- dovecot - dovecot.org

[Dovecot] PAM authentication problems
by Tom Lobato 07 Oct '08

07 Oct '08

Hi all! I`m using dovecot for a while with no problems. Some days ago it started to delay the authentication until the timeout. syslog... Oct 3 09:00:10 coan dovecot: auth(default): pam(rodrigo.botan,121.120.119.179): pipe() failed: Too many open files Oct 3 09:00:11 coan dovecot: auth(default): pam(katia,121.120.200.97): pipe() failed: Too many open files Oct 3 09:00:11 coan dovecot: auth(default): pam(andersoncampos,121.120.200.35): pipe() failed: Too many open files Oct 3 08:25:55 coan dovecot: pop3-login: Disconnected: Inactivity: method=PLAIN, rip=121.120.119.39, lip=121.120.119.251 Oct 3 08:25:58 coan dovecot: pop3-login: Disconnected: Inactivity: method=PLAIN, rip=121.120.119.94, lip=121.120.119.251 Oct 3 08:26:01 coan dovecot: pop3-login: Disconnected: Inactivity: method=PLAIN, rip=121.120.119.148, lip=121.120.119.251 After the commands /etc/init.d/dovecot stop killall -9 dovecot-auth /etc/init.d/dovecot start It come back to work, then after some time, I need to restart again and again... I tried 'ulimit -n 5000' in /etc/init.d/dovecot, but the problem remains. The problem is in the authentication backend, I guess. I`m using PAM, so I leaved only one line in /etc/pam.d/dovecot: auth sufficient pam_permit.so and all worked fine. Of course, just for test, since this allows login with any password. My system: Debian Etch 64bit dovecot version: 1.0.rc15 (from etch repositories) PAM lib version: 0.79-5 (from etch repositories) The system has 200 users, with 30 logins per minute. hardware: Intel(R) Xeon(R) CPU 3050 @ 2.13GHz, 2GB RAM. If you have some pointer to the solution, it will be welcome. Thank you, Tom Lobato

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[Dovecot] Transition from Courier-IMAP
by Arno van Amersfoort 07 Oct '08

07 Oct '08

Hello all, Currently we are looking at the possibility of moving from Courier-IMAP to Dovecot (the one that comes with Debian Lenny: version 1.0.15). I'm currently testing it on a non-production server and have a few questions: 1) Currently all our clients use Thunderbird as their mail client to read mail from our IMAP server. Thunderbird is configured with "INBOX." as the "IMAP server directory". As we certainly do NOT want to reconfigure over 150 desktops, we would like to know if it's possible to make Dovecot work with Thunderbird Configured this way -> Simply make Dovecot act the same as Courier-IMAP. With the default configuration of Dovecot I can see the (IMAP) Inbox but not its subfolders when "IMAP server directory" is NOT empty. Is there a way to let Dovecot ignore this setting and/or make it compatible with Courier? 2) About a year back we already test-drived Dovecot but we weren't able to get "Delete as marked" option to work in Thunderbird in combination with "Expunge to trash". Any messages marked as deleted would simply be deleted permanently when Thunderbird was closed. This did work properly with Courier where any messages were expunged to Trash (as it should). Is this a known problem and has it been addressed yet? Basically both questions can be brought together as "How can we make Dovecot as compatible as possible with Courier-IMAP"? Thanks, -- Ing. A.C.J. van Amersfoort (Arno) Electronics & ICT Engineer ---------------------------------------------------------------- Leiden Institute of Physics (LION), Electronics Department (ELD) Huygens Laboratory (Room 1007), Leiden University Postal Address: P.O. Box 9504, 2300 RA Leiden Visit Address : Niels Bohrweg 2, 2333 CA Leiden The Netherlands ---------------------------------------------------------------- Phone : +31-(0)71-527.1894 Fax : +31-(0)71-527.5819 E-mail : a.c.j.van.amersfoort(a)eld.physics.leidenuniv.nl Homepage : http://rocky.eld.leidenuniv.nl

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[Dovecot] Zlib plugin question
by Ralf Hildebrandt 07 Oct '08

07 Oct '08

http://wiki.dovecot.org/Plugins/Zlib says pop3 and imap can use this plugin. Does deliver also use it? -- Ralf Hildebrandt (Ralf.Hildebrandt(a)charite.de) snickebo(a)charite.de Postfix - Einrichtung, Betrieb und Wartung Tel. +49 (0)30-450 570-155 http://www.arschkrebs.de I'm looking for a job T-Shirt I need to see - SARAH PALIN: IN ENGLAND WE SHOOT PIT BULLS

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[Dovecot] Postfix - dspam - dovecot deliver fails at deliver
by Shawn P. Duncan 07 Oct '08

07 Oct '08

I have Postfix & Dovecot working properly with mail delivered to the user's ~/Maildir using the postfix config: mailbox_command = /usr/lib/dovecot/deliver I would like to insert dspam in between, passing mail from postfix to dspam and then to dovecot/deliver for delivery. My objective is to only filter incoming mail. This set up doesn't seem to be documented anywhere that I've found via Google. Can someone give me some pointers? Platform is Ubuntu hardy using Dovecot 1.0.10 - Shawn

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[Dovecot] Help - I keep getting LSUB permission denied
by Don Steiny 07 Oct '08

07 Oct '08

Hi, I am using dovecot: 1.0.rc15 I was upgrading Debian and installed new versions of lots of things. My mail came fine and I though there was not problem until a user called and said it was not working through webmail. I tried, it it worked fine and I realized the problem was with dovecot. I have created new users, tried different UIDs. Removed any protections but when I telnet to the port, I get this: a02 LSUB "" "*" * LSUB () "/" "Trash" * LSUB () "/" "Junk" * LSUB () "/" "Sent" * LSUB () "/" "Junk E-mail" * LSUB () "/" "INBOX/Sent" * LSUB () "/" "INBOX/Trash" * LSUB () "/" "INBOX/Drafts" a002 NO Permission denied when I do it on my account, I get: * LSUB () "/" "INBOX/Sent" * LSUB () "/" "INBOX/Trash" * LSUB () "/" "INBOX/Drafts" a002 OK Lsub completed. I have tried making the directory 777, checked the owners. Copied my Maildir into the other user's to see if I could figure out what could be going on, but I still get the same behavior. HELP, my user needs his mail. THANKS -Don

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[Dovecot] Stopping imap synchronization on spool failure
by Chris Cappuccio 06 Oct '08

06 Oct '08

Is there any way to tell an IMAP client to not synchronize/delete old mail through IMAP? Let's say that recent events cause a mail spool to not exist, but people may still want to see old messages that are already cached on their machines.

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[Dovecot] Postfix, Dovecot, SASL, and Virtual Domains
by Roderick A. Anderson 06 Oct '08

06 Oct '08

My saga continues, with a few interruptions, to configure a new mail server for several domains. I've had one private post, and read a dozen of more HOWTOs, HOWDONEs, blogs, and posts on doing this but still haven't had any joy. Not quite sure what I got configured incorrectly so before doing more work on this I'll ask if what I'm trying to do is doable. Postfix: mydomain being one of the domains I'm hosting. myhostname will be from one of the hosted domains ... later no local users (except possibly root) Dovecot to authentication/authorize and Deliver to ... well ... deliver :-) Dovecot: users looked up by domain in /var/mail/vhosts/%d/passwd (?) mail placed (after mail sieve) placed in /var/mail/vhosts/$d/$u/Maildir/ Most of the HOWTOs and friends are using PostgreSQL, LDAP, or MySQL but I'd like to hold off on this until I feel more comfortable and informed on how Dovecot, Deliver, and Postfix work together. So am I out to lunch? I think right now it is I'm confused on what/how userdb and passdb are used. (This is my next RTFM on the list.) Thanks for any help, suggestions, or clue-sticks! Rod --

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[Dovecot] Dovecot 1.1.4 crash
by e-frog 06 Oct '08

06 Oct '08

After upgrading from 1.1.3 to 1.1.4 the imap process crashes as soon as moving a mail to the Trash folder. Belows backtrace points to the expire plugin... Backtrace /usr/local/libexec/dovecot/imap: Program terminated with signal 11, Segmentation fault. #0 0x2adbeaa8 in expire_mailbox_transaction_commit (t=0x10045248, uid_validity_r=0x7fff77fc, first_saved_uid_r=0x7fff7800, last_saved_uid_r=0x7fff7804) at expire-plugin.c:124 124 key = t_strconcat(DICT_PATH_SHARED, expire.username, "/", (gdb) bt full #0 0x2adbeaa8 in expire_mailbox_transaction_commit (t=0x10045248, uid_validity_r=0x7fff77fc, first_saved_uid_r=0x7fff7800, last_saved_uid_r=0x7fff7804) at expire-plugin.c:124 key = 0x7fff7800 "à\f" value = 0x10010290 "" _data_stack_cur_id = 4750760 xpr_box = (struct expire_mailbox *) 0x10042250 xt = (struct expire_transaction_context *) 0x10032f50 new_stamp = 268644240 update_dict = false ret = 4 #1 0x2ace6b90 in quota_mailbox_transaction_commit (ctx=0x10045248, uid_validity_r=0x7fff77fc, first_saved_uid_r=0x7fff7800, last_saved_uid_r=0x7fff7804) at quota-storage.c:95 qbox = (struct quota_mailbox *) 0x100422d0 qt = (struct quota_transaction_context *) 0x10032f60 #2 0x0048c90c in mailbox_transaction_commit_get_uids (_t=0x5, uid_validity_r=0x7fff7f70, first_saved_uid_r=0x10009f90, last_saved_uid_r=0x1006e6b0) at mail-storage.c:689 t = (struct mailbox_transaction_context *) 0x4 #3 0x00413430 in cmd_copy (cmd=0x100160c0) at cmd-copy.c:141 client = (struct client *) 0x10015e18 storage = (struct mail_storage *) 0x10015730 destbox = (struct mailbox *) 0x10042090 t = (struct mailbox_transaction_context *) 0x0 search_arg = (struct mail_search_arg *) 0x1 messageset = 0x1001a1c8 "7531" mailbox = 0x1001a1d0 "Trash" src_uidset = 0x1000a2b0 "7531" msg = 0x0 sync_flags = 0 imap_flags = 0 copy_count = 1 uid_validity = 1181584605 uid1 = 3296 uid2 = 3296 ret = 1 #4 0x0041a964 in cmd_uid (cmd=0x100160c0) at cmd-uid.c:26 command = (struct command *) 0x1006e6b0 cmd_name = 0x1001a1c0 "copy" #5 0x0041cb98 in client_command_input (cmd=0x100160c0) at client.c:580 client = (struct client *) 0x10015e18 command = (struct command *) 0x4 #6 0x0041c950 in client_command_input (cmd=0x100160c0) at client.c:629 client = (struct client *) 0x10015e18 command = (struct command *) 0x4 #7 0x0041cc78 in client_handle_next_command (client=0x10015e18, remove_io_r=0x7fff7918) at client.c:645 size = 25 #8 0x0041cde0 in client_handle_input (client=0x10015e18) at client.c:680 _data_stack_cur_id = 3 ret = 24 remove_io = false handled_commands = false #9 0x0041d01c in client_input (client=0x10015e18) at client.c:725 cmd = (struct client_command_context *) 0x0 output = (struct ostream *) 0x10015ff8 bytes = 25 #10 0x004ec54c in io_loop_handler_run (ioloop=0x10012938) at ioloop-poll.c:204 ctx = (struct ioloop_handler_context *) 0x10012a30 pollfd = (struct pollfd *) 0x2 tv = {tv_sec = 4, tv_usec = 747645} io = (struct io_file *) 0x10016058 t_id = 2 msecs = 4 ret = 0 call = false #11 0x004eae40 in io_loop_run (ioloop=0x10012938) at ioloop.c:320 No locals. #12 0x0042bae0 in main (argc=5, argv=0x7fff7a54, envp=0x7fff7a5c) at main.c:293 No locals. dovecot -n: # 1.1.4: /etc/dovecot/dovecot.conf log_path: /var/log/mail/dovecot.log info_log_path: /var/log/mail/dovecot.log ssl_disable: yes disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable: /usr/local/libexec/dovecot/imap-login login_process_size: 16 max_mail_processes: 16 mail_location: maildir:~/Maildir mail_drop_priv_before_exec: yes mail_process_size: 64 mail_plugins: quota imap_quota expire auth default: passdb: driver: pam userdb: driver: passwd socket: type: listen client: path: /var/run/dovecot/auth-client mode: 432 user: dovecot group: mail master: path: /var/run/dovecot/auth-master mode: 384 plugin: quota: maildir quota_rule: *:storage=1GB quota_rule2: Trash:storage=10%% expire: Trash 1 expire_dict: proxy::expiredict dict: expiredict: db:/var/lib/dovecot/expire.db

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[Dovecot] Expire Plugin
by e-frog 06 Oct '08

06 Oct '08

I was struggling for a while to get the expire plugin to expunge mail. I was using (and still would like to use) PAM as passdb and passwd as userdb but with this I could not get the expire-tool to delete any mails. For debugging purpose I switch to passwd-file as userdb/passdb and enabled mail_debug=yes. 1. passwd-file contains home directory and userdb_mail (->working!) /etc/dovecot/dovecot.users: foo:{plain}xxxx:2004:100::/home/foo::userdb_mail=maildir:~/Maildir root@mail:# dovecot --exec-mail ext /usr/local/libexec/dovecot/expire-tool --test Info: maildir: data=~/Maildir Info: maildir++: root=/home/foo/Maildir, index=, control=, inbox=/home/foo/Maildir Info: Trash: seq=1 uid=2586: Expunge Info: Trash: timestamp 1220392046 -> 1220451447 2. passwd-file contains home directory only (->not working!) /etc/dovecot/dovecot.users: foo:{plain}xxxx:2004:100::/home/foo root@mail:# dovecot --exec-mail ext /usr/local/libexec/dovecot/expire-tool --test Info: maildir: data=/root/Maildir Info: maildir++: root=/root/Maildir, index=, control=, inbox=/root/Maildir Error: stat(/root/Maildir/.Trash/tmp) failed: Permission denied (euid=2005 egid=100) The expire-tool doesn't find foo's mailbox even if mail_location is set global in the configuration file (please see below). This is exactly the same result as when using PAM and passwd. So I guess there is something wrong with user lookup or setting/expanding HOME and MAIL in the expire-tool. root@mail:# dovecot -n # 1.1.3: /etc/dovecot/dovecot.conf log_path: /var/log/mail/dovecot.log info_log_path: /var/log/mail/dovecot.log ssl_disable: yes disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable: /usr/local/libexec/dovecot/imap-login login_process_size: 16 max_mail_processes: 16 mail_location: maildir:~/Maildir mail_debug: yes mail_process_size: 64 mail_plugins: quota imap_quota expire auth default: passdb: driver: passwd-file args: scheme=plain /etc/dovecot/dovecot.users userdb: driver: passwd-file args: /etc/dovecot/dovecot.users socket: type: listen client: path: /var/run/dovecot/auth-client mode: 432 user: dovecot group: mail master: path: /var/run/dovecot/auth-master mode: 384 plugin: quota: maildir quota_rule: *:storage=1GB quota_rule2: Trash:storage=10%% expire: Trash 1 Junk 1 expire_dict: proxy::expiredict dict: expiredict: db:/var/lib/dovecot/expire.db

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[Dovecot] Dlopen errors
by CJ Keist 06 Oct '08

06 Oct '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Running Dovecot 1.1.3 and after dovecot has been running for awhile it will just stop authenticating. Only fix is to stop and restart dovecot. Here is the errors in the logs: ct 4 09:34:32 goku dovecot: [ID 107833 mail.info] auth-worker(default): pam(KVogel22,74.125.78.25): lookup service=dovecot Oct 4 09:34:32 goku dovecot: [ID 107833 mail.error] auth-worker(default): pam(KVogel22,74.125.78.25): pam_authenticate() failed: Dlopen failure Oct 4 09:34:32 goku dovecot: [ID 107833 mail.info] auth-worker(default): passwd(KVogel22,74.125.78.25): lookup Oct 4 09:34:32 goku dovecot: [ID 107833 mail.info] auth-worker(default): passwd(KVogel22,74.125.78.25): Password mismatch ./dovecot -n # 1.1.3: /userM/mail-services/dovecot/etc/dovecot.conf Warning: fd limit 256 is lower than what Dovecot can use under full load (more than 3072). Either grow the limit or change login_max_processes_count and max_mail_processes settings base_dir: /userM/mail-services/dovecot/var/run/dovecot/ protocols: imap imaps pop3 pop3s ssl_cert_file: /userM/mail-services/dovecot/etc/ssl/dovecot.pem ssl_key_file: /userM/mail-services/dovecot/etc/ssl/privkey.pem ssl_parameters_regenerate: 0 ssl_cipher_list: MEDIUM:!LOW disable_plaintext_auth: no login_dir: /userM/mail-services/dovecot/var/run/dovecot/login login_executable(default): /userM/mail-services/dovecot/libexec/dovecot/imap-login login_executable(imap): /userM/mail-services/dovecot/libexec/dovecot/imap-login login_executable(pop3): /userM/mail-services/dovecot/libexec/dovecot/pop3-login login_greeting: Cyrus ready. login_max_processes_count: 1024 max_mail_processes: 1024 mail_location: mbox:~/:INBOX=/userM/mail/%u mail_debug: yes mmap_disable: yes mail_nfs_index: yes mbox_write_locks: fcntl dotlock mbox_dotlock_change_timeout: 60 mail_executable(default): /userM/mail-services/dovecot/libexec/dovecot/imap mail_executable(imap): /userM/mail-services/dovecot/libexec/dovecot/imap mail_executable(pop3): /userM/mail-services/dovecot/libexec/dovecot/pop3 mail_plugin_dir(default): /userM/mail-services/dovecot/lib/dovecot/imap mail_plugin_dir(imap): /userM/mail-services/dovecot/lib/dovecot/imap mail_plugin_dir(pop3): /userM/mail-services/dovecot/lib/dovecot/pop3 auth default: mechanisms: plain login verbose: yes debug: yes worker_max_count: 1024 passdb: driver: pam passdb: driver: passwd args: blocking=yes userdb: driver: passwd args: blocking=yes socket: type: listen client: path: /var/lib/postfix/private/auth mode: 438 user: postfix group: postfix master: path: /userM/mail-services/dovecot/var/run/dovecot//auth-master mode: 384 - -- C. J. Keist Email: cj.keist(a)colostate.edu UNIX/Network Manager Phone: 970-491-0630 Engineering Network Services Fax: 970-491-5569 College of Engineering, CSU Ft. Collins, CO 80523-1301 All I want is a chance to prove 'Money can't buy happiness' -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFI55GTA29OFr7C6jcRAl6pAKCeGIUZYrJFlPSLdjjlb6ytN0mZXwCg2NUg 5wQl6r89l/sjo2mdbwPa+DQ= =4p14 -----END PGP SIGNATURE-----

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