December 2008 - dovecot

[Dovecot] dovecot 1.2 Alpha4 shared folders
by Diederick van Dijk 13 Dec '08

13 Dec '08

Hi, I'm trying to setup shared folders with alpha4 but didn't succeed until now. Here is my dovecot -n : # 1.2.alpha4: /etc/dovecot.conf # OS: Linux 2.6.26.5 i686 Mandriva Linux 2009.0 base_dir: /var/run/dovecot/ protocols: imap imaps pop3 pop3s managesieve lda listen(default): * listen(imap): * listen(pop3): * listen(managesieve): *:2000 ssl_cert_file: /etc/ssl/imap/ipop3sd.pem ssl_key_file: /etc/ssl/imap/ipop3sd.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 login_executable(managesieve): /usr/lib/dovecot/managesieve-login mail_location: maildir:~/Maildir mail_debug: yes mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(pop3): /usr/lib/dovecot/pop3 mail_executable(managesieve): /usr/lib/dovecot/managesieve mail_plugins(default): quota imap_quota acl mail_plugins(imap): quota imap_quota acl mail_plugins(pop3): mail_plugins(managesieve): 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 mail_plugin_dir(managesieve): /usr/lib/dovecot/modules/managesieve namespace: type: private separator: / inbox: yes list: yes subscriptions: yes namespace: type: shared separator: / prefix: Shared/%%u/ location: maildir:%%h/Maildir:INDEX=~/Maildir/shared/%%u list: yes subscriptions: yes auth default: passdb: driver: pam userdb: driver: passwd plugin: quota: maildir:User quota quota_rule: *:storage=1048576 quota_rule2: Trash:storage=102400 acl_shared_dict: file:/var/lib/dovecot/shared/mailboxes acl: vfile:/home/%%d/Maildir sieve: ~/.dovecot.sieve sieve_storage: ~/sieve A list doesn't display any folder in Shared. What should I put into /var/lib/dovecot/shared/mailboxes ? Is the acl: vfile:/home/%%d/Maildir ? Should I put some file(s) is the users Maildir directory ? Thanks, Diederick

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[Dovecot] Possible bug in Maildir++ quota?
by Ulrich Zehl 13 Dec '08

13 Dec '08

While researching a possible bug in our custom-made Maildir++ expiration script, I found the following in src/plugins/quota/quota-maildir.c. | static const char * | maildir_list_next(struct maildir_list_context *ctx, time_t *mtime_r) | { | [...] | *mtime_r = st.st_size; | return str_c(ctx->path); | } As far as I unterstand, this seems incorrect, because the value in mtime_r is used, for example, in maildirs_check_have_changed to check whether any maildirs or folders have changed. If this isn't a bug, please satisfy my own curiosity and tell me what I'm missing. Ulrich

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[Dovecot] assertion failed
by Antonio Casado Rodríguez 13 Dec '08

13 Dec '08

Hi all, I have seen this in log: dovecot: Dec 03 06:12:57 Error: IMAP(maurirrr): file mail-index-view-sync.c: line 666 (mail_index_view_sync_end): asser tion failed: (view->log_file_offset >= view->map->hdr.log_file_int_offset) dovecot: Dec 03 06:12:57 Error: IMAP(maurirrr): Raw backtrace: /usr/libexec/dovecot/imap [0x461d5e] -> /usr/libexec/dov ecot/imap [0x461acc] -> /usr/libexec/dovecot/imap(mail_index_view_sync_end+0x224) [0x44bf24] -> /usr/libexec/dovecot/im ap(index_mailbox_sync_deinit+0x3a) [0x43b58a] -> /usr/libexec/dovecot/imap(imap_sync_deinit+0x1e) [0x41bc0e] -> /usr/li bexec/dovecot/imap [0x41bd05] -> /usr/libexec/dovecot/imap(cmd_sync+0x97) [0x41bef7] -> /usr/libexec/dovecot/imap [0x41 2562] -> /usr/libexec/dovecot/imap(cmd_fetch+0x2b5) [0x412875] -> /usr/libexec/dovecot/imap(cmd_uid+0x48) [0x415278] -> /usr/libexec/dovecot/imap [0x415777] -> /usr/libexec/dovecot/imap [0x415809] -> /usr/libexec/dovecot/imap(_client_inpu t+0x6d) [0x415e4d] -> /usr/libexec/dovecot/imap(io_loop_handler_run+0x106) [0x467046] -> /usr/libexec/dovecot/imap(io_l oop_run+0x18) [0x466548] -> /usr/libexec/dovecot/imap(main+0x3f2) [0x41d632] -> /lib64/libc.so.6(__libc_start_main+0xf4 ) [0x3015c1d8b4] -> /usr/libexec/dovecot/imap [0x411149] dovecot: Dec 03 06:12:57 Error: child 22973 (imap) killed with signal 6 In RedHat Enterprise 5.2 # dovecot -n # 1.0.13: /etc/dovecot.conf log_path: /Correo/log/dovecot/dovecot.log info_log_path: /Correo/log/dovecot/dovecot.info protocols: imaps pop3 managesieve ssl_cert_file: /etc/pki/dovecot/certs/mycert.ual.es.crt ssl_key_file: /etc/pki/dovecot/private/mycert.ual.es.key login_dir: /var/run/dovecot/login login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login login_executable(managesieve): /usr/libexec/dovecot/managesieve-login login_process_per_connection: no max_mail_processes: 2048 first_valid_uid: 200 mail_location: maildir:%h/.. mail_executable(default): /usr/local/sbin/post-login-imap-dovecot mail_executable(imap): /usr/local/sbin/post-login-imap-dovecot mail_executable(pop3): /usr/local/sbin/post-login-pop3-dovecot mail_executable(managesieve): /usr/libexec/dovecot/managesieve mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): quota mail_plugins(managesieve): mail_plugin_dir(default): /usr/lib64/dovecot/imap mail_plugin_dir(imap): /usr/lib64/dovecot/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3 mail_plugin_dir(managesieve): /usr/lib64/dovecot/managesieve imap_client_workarounds(default): outlook-idle delay-newmail imap_client_workarounds(imap): outlook-idle delay-newmail imap_client_workarounds(pop3): outlook-idle imap_client_workarounds(managesieve): outlook-idle sieve_storage(default): sieve_storage(imap): sieve_storage(pop3): sieve_storage(managesieve): ~/sieve sieve(default): sieve(imap): sieve(pop3): sieve(managesieve): ~/.dovecot.sieve namespace: type: private separator: / location: maildir:%h/.. inbox: yes auth default: passdb: driver: pam userdb: driver: passwd plugin: quota: maildir:storage=1048576

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[Dovecot] fine tuning for 10 users?
by badeguruji 13 Dec '08

13 Dec '08

Hello, How can i fine tune dovecot for less then 10 users? or is there no need? Also, is there any smtp client which can be used with it for a open-source standalone server? i want very-small foot print+secure server, qmail and sendmail are dinos, and i felt xmail is trying to do everything. (as we are less then 10 users here.) i liked round-cube for webmail. i would appreciate all suggestions and pointers. thank you. -B ________________________________

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[Dovecot] Problem with imap running at 100%
by nuitari-dovecot＠nuitari.net 13 Dec '08

13 Dec '08

I was doing some checks on a server and found an imap process running at 100%, kill -9 was unable to kill it. hammer ~ # lsof -p 1918 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME imap 1918 vpopmail cwd DIR 8,2 96 539699 /var/vpopmail/domains/maxpersuasion.com/kec imap 1918 vpopmail rtd DIR 8,2 856 2 / imap 1918 vpopmail txt REG 8,2 851832 3646578 /usr/libexec/dovecot/imap imap 1918 vpopmail mem REG 8,2 1330888 2752698 /lib64/libc-2.8.so imap 1918 vpopmail mem REG 8,2 14520 2753738 /lib64/libdl-2.8.so imap 1918 vpopmail mem REG 8,2 114960 2753800 /lib64/ld-2.8.so imap 1918 vpopmail 2w FIFO 0,5 0t0 574015 pipe imap 1918 vpopmail 6u 0000 0,6 0 10 anon_inode strace & gdb can't seem to attach to the process. The process was started 2 days ago. It is dovecot 1.1.6

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[Dovecot] imap quota makes the Alarm clock expire
by Magnus Appelquist 12 Dec '08

12 Dec '08

Hello list, I have a strange problem with dovecot and quota. The error message is not obvious... After a couple of seconds when I try to start dovceot, I get this: root@taleira:~# /etc/init.d/dovecot start Alarm clock If I uncomment the "imap_quota and quota" in dovecot.conf everything seem to work fine: protocol imap { listen = *:143 ssl_listen = *:993 # problem pa taleira01: konstigt... #mail_plugins = quota imap_quota mail_plugins = } I can't really figure out what's wrong. There's nothing in the log and dovecots error message is not so talkative. It took a while to figure out that it was the quota that caused the problem. I guess there is something with the underlying FS, but all kernel modules are loaded as far as I know. The maildir is on a nfs-mounted disk. The whole system is on a XEN machine and I have multipe copies of this image running on other machines with no problem. Strace gives me: root@taleira:~# strace dovecot .... lstat64("/var/run/dovecot//login", {st_mode=S_IFDIR|0750, st_size=60, ...}) = 0 open("/var/run/dovecot//login", O_RDONLY|O_NONBLOCK|O_LARGEFILE| O_DIRECTORY|0x80000) = 4 fstat64(4, {st_mode=S_IFDIR|0750, st_size=60, ...}) = 0 getdents64(4, /* 3 entries */, 4096) = 88 lstat64("/var/run/dovecot//login/ssl-parameters.dat", {st_mode=S_IFREG| 0644, st_size=230, ...}) = 0 getdents64(4, /* 0 entries */, 4096) = 0 close(4) = 0 geteuid32() = 0 pipe([4, 5]) = 0 fcntl64(4, F_GETFD) = 0 fcntl64(4, F_SETFD, FD_CLOEXEC) = 0 fcntl64(5, F_GETFD) = 0 fcntl64(5, F_SETFD, FD_CLOEXEC) = 0 dup(2) = 6 fcntl64(6, F_GETFD) = 0 fcntl64(6, F_SETFD, FD_CLOEXEC) = 0 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID| SIGCHLD, child_tidptr=0xf7e666f8) = 3343 close(6) = 0 close(5) = 0 alarm(5) = 0 wait4(-1, 0xffbd7e9c, 0, NULL) = ? ERESTARTSYS (To be restarted) --- SIGALRM (Alarm clock) @ 0 (0) --- +++ killed by SIGALRM +++ Process 3342 detached Finally, my system is: root@taleira:~# dovecot --version 1.1.4 root@taleira:~# uname -a Linux taleira 2.6.26-1-xen-amd64 #1 SMP Sat Nov 8 21:20:04 UTC 2008 x86_64 GNU/Linux Any ideas? /Magnus

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[Dovecot] freebsd 7, panics - kqueue?
by mike-maillist＠nux.co.uk 12 Dec '08

12 Dec '08

Hi, We have a issue with a server pretty much just running dovecot, there's about 250gb of maildirs which has about 200 simultaneous connections to it running on freebsd 7. The machine has stayed up for about 8 days before it panics but sometimes panics after about 24 hours. We are running a PAE kernel (with ULE scheduler) as the machine has 2 (4 core processors) and 8gb of ram, dovecot is compiled with kqueue support which i suspect is causing the panics. We are currently trying with a GENERIC kernel to see if this addresses the issue but looking back through the dovecot lists there seems to be some issue with kqueue, freebsd and dovecot, i am tempted to simply disable kqueue in dovecot but am not sure on the performance penalties. Please see the freebsd pr for the kgdb dumps - for both dumps the current process was imap, and the second one seemed to hint towards a problem with kqueue but im not a c or kernel hacker: http://www.freebsd.org/cgi/query-pr.cgi?pr=129550 --- snip of what i think is relevent from the dump --- (kgdb) list *0xc04c4c4d 0xc04c4c4d is in knlist_remove_kq (/usr/src/sys/kern/kern_event.c:1615). 1610 if (!kqislocked) 1611 KASSERT((kn->kn_status & (KN_INFLUX|KN_DETACHED)) == KN_INFLUX, 1612 ("knlist_remove called w/o knote being KN_INFLUX or already removed")); 1613 if (!knlislocked) 1614 knl->kl_lock(knl->kl_lockarg); 1615 SLIST_REMOVE(&knl->kl_list, kn, knote, kn_selnext); 1616 kn->kn_knlist = NULL; 1617 if (!knlislocked) 1618 knl->kl_unlock(knl->kl_lockarg); 1619 if (!kqislocked) (kgdb) mail# dovecot -n # 1.1.7: /usr/local/etc/dovecot.conf # OS: FreeBSD 7.0-RELEASE-p6 i386 ssl_cert_file: /etc/ssl/dovecot.pem ssl_key_file: /etc/ssl/dovecot.pem login_dir: /var/run/dovecot/login login_executable: /usr/local/libexec/dovecot/imap-login login_process_per_connection: no login_processes_count: 20 login_max_processes_count: 256 login_max_connections: 512 max_mail_processes: 1024 verbose_proctitle: yes first_valid_uid: 89 last_valid_uid: 89 first_valid_gid: 89 last_valid_gid: 89 mail_privileged_group: mail imap_client_workarounds: delay-newmail outlook-idle netscape-eoh tb-extra-mailbox-sep auth default: passdb: driver: vpopmail userdb: driver: vpopmail

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[Dovecot] How to setting shared Maildir
by mlus 12 Dec '08

12 Dec '08

Hello I'm dovecot bigginer from courier-imap. I used shared maildir in courier like this. 1) create maildir # maildirmake -S /home/shared 2) create maildirshared file # echo 'SHARE /home/shared ' > /etc/courier/maildirshared (use tabcode) 3) edit imapd config file IMAP_UMASK=022 IMAP_SHAREDINDEXFILE=/etc/courier/shared/index in courier, only 3 step work . I read http://wiki.dovecot.org

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[Dovecot] How to setting shared Maildir
by mlus 12 Dec '08

12 Dec '08

Hello I'm dovecot bigginer from courier-imap. I used shared maildir in courier like this. 1) create maildir # maildirmake -S /home/shared 2) create maildirshared file # echo 'SHARE /home/shared ' > /etc/courier/maildirshared (use tabcode) 3) edit imapd config file IMAP_UMASK=022 IMAP_SHAREDINDEXFILE=/etc/courier/shared/index in courier, only 3 step. I read wiki (http://wiki.dovecot.org) about shared maildir, for example Shared mailboxes Access Control Lists Namespaces ..... but I can't understand at all . Please explain by using the concrete illustration ? thank you.

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[Dovecot] Dovecot authentication not supported in Entourage
by jan gestre 12 Dec '08

12 Dec '08

Hi Guys, I recently configured an mail server running postfix + dovecot + mysql + postfixadmin, everything is running ok except for Mac Entourage clients which is a PITA IMO, I always get a authentication not supported error while thunderbird and outlook on windows don't. Any ideas or workaround? my dovecot version is dovecot-1.0.7-2.el5. here's the output of dovecot.conf and dovecot-sql.conf respectively: # dovecot -n # 1.0.7: /etc/dovecot.conf base_dir: /var/run/dovecot/ log_timestamp: %Y-%m-%d %H:%M:%S ssl_cert_file: /etc/postfix/ssl/mail-cert.pem ssl_key_file: /etc/postfix/ssl/mail-key.pem login_dir: /var/run/dovecot//login login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login first_valid_uid: 150 last_valid_uid: 150 mail_access_groups: mail mail_location: maildir:/home/virtualmail/%d/%u mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_plugin_dir(default): /usr/lib/dovecot/imap mail_plugin_dir(imap): /usr/lib/dovecot/imap mail_plugin_dir(pop3): /usr/lib/dovecot/pop3 pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh auth default: mechanisms: plain login digest-md5 user: nobody passdb: driver: sql args: /etc/dovecot-sql.conf userdb: driver: sql args: /etc/dovecot-sql.conf socket: type: listen client: path: /var/run/dovecot/auth-client mode: 432 user: postfix group: mail master: path: /var/run/dovecot/auth-master mode: 432 user: virtualmail group: mail # cat /etc/dovecot-sql.conf [root@mail ~]# cat /etc/dovecot-sql.conf driver = mysql connect = host=localhost dbname=postfix user=dovecot password=dovecot69 default_pass_scheme = MD5 user_query = SELECT '/home/virtualmail/%d/%n' as home, 'maildir:/home/virtualmail/%d/%n' as mail, 150 AS uid, 12 AS gid, concat('dirsize:storage=', quota) AS quota FROM mailbox WHERE username = '%u' AND active = '1' # Get the password password_query = SELECT username as user, password, '/home/virtualmail/%d/%n' as userdb_home, 'maildir:/home/virtualmail/%d/%n' as userdb_mail, 150 as userdb_uid, 12 as userdb_gid FROM mailbox WHERE username = '%u' AND active = '1' TIA. Jan

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