- dovecot - dovecot.org

Re: [Dovecot] v1.1 max connections per user
by Bill Boebel 01 Jul '07

01 Jul '07

On Sat, June 30, 2007 7:50 pm, Charles Marcus said: > Timo Sirainen, on 6/30/2007 7:25 PM, said the following: >> On Sat, 2007-06-30 at 19:11 -0400, Charles Marcus wrote: >>> Timo Sirainen, on 6/30/2007 6:43 PM, said the following: >>>> v1.1 has now: >>>> >>>> # Maximum number of connections allowed for a user. The limits are enforced >>>> # separately for IMAP and POP3 connections, so you can move this setting >>>> # inside protocol {} to have separate settings for them. NOTE: The user names >>>> # are compared case-sensitively, so make sure your userdb returns usernames >>>> # always using the same casing so users can't bypass this limit! >>>> #mail_max_user_connections = 10 >>>> >>>> Is 10 a good default? >>> I'm assuming this is per IP? >> >> No. I'm not sure if it should. Perhaps. It's mostly intended to prevent >> unintentional abuse by stupid clients, so having 3+ thunderbirds open in >> different locations with each having 5 connections should probably be >> allowed. > > Ok - you said 10 was the default - but then said that 15 (3 TBirds x 5) > connections should be allowed, which is more than 10... so... you just > meant that one could accommodate that by upping this limit to 15? I like 15. That way it is high and isn't as likely to affect existing installations unless they manually set it to something lower. Or if you want to have a separate default for POP vs IMAP, I'd use 5 for POP and 15 for IMAP.

3 2

[Dovecot] Copyright notices in code
by Timo Sirainen 30 Jun '07

30 Jun '07

I thought about committing this change to all .c files: Removed all Copyright Timo Sirainen comments. They weren't always correct and the year numbers were rarely updated when something was changed. Copyright is owned by the creator by default in practically all countries, there's no need to advertise it everywhere. Can anyone think of reasons why this wouldn't be a good idea?

7 7

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

30 Jun '07

apache log say nothing. dovecot log : dovecot: Jun 30 10:56:06 Info: auth(default): passwd(diana(a)aaaaa.lt,127.0.0.1): unknown user dovecot: Jun 30 10:56:06 Info: auth(default): passwd(diana(a)aaaaa.lt,127.0.0.1): unknown user dovecot: Jun 30 10:56:06 Info: imap-login: Login: user=<diana(a)aaaaa.lt>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured dovecot: Jun 30 10:56:06 Info: IMAP(diana(a)aaaaa.lt): Disconnected: Logged out dovecot: Jun 30 10:56:07 Info: auth(default): passwd(diana(a)aaaaa.lt,127.0.0.1): unknown user dovecot: Jun 30 10:56:07 Info: auth(default): passwd(diana(a)aaaaa.lt,127.0.0.1): unknown user dovecot: Jun 30 10:56:07 Info: imap-login: Login: user=<diana(a)aaaaa.lt>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured dovecot: Jun 30 10:56:07 Info: IMAP(diana(a)aaaaa.lt): Disconnected: Logged out dovecot: Jun 30 10:57:07 Info: auth(default): passwd(diana(a)aaaaa.lt,127.0.0.1): unknown user dovecot: Jun 30 10:57:07 Info: auth(default): passwd(diana(a)aaaaa.lt,127.0.0.1): unknown user dovecot: Jun 30 10:57:07 Info: imap-login: Login: user=<diana(a)aaaaa.lt>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured when error "connection dropped by imap" appear, allways login procedure repeated 3 times (in log file). On Fri, 29 Jun 2007 23:24:12 +0200, Philipp Wollermann <philipp(a)igowo.de> wrote: > Mantas wrote: >>> 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. >>> > So.. what exactly appears in your system logfiles in /var/log when you > try to login and it does not work? Shouldn't that be the first thing to > look for? :) > > Regards, > Philipp

1 0

[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

2 2

[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>

1 0

[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>

1 0

[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

4 9

[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.

4 4

[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

3 4

[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

2 13