sent (egs-gestion.fr) Jun 21 17:42:34 dovecot1 postfix/qmgr[2724]: 92DD11FA8B: removed Jun 21 17:42:37 dovecot1 dovecot: IMAP(damien.chambe(a)egs-gestion.fr): Maildir /mnt/baie/hula/dovecot/maildir/damien.chambe sync: UID inserted in the middle of mailbox (374 > 1, file = 1182330228.P30307Q0M224874.dovecot1:2,ST) Jun 21 17:42:37 dovecot1 dovecot: IMAP(damien.chambe(a)egs-gestion.fr): Disconnected: Mailbox is in inconsistent state, please relogin. Jun 21 17:51:41 dovecot1 dovecot: imap-login: Login: user=<damien.chambe(a)egs-gestion.fr>, method=PLAIN, rip=10.6.1.104, lip=10.5.3.38 Jun 21 17:51:41 dovecot1 dovecot: IMAP(damien.chambe(a)egs-gestion.fr): Corrupted index cache file /opt/dovecot/indexes/damien.chambe/.INBOX/dovecot.index.cache: indexid changed After this error, all UID are regenerated. And, when the user logs in, all headers are sent back to the client (IMAP / thunderbird 1.5.x or 2.0.0.4). No email are lost or duplicated, but it cause a huge traffic on our DSL lines, and user are complaining... There's also other errors related to UID: Jun 21 16:11:01 dovecot1 deliver(pr(a)egs-gestion.fr): rename(/mnt/baie/hula/dovecot/maildir/pr/dovecot-uidlist.lock, /mnt/baie/hula/dovecot/maildir/pr/dovecot-uidlist) failed: No such file or directory Jun 21 16:11:01 dovecot1 deliver(pr(a)egs-gestion.fr): file_dotlock_replace(/mnt/baie/hula/dovecot/maildir/pr/dovecot-uidlist) failed: No such file or directory Jun 21 16:11:02 dovecot1 deliver(pr(a)egs-gestion.fr): /mnt/baie/hula/dovecot/maildir/pr/dovecot-uidlist: next_uid was lowered (374 -> 373) Jun 21 16:11:02 dovecot1 deliver(pr(a)egs-gestion.fr): msgid=<467A85CB.50009(a)fica.fr>: saved mail to INBOX Jun 21 16:11:02 dovecot1 dovecot: IMAP(pr(a)egs-gestion.fr): rename(/mnt/baie/hula/dovecot/maildir/pr/dovecot-uidlist.lock, /mnt/baie/hula/dovecot/maildir/pr/dovecot-uidlist) failed: No such file or directory Here's the context: Our Dovecot server had to be changed due to a hardware problem I was forced to use SUSE SLES 10 for the new one, instead of SLES 9 on the old server. X86-32 I've kept the same configuration files for postfix, dovecot. We use dovecot deliver. Old postfix version was 2.1.1, now I have 2.2.9 During the migration, I've changed dovecot 1.rc16 to dovecot 1.0.0 When I saw this error, I upgraded to dovecot 1.0.1, but same problem (I use suse rpm packages ) I have 400 mailbox, all Maildir. The problem happens 50 times a day, so not on every mail received. I store mails on NFS, and index on local disk. There's only one dovecot server, so no multiple access. I've tried to remove all index files, and remove dovecot-uidlist, all is correctly re-created, but the problem remains. Could it be an NFS locking problem ? Since only mail are stored on maildir + NFS, and index on local disk, so I didn't set lock_method or nmap_disable Could it be related to this: see email from from Doug Concil : [Dovecot] NFS lock contention for dovecot-uidlist on may 17 , 2007 ? dovecot -n # 1.0.1: /etc/dovecot/dovecot.conf protocols: imap pop3 ssl_disable: yes disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable(default): /usr/lib/dovecot/imap-login login_executable(imap): /usr/lib/dovecot/imap-login login_executable(pop3): /usr/lib/dovecot/pop3-login login_user: dovecotlogin login_process_per_connection: no login_processes_count: 5 max_mail_processes: 2048 first_valid_uid: 120 first_valid_gid: 12 default_mail_env: maildir:/mnt/baie/hula/dovecot/maildir/%n:INDEX=/opt/dovecot/indexes/%n mail_location: maildir:/mnt/baie/hula/dovecot/maildir/%n:INDEX=/opt/dovecot/indexes/%n mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(pop3): /usr/lib/dovecot/pop3 mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): mail_plugin_dir(default): /usr/lib/dovecot/modules/imap mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3 pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %08Xu%08Xv auth default: verbose: yes passdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf userdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf socket: type: listen master: path: /var/run/dovecot/auth-master mode: 384 user: dovecot group: mail plugin: quota: maildir:storage=1500000:messages=40000 Thanks, -- Cordialement, Damien Chambe EGS 42 bld jules janin - BP 240 - 42006 Saint Etienne Cedex 1 Tel : 04 77 49 48 16 Fax : 04 77 49 48 45 Site institutionnel : http://www.groupe-laurent.com Site catalogue : http://ecat.groupe-laurent.com

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[Dovecot] lda and mail_location
by Mark Edwards 28 Jun '07

28 Jun '07

I have the following set in the main level of my dovecot.conf file: mail_location = maildir:/var/mail/virtual/%u I decided to enable the lda protocol for local delivery from postfix, so I could use sieve plugins. The lda protocol seems to ignore settings in the rest of the dovecot.conf file, however, such as the above. Unless lda has a pre-existing maildir mailbox, it can't create one. How do I give lda defaults to follow, if the above statement doesn't do it? Here is the output of dovecot -n Thanks! ---- # /etc/dovecot/dovecot.conf log_timestamp: %Y-%m-%d %H:%M:%S protocols: imap pop3 imaps pop3s listen: 127.0.0.1 ssl_listen: [::] ssl_cert_file: /etc/ssl/private/mail.antsclimbtree.com.pem ssl_key_file: /etc/ssl/private/mail.antsclimbtree.com.pem login_dir: /var/run/dovecot/login login_executable(default): /usr/lib/dovecot/imap-login login_executable(imap): /usr/lib/dovecot/imap-login login_executable(pop3): /usr/lib/dovecot/pop3-login valid_chroot_dirs: /var/mail verbose_proctitle: yes first_valid_uid: 8 last_valid_uid: 8 first_valid_gid: 8 last_valid_gid: 8 mail_extra_groups: mail mail_location: maildir:/var/mail/virtual/%u maildir_copy_with_hardlinks: yes mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(pop3): /usr/lib/dovecot/pop3 mail_plugin_dir(default): /usr/lib/dovecot/modules/imap mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3 imap_client_workarounds(default): outlook-idle delay-newmail imap_client_workarounds(imap): outlook-idle delay-newmail imap_client_workarounds(pop3): outlook-idle pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %08Xu%08Xv pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh namespace: type: private separator: / inbox: yes auth default: mechanisms: plain login username_format: %Lu verbose: yes 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: mail group: mail

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[Dovecot] UW-IMAP conversion part 2
by Andrew Z 28 Jun '07

28 Jun '07

FWIW, the Dovecot 1.0.1 convert plugin works with all my UW-IMAP mboxes moved to ~/mail. At least that shows that my system otherwise works. Also, I wrote a script to move the mboxes and preserve the IMAP subscriptions. (I hope the list accepts the attached script.)

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[Dovecot] Locking problems on Dovecot 1.x in Maildir
by Ronald MacDonald 28 Jun '07

28 Jun '07

Hi list, Overall, everything works fine, and all the emails are delivered without anything messing up. But then, from time to time, the transaction logs for some users become corrupted, meaning emails cannot be read at all from dovecot. With a bit of a search on google, it seems to be a problem with locking on the transaction log. The individual files are fine - it's maildir, so the chances of 2 accesses on the same file are near impossible. But the problem seems to come when things get a bit busy, and inevitably, the transaction log tends to get corrupted all too often now for me to just go in and delete the log, and start afresh. I've addressed the issue temporarily by putting the index in memory by the :INDEX=MEMORY as opposed to a static file. This isn't ideal, but it seems to save the system going up in arms. Is there an alternative to using this system? Ronald. -- Ronald MacDonald http://www.rmacd.com/ 0777 235 1655

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[Dovecot] convert plugin problem from UW-IMAP
by Andrew Z 28 Jun '07

28 Jun '07

Though there are conversion scripts, I'd like to give the convert plugin a chance. I have Dovecot 1.0.1 on Trustix Secure Linux 2.2 (Linux 2.4.27), and we had UW IMAP 2002e. Dovecot seems to work OK (e.g. I can add copy messages to it), but things break when I activate the convert plugin. The Wiki suggests convert_mail = mbox:~/:INBOX=/var/mail/%u # <--- locally changed to /var/spool/mail/%u convert_skip_broken_mailboxes=yes However, when I start Dovecot, then I get: Starting Dovecot Imap: ILoading modules from directory: /usr/lib/dovecot/imap IModule loaded: /usr/lib/dovecot/imap/lib20_convert_plugin.so IEffective uid=65534, gid=65534, home= Imbox: data=~/:INBOX=/var/spool/mail/dump-capability Imbox: root=, index=, inbox=/var/spool/mail/dump-capability Eopen(/.temp.localhost.localdomain.7834.96dd6ef6b7dfc402) failed: Permission denied Error: imap dump-capability process returned 89 Fatal: Invalid configuration in /etc/dovecot.conf So based on a tip on the mailing list, I try convert_mail = mbox:/home/users/%u:INBOX=/var/spool/mail/%u But the session fails, and Thunderbird can't connect properly. /var/log/dovecot.log Jun 26 11:39:25 Info: IMAP(andrewz): Module loaded: /usr/lib/dovecot/imap/lib20_convert_plugin.so Jun 26 11:39:25 Info: IMAP(andrewz): Effective uid=501, gid=501, home=/home/users/andrewz Jun 26 11:39:25 Info: IMAP(andrewz): mbox: data=/home/users/andrewz:INBOX=/var/spool/mail/andrewz Jun 26 11:39:25 Info: IMAP(andrewz): mbox: root=/home/users/andrewz, index=/home/users/andrewz, inbox=/var/spool/mail/andrewz Jun 26 11:39:25 Info: IMAP(andrewz): mbox: data=/home/users/andrewz:INBOX=/var/spool/mail/andrewz Jun 26 11:39:25 Info: IMAP(andrewz): mbox: root=/home/users/andrewz, index=/home/users/andrewz, inbox=/var/spool/mail/andrewz Jun 26 11:39:25 Info: IMAP(andrewz): maildir: data=/home/users/andrewz/Maildir Jun 26 11:39:25 Info: IMAP(andrewz): maildir: root=/home/users/andrewz/Maildir, index=/home/users/andrewz/Maildir, control=, inbox= Jun 26 11:39:25 Info: imap-login: Login: user=<andrewz>, method=PLAIN, rip=192.168.0.230, lip=192.168.0.60 /var/log/mail/errors Jun 26 11:39:25 localhost dovecot: IMAP(andrewz): Mailbox conversion: Couldn't copy mailbox Maildir/cur/1182879232.P7263Q0M965055.localhost.localdomain:2,Sa: BUG: Unknown internal error Jun 26 11:39:25 localhost dovecot: IMAP(andrewz): Mailbox conversion: Couldn't create mailbox directory Maildir..Trash Jun 26 11:39:25 localhost dovecot: IMAP(andrewz): Sending log messages too fast, throttling.. Jun 26 11:39:25 localhost dovecot: child 7888 (imap) returned error 89 I also tried convert_mail = mbox:%h:INBOX=/var/spool/mail/%u , but that acts like mbox:/home/users/%u. Then, I tried removing ~/Maildir . That doesn't help. When I connect via telnet, I get "1 OK Logged in.", and the remote host closes the connection. Also, I am not clear how Dovecot knows when to stop. With mbox in ~/mail, then dovecot can rename it, but we have mbox in ~/ which of course cannot be renamed. (I suggest moving mboxes to a new subdirectory.) I rebuild Dovecot based from a modified Fedora RPM .spec. My configuration is: # 1.0.1: /etc/dovecot.conf info_log_path: /var/log/dovecot.log protocols: imap ssl_disable: yes disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable: /usr/libexec/dovecot/imap-login mail_location: maildir:~/Maildir mail_debug: yes mail_plugins: convert auth default: passdb: driver: pam userdb: driver: passwd plugin: convert_mail: mbox:/home/users/%u:INBOX=/var/spool/mail/%u convert_skip_broken_mailboxes: yes Andrew

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