- dovecot - dovecot.org

[Dovecot] Dotlock dovecot-uidlist errors / NFS / High Load
by list＠airstreamcomm.net 24 Mar '11

24 Mar '11

As of late our four node dovecot 1.2.13 cluster has been experiencing a massive number of these dotlock errors: Created dotlock file's timestamp is different than current time (1295480202 vs 1295479784): /mail/user/Maildir/dovecot-uidlist These dotlock errors correspond with very high load averages, and eventually we have to turn off all but one server to stop them from occurring. We first assumed this trend was related to the NFS storage, but we could not find a networking issue or NFS related problem to speak of. We run the mail storage on NFS which is hosted on a Centos 5.5 host, and mounted with the following options: udp,nodev,noexec,nosuid. Secondly we thought the issues were due to NTP as the time stamps vary so widely, so we rebuilt our NTP servers and found closer stratum 1 source clocks to synchronize to hoping it would alleviate the problem but the dotlock errors returned after about 12 hours. We have fcntl locking set in our configuration file, but it is our understanding from look at the source code that this file is locked with dotlock. Any help troubleshooting is appreciated. Thanks, Michael # 1.2.13: /etc/dovecot.conf # OS: Linux 2.6.18-194.8.1.el5 x86_64 CentOS release 5.5 (Final) protocols: imap pop3 listen(default): *:143 listen(imap): *:143 listen(pop3): *:110 shutdown_clients: no 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_process_per_connection: no login_process_size: 128 login_processes_count: 4 login_max_processes_count: 256 login_max_connections: 386 first_valid_uid: 300 mail_location: maildir:~/Maildir mmap_disable: yes dotlock_use_excl: no mail_nfs_storage: yes mail_nfs_index: yes 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/lib64/dovecot/imap mail_plugin_dir(imap): /usr/lib64/dovecot/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3 auth default: username_format: %Ln worker_max_count: 50 passdb: driver: pam userdb: driver: passwd

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[Dovecot] pigeonhole and roundcube install problem
by Selcuk MIYNAT 24 Mar '11

24 Mar '11

Hi, I've installed sieve and managesieve(pigeonhole) on qmail and dovecot(v2.0.11). I've install sieverules on Roundcube. I can see the plugin on the webinterface, and i can add rules. But there is a problem: I've put this .qmail file on "deneme" user's home directory according to [1]. |/var/qmail/bin/preline -f /usr/local/libexec/dovecot/dovecot-lda -d $EXT@$USER Then I got this message on qmail log: deferral: /var/qmail/bin/preline:_line_1:_test:_too_many_arguments/ Incoming e-mail written to the disk but doesn't seen on inbox. If i have change my .qmail file to this: /usr/local/libexec/dovecot/dovecot-lda -d $EXT@$USER Plugin doesn't return a message to mail sender: Debug: Loading modules from directory: /usr/local/lib/dovecot Debug: Module loaded: /usr/local/lib/dovecot/lib90_sieve_plugin.so Debug: auth input: deneme(a)example.com home=/home/vpopmail/domains/example.com/deneme uid=89 gid=89 Debug: Effective uid=89, gid=89, home=/home/vpopmail/domains/example.com/deneme Debug: fs: root=/home/vpopmail/domains/example.com/deneme/Maildir, index=, control=, inbox=/home/vpopmail/domains/example.com/deneme/Maildir Debug: none: root=, index=, control=, inbox= Debug: sieve: using sieve path for user's script: /home/vpopmail/domains/example.com/deneme/.dovecot.sieve Debug: sieve: opening script /home/vpopmail/domains/example.com/deneme/.dovecot.sieve Debug: sieve: script binary /home/vpopmail/domains/example.com/deneme/.dovecot.svbin successfully loaded Debug: sieve: binary save: not saving binary /home/vpopmail/domains/example.com/deneme/.dovecot.svbin, because it is already stored Debug: sieve: executing script from /home/vpopmail/domains/example.com/deneme/.dovecot.svbin Info: sieve: msgid=<4D80A733.8010906(a)test.com.tr>: discarded vacation reply to <> Info: sieve: msgid=<4D80A733.8010906(a)test.com.tr>: stored mail into mailbox 'INBOX' But i can forward the incoming mail to another address. Why doesn't work this plugin, any ideas? [root@mail ~]# dovecot -n # 2.0.11: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 2.6.18-194.32.1.el5 x86_64 CentOS release 5.5 (Final) auth_debug = yes auth_default_realm = example.com auth_mechanisms = plain digest-md5 cram-md5 auth_socket_path = /usr/local/var/run/dovecot/auth-userdb auth_verbose = yes disable_plaintext_auth = no first_valid_uid = 0 last_valid_uid = 100 log_path = /var/log/dovecot mail_debug = yes mail_location = maildir:~/Maildir:LAYOUT=fs managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date passdb { args = /usr/local/etc/dovecot-sql.conf driver = sql } plugin/sieve = ~/.dovecot.sieve plugin/sieve_dir = ~/sieve protocols = imap pop3 sieve service auth { unix_listener auth-userdb { group = vchkpw mode = 0600 user = vpopmail } } ssl = no userdb { args = /usr/local/etc/dovecot-sql.conf driver = sql } protocol lda { info_log_path = /var/log/dovecot-deliver.log log_path = /var/log/dovecot-deliver-errors.log mail_plugins = " sieve" postmaster_address = postmaster(a)example.com sendmail_path = /var/qmail/bin/sendmail } dovecot-sql.conf çıktısı: driver = mysql connect = host=localhost user=vpopmailuser password=vpopmailpassword dbname=vpopmail default_pass_scheme = PLAIN password_query = SELECT CONCAT(pw_name, '@', pw_domain) AS user, pw_clear_passwd AS password FROM vpopmail WHERE pw_name = '%n' AND pw_domain = '%d' user_query = SELECT pw_dir as home, 89 AS uid, 89 AS gid FROM vpopmail WHERE pw_name = '%n' AND pw_domain = '%d' [1]: http://wiki2.dovecot.org/LDA/Qmail -- Selcuk MIYNAT Endersys Ltd. Sistem Destek Muhendisi / System Support Engineer Phone : +90 216-4709423 | Fax : +90 216-4709508 Web : http://www.endersys.com.tr Blog : http://blog.endersys.com Twitter : http://www.twitter.com/endersys LPI : The #1 Linux Certification for IT Professionals LPI (Linux Professional Institute) Turkey http://www.lpi-turkey.com Endersys is the first Advanced Business Partner of Red Hat in Turkey ! http://www.europe.redhat.com/partners/endersys/ -- Selcuk MIYNAT Endersys Ltd. Sistem Destek Muhendisi / System Support Engineer Phone : +90 216-4709423 | Fax : +90 216-4709508 Web : http://www.endersys.com.tr Blog : http://blog.endersys.com Twitter : http://www.twitter.com/endersys LPI : The #1 Linux Certification for IT Professionals LPI (Linux Professional Institute) Turkey http://www.lpi-turkey.com Endersys is the first Advanced Business Partner of Red Hat in Turkey ! http://www.europe.redhat.com/partners/endersys/

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[Dovecot] Problem with expire plugin and expunge
by Christoph Pleger 24 Mar '11

24 Mar '11

Hello, I am running dovecot 2.0.9 with expire plugin, using the sqlite backend. The following command is executed every day by cron: doveadm expunge -A mailbox Trash savedbefore 30d I started to use the expire plugin about one month ago. Since then, using "doveadm search -A mailbox Trash savedbefore <days>" with different values for <days>, I could see every day how the messages were getting older. Yesterday was the first time that the expression "savedbefore 30d" became true for the oldest messages in the Trash mailbox and these messages were actually deleted from Trash. But today, all messages that were not deleted yesterday are new to "doveadm search", that means that "doveadm search -A mailbox Trash savedbefore 0d" shows all messages from Trash, but "doveadm search -A mailbox Trash savedbefore 1d" shows no messages from Trash, though during the last month I moved messages to Trash every day. Best Regards Christoph

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[Dovecot] dsync warning/error - mailbox needs recreation
by Daniel L. Miller 23 Mar '11

23 Mar '11

What does this mean? These lines occur on subsequent runs of "dsync -u user backup target" dsync(dmiller(a)amfes.com): Warning: Destination mailbox INBOX has been modified, need to recreate it before we can continue syncing dsync(dmiller(a)amfes.com): Error: Can't delete mailbox INBOX: INBOX can't be deleted. -- Daniel

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[Dovecot] Configure Dovecot For IMAP Only?
by Carlos Mennens 23 Mar '11

23 Mar '11

I've install Dovecot 2.0.11-1 on my Linux server and all the guides and tutorials I've found on Google don't work since I'm running 2.x and it seems most guides were done with 1.x. I've opened up the configuration file /etc/dovecot/dovecot.conf & from what I can see, this is all I could come up with: protocols = imap listen = * base_dir = /var/run/dovecot login_greeting = Server ready. mail_location = maildir:~/mail I obviously want / need IMAP4 access ONLY and not POP3. I've got only 12 local Linux shell users and all authentication is done by I think PAM. My friend sent me his configuration file to see if it would work on Dovecot 2.x however I don't think it does: auth_mechanisms = plain login mail_location = maildir:~/mail passdb { driver = pam } protocols = imap service auth { unix_listener auth-client { group = postfix mode = 0660 user = postfix } user = root } ssl_cert = </etc/ssl/certs/cert.pem ssl_key = </etc/ssl/private/key.pem userdb { driver = passwd } #protocol imap { # imap_client_workarounds = delay-newmail tb-extra-mailbox-sep #} Can anyone please tell me what I need to add to get this very basic IMAP server up and running?

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[Dovecot] Mail Sync
by Scott Hughes 23 Mar '11

23 Mar '11

I am trying to sync my mail on two different servers as testing for converting our business over to a server using dovecot. I am currently running dovecot version 2.0.11 While trying to sync the messages using Thunderbird and a program named imapsync, I run into an error stating that the dovecot server does not know how to handle messages with the FORWARD flag set. Is the FORWARD flag some type of non-standard flag or is there something I need to do in dovecot to allow for this flag? Thanks

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[Dovecot] Bug: Creating mbox folders
by Kelly Stephens 23 Mar '11

23 Mar '11

Hey, I had trouble this morning creating a folder to contain sub-folders. I am using the mbox format. Turns out that the .imap directory in the new folder (directory) was not being created. Anytime I tried to view a sub-folder (using Thunderbird) dovecot would dump. Once I manually created the .imap directory, it works fine. dovecot --version -> 2.0.9 dovecot -n # 2.0.9: /etc/dovecot/dovecot.conf # OS: Linux 2.6.35.11-83.fc14.i686 i686 Fedora release 14 (Laughlin) listen = * mbox_write_locks = fcntl passdb { driver = pam } protocols = imap ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { driver = passwd } The maillog dump... Mar 16 08:50:22 brinn dovecot: imap(kms): Panic: file mailbox-list.c: line 324 (mailbox_list_get_unexpanded_path): assertion failed: (*location == SETTING_STRVAR_UNEXPAND ED[0]) Mar 16 08:50:22 brinn dovecot: imap(kms): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0() [0x994051] -> /usr/lib/dovecot/libdovecot.so.0() [0x9940c0] -> /usr/lib /dovecot/libdovecot.so.0(i_fatal+0) [0x96a690] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_list_get_unexpanded_path+0x138) [0xa086d8] -> /usr/lib/dovecot/libdovec ot-storage.so.0(mailbox_list_mkdir+0x52) [0xa09b32] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_list_create_missing_index_dir+0x129) [0xa09fb9] -> /usr/lib/doveco t/libdovecot-storage.so.0(index_storage_mailbox_open+0xa4) [0xa23c24] -> /usr/lib/dovecot/libdovecot-storage.so.0() [0xa485de] -> /usr/lib/dovecot/libdovecot-storage.so.0 () [0xa04d25] -> dovecot/imap(cmd_select_full+0x1cf) [0x805310f] -> dovecot/imap(cmd_select+0x1a) [0x8053b3a] -> dovecot/imap() [0x80560ed] -> dovecot/imap() [0x80561ca] -> dovecot/imap(client_handle_input+0x12d) [0x805640d] -> dovecot/imap(client_input+0x60) [0x8056d10] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x52) [0x9a18e2] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0xd3) [0x9a2b43] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x40) [0x9a1860] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x2b) [0x98cfcb] -> dovecot/imap(main+0x33d) [0x805faad] -> /lib/libc.so.6(__libc_start_main+0xe6) [0x732e36] -> dovecot/imap() [0x804e111] Mar 16 08:50:22 brinn dovecot: master: Error: service(imap): child 9753 killed with signal 6 (core dumps disabled)

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[Dovecot] different users with different quota
by Jim Knuth 23 Mar '11

23 Mar '11

Hello, How can one assign different users different Quota? So properly? quota_rule1 = userONE:storage=1G quota_rule2 = Trash:storage=100M quota_rule3 = SPAM:ignore quota_rule4 = userTWO:storage=5M quota_rule5 = Trash:storage=50M quota_rule6 = SPAM:ignore and so on ... Right or how? -- Mit freundlichen Grüßen, Jim Knuth P.S.: Bitte senden Sie KEINE HTML-Mails! Zufallszitat: Die Geschichte wird freundlich mit mir umgehen, denn ich habe vor, sie zu schreiben. [Churchill]

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[Dovecot] FETCH got too little data (+ wrong W value) with 1 byte offset
by Vincent Artzner 23 Mar '11

23 Mar '11

Hi there, I juste set up dovecot as local imap server last week, with maildir format. Things went fine with two "low volume" accounts, until I added another one. Then I see two different things with connected clients: 1/ Quite oftent well formed messages that appear... and disappear quite immediately. On the server, the messages concerned by 2/ seem to be there, I can open the files and it looks ok (header, content). The only error log I get is this: 2011-03-18 14:43:14 IMAP(info): Info: Disconnected: FETCH failed bytes=109363/174063195 2011-03-18 14:43:14 imap-login: Info: Login: user=<info>, method=PLAIN, rip=192.168.0.191, lip=192.168.0.10, TLS 2011-03-18 14:43:15 IMAP(info): Error: FETCH [] for mailbox Envois UID 11572 got too little data: 63454 vs 63455 2011-03-18 14:43:15 IMAP(info): Error: Maildir filename has wrong W value: /home/info/Maildir/.Envois/cur/1300450349.M120256P3108.Serveurlinux,S=460764,W=460768:2,S 2011-03-18 14:43:15 IMAP(info): Error: Corrupted index cache file /home/info/Maildir/.Envois/dovecot.index.cache: Broken virtual size for mail UID 11572 Please note the size: 63454 vs 63455: it's always like that: one byte difference. Here is the dovecot -n result: # 1.2.9: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-24-generic-pae i686 Ubuntu 10.04.2 LTS ext4 log_path: /home/dovecot.log log_timestamp: %Y-%m-%d %H:%M:%S listen: *:144 ssl_listen: *:10943 login_dir: /var/run/dovecot/login login_executable: /usr/lib/dovecot/imap-login login_process_per_connection: no mail_max_userip_connections: 20 mail_privileged_group: mail mail_location: maildir:/home/%u/Maildir:INBOX=/home/%u/Maildir/ mbox_write_locks: fcntl dotlock auth default: passdb: driver: pam userdb: driver: passwd The imap client used is thunderbird under windows XP/7. I also reproduced it with opera mail client. I tried to rename/delete dovecot.index.cache files as I have read about it, but doesn't changed anything. The incoming mails are provided to dovecot by procmail, so I think dovecot is responsible for settings the S, W params in the filenames. No other process should alter the messages (i still have to fully check this). I am a bit lost (not a system administrator at all) and would be grateful for any advice. Vincent

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[Dovecot] DoveCot 2.0.9: Problem with some Clients and separator (migrate from Cyrus)
by Denny Schierz 23 Mar '11

23 Mar '11

hi, we had to move from a old dieing Sparc very quickly our Cyrus IMAP Users to Dovecot. Most things works, but some Clients (like Evolution or Thunderbird) are strange. Our separator in Dovecot2 is "^", the mailboxes on the filesystem are something like "INBOX.subfolder1.subfolder2", but in TB and Evo I see INBOX^subfolder1^subfolder^ In Roundcube Webmail, I have just a normal tree, as I expected. I used cyrus2dovecot.pl for converting. On Evolution I deleted the IMAP Profile and recreated it, and that was working, but it isn't a workaround for TB So, how can I fix it? namespace { type = private separator = ^ prefix = inbox = yes hidden = no subscriptions = yes } cu denny

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[Dovecot] Master user creds for proxy stored statically/locally?
by Edward Carraro 22 Mar '11

22 Mar '11

I have successfully set up the master user on the destination server (2.0.11) and tests have worked. now I'm working on the proxy Before I had the proxy just forward everything to the backend and had the destination server do the authentication. My authentication is done via LDAP but not really sure how to append the master user and password to the users credentials after authentication is done. id rather not have the master user/pass in each users ldap entry and returned after doing a lookup or add a destuser field for each user... basically i prefer not having to add any new attributes to LDAP Can the information be stored locally in a file on the proxy? do i just make the same master user file that I have on the backend? Thanks!

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[Dovecot] Change password cheme
by Pascal Nobus 22 Mar '11

22 Mar '11

We want to update our password scheme from crypt to SHA256. Because usernames/passwords are in MySQL I thought this wouldn't be a problem. We have about 3000 users that need to be updated, so make a new password for them isn't possible. I was thinking of an automated script that would update the database after every login. So we did this: dovecot.conf: mail_executable = /usr/local/etc/updatepwd.sh updatepwd.sh: #!/bin/sh $USER $PASSWORD|/usr/local/etc/do_updatepwd.pl exec /usr/local/libexec/dovecot/imap "$@" (do_updatepwd.pl is a perl script that makes a sha256 from the second argument, and then update the mysql-query) However: the password is not in the ENVIROMENT anymore. I changed in dovecot the settings: auth_debug = yes auth_debug_passwords = yes Anyone a solution for this? Best regards, Pascal

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[Dovecot] Problem with sieve and delivery to folders with german umlauts.
by Micha Krause 22 Mar '11

22 Mar '11

Hi, I have a problem with sieve and german umlauts: error: msgid=unspecified: failed to store into mailbox 'INBOX.t&AOQ-st' (INBOX.t&-AOQ-st): Mailbox doesn't exist: t&-AOQ-st. The folder name is "täst", the filesystem folder is ".t&AOQ-st" , but sieve seems to look for a folder named ".t&-AOQ-st" Dovecot verstion is: 2.0.9 (7ecc5e10da57) Micha Krause

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[Dovecot] http://wiki2.dovecot.org/MailServerOverview contains poppycock
by William Blunn 22 Mar '11

22 Mar '11

Just having another look at http://wiki2.dovecot.org/MailServerOverview , it seems to have some statements in it which are misleading, and some which are really ... well ... wrong. Quote: "With the possible, optional, exception of the deliver MDA, Dovecot is not involved with reception, delivery, and storage of mail. That function is provided by a MTA such as postfix <http://www.postfix.org>. It is the MTA that determines where and how mail is stored - Dovecot must then be configured to retrieve the mail accordingly." (Entered by user "amfes".) This contains a significant proportion of poppycock. Dovecot includes extensive functionality for the storage (as in the action of storing) of e-mail as well as retrieval, in the shape of the LDA. Using Dovecot's LDA is /required/ in the case of Dovecot-specific mail storage formats (sdbox, mdbox). With mbox, use of the Dovecot LDA is advisable since it will guarantee a locking strategy which is compatible with Dovecot's mail retrieval functionality. And in any case, use of the Dovecot LDA has merit in that it should guarantee line-up between the mailstore configurations used for storage and retrieval. It is NOT the MTA that determines where and how mail is stored. It is the PERSON who configures the system who decides this, and codifies that configuration into whatever systems carry out local delivery and retrieval. It IS true that use of Dovecot's LDA is optional, but to say that it is a "possible exception" is misleading. People /should/ use the Dovecot LDA if they are using Dovecot IMAP/POP, and the /option/ is to use the MTA's local delivery system /if/ it is so indicated on a particular system. Quote: "Again, it bears repeating, Dovecot /is not responsible for mail delivery or storage/. Any questions on these issues involve your MTA and MDA. Get those working first." (Entered by user "DanielMiller".) Again, contains quite a lot of misleading nonsense. "Mail delivery" includes the hand-off of the message by the MTA to the LDA, and the storage of the message by the LDA. The LDA should probably be Dovecot, so really Dovecot /is/ partially responsible for mail delivery. "Storage" involves that placing of message into the message store. This should be done by Dovecot, so Dovecot is responsible for this. Bill

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[Dovecot] dsync inbox conversion problem (mbox -> mdbox)
by Sergiy Kyrylkov 22 Mar '11

22 Mar '11

Hi, We are trying to convert all mbox mail on our systems to mdbox using dsync, in order to be able to use email sub-folders in Thunderbird. Everything works fine for non-inbox folders, however the inbox folders are not getting converted. We used: *dsync -v convert mbox:~/mail:INBOX=/var/mail/%u* *dovecot --version* 2.0.beta6 (3156315704ef) (shipping with RHEL6/SL6) *dovecot -n* # 2.0.beta6 (3156315704ef): /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-71.18.2.el6.i686 i686 Scientific Linux release 6.0 (Carbon) mail_location = mdbox:~/mdbox mbox_write_locks = fcntl passdb { driver = pam } protocols = imap service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } } ssl = required ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { driver = passwd } Sergiy

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[Dovecot] Request - please uncomment !include_try /etc/dovecot/local.conf in example config
by Ng Oon-Ee 22 Mar '11

22 Mar '11

Hi, could I request that the example config in doc/dovecot/example-config/dovecot.conf be slightly altered to uncomment the last line? The point of include_try is that it only includes if such a file exists, and doesn't break anything if the file does not exist. My distro (Arch) has a policy not to apply non-essential patches, rather asking users to forward requests upstream, hence this email. It allows users to simply keep a local.conf with all their settings and not have to worry that it would not be used when the dovecot package gets upgraded (which mostly means /etc/dovecot/dovecot.conf gets replaced, depending on packaging standards). Thanks.

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[Dovecot] Bug in xi.rename-it.nl/dovecot-2.0.11/debian/watch
by Mark Alan 21 Mar '11

21 Mar '11

If I am not wrong, debian/watch should be: --- old/dovecot-2.0.11/debian/watch 2011-03-07 17:24:51.000000000 +0000 +++ new/dovecot-2.0.11/debian/watch 2010-12-03 10:04:00.000000000 +0000 @@ -1,4 +1,4 @@ # watch control file for uscan version=3 # Site Version Script -http://dovecot.org/releases/1.2/dovecot-(.*\.[0-9]+)\.tar\.gz debian uupdate +http://dovecot.org/releases/2.0/dovecot-(.*\.[0-9]+)\.tar\.gz debian uupdate M.

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[Dovecot] dovecot proxy, imapproxy, perdition . . . or?
by Lorens Kockum 21 Mar '11

21 Mar '11

Hi, I have two load-balanced dovecot servers using a single NFS mount. The version is 1.2.11. I chose this so that if one server goes down the other will take up the load, and if my load is too much for one server I just have to add more identical servers. It works, but I wish to move to SAN storage because the NFS server is exhibiting irregular performance. (I spent a lot of time with tcpdump to check that it wasn't NFS locking problems). Performance is very important to me, not in the sense of many users but in the sense of quick response time, since the main use is as a webmail backend. That means that instead of load-balancing connections between servers I will have to partition users between servers (all on one to begin with) and direct users to the corresponding server. I expected to use perdition, but when reading up on that I found imapproxy, which could be interesting for performance reasons, and also that dovecot has an included proxy, and that its performance is better than perdition. However on http://wiki.dovecot.org/HowTo/ImapProxy the feature "IMAP/POP3 server with proxy feature" is noted as "This model is still a bit unfinished in current code." Is this still true? There's also a general note that "This page was written quite a long time ago and may not match reality anymore" . . .

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[Dovecot] questions/problems virtual plugin pop3 leave copies on the server for x days then delete
by Robert Schetterer 21 Mar '11

21 Mar '11

Hi Timo, i allready asked about this , and did some fixes , but it isnt working yet ,as far i have a setup like namespace default { # type = private separator = / prefix = "" list = yes # hidden = no subscriptions = yes } namespace virtual { # type = private prefix = "virtual/" separator = / location = virtual:/etc/dovecot/virtual:LAYOUT=maildir++:INDEX=~/virtual hidden = yes list = no subscriptions= no } namespace real { # type = private prefix = "RealMails/" separator = / list = no hidden = yes } pop3_enable_last = yes pop3_reuse_xuidl = no pop3_uidl_format = %g pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s mail_max_userip_connections = 100 mail_plugins = expire virtual quota mail_log fts fts_squat notify pop3_client_workarounds = outlook-no-nuls oe-ns-eoh RealMails/ RealMails/* -RealMails/Trash -RealMails/Trash/* -RealMails/Sent -RealMails/Sent/* -RealMails/Templates -RealMails/Templates/* -RealMails/Drafts -RealMails/Drafts/* -RealMails/Archives -RealMails/Archives/* unseen normally this works as expected some users want to use leave copies messages on the server for x days then delete via pop3 i tested this with thunderbird and looked into the maildir, it seems that the mails stay in "new" folder of the maildir after i downloaded via pop3 ( i am not sure is this expected ? , i would thought they get to cur ) thunderbird does not download this mails again ( good ), but it doesnt delete them from maildir new ever( bad ) , so the whole leave copy and delete after x days function pop3 is not working i am not quite sure if there is relation to virtual namespaces ( which i like to use in future too ) , but have to renable this feature working any idea? -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria

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[Dovecot] Virtual and system users with public mailboxes
by kshaw＠kendallshaw.com 21 Mar '11

21 Mar '11

Hi, I am running dovecot 1.2.9 and postfix, and I am trying to setup a public mailbox. My thought is that there would be one system user with a sieve script to deliver messages to the public mailbox. And, I would like to give virtual users access to the mailbox. On this list, I read how you can have both system and virtual users by using passdb and static userdbs. But, I don't understand how this can be combined with namespaces, where I specify the location. For all virtual users I had: mail_location = maildir:/var/somewhere/%u/maildir/ I think I need that for virtual users and: maildir:~/Maildir for the system users. namespace private { location = ? # how do I have the location be different for system and virtual users? } namespace public { location = ? # ditto (for the index)? } Kendall

3 3

[Dovecot] maildir location
by upen 21 Mar '11

21 Mar '11

Hello, I am trying to use dovecot (v. 2.0.11) and postfix (v. 2.7.3) together. The email server is an ldap client and user's home directories on NFS server are mounted using autofs. As I understand, Maildir performance is better than mbox type, so I'd like to use Maildir instead of mbox. However, when I checked conf.d/10-mail.conf file, there is mail_location = maildir:~/.maildir already configured in it which means user's email will reside in their home directories on the NFS server rather than being on Email server's local storage where plenty of space is available. I anticipate due to NFS there will again be a performance hit . Question : Can I change mail_location for maildir to be somewhere other than ~/.maildir. ( like /var/mail/%u/Maildir, where /var/mail is local storage). There are about 200 ldap users who will be using this email server through squirrel-mail or access them through email clients. By the way, I am confused about one setting in postfix : home_mailbox = .maildir/ in main.cf . Does this really play any role? If so, which parameter should be changed and to what and with what permissions to the new directory. Hope I was able to explain, if not please let me know for more details.. Thanks, U

4 9

[Dovecot] Can't disable chroot to 'empty' dir, but need to... how to do it?
by Tim Bessie 21 Mar '11

21 Mar '11

Hello all... I've installed dovecot on my ISP's shell server, and am using SSH tunnelling so that I can retrieve my mbox-format mail from procmail-processed mailboxes on that server (normally I just ssh there and read them locally with pine, but now that I have a phone with an IMAP client, I wanted to be able to read it more easily there). The problem I'm having is, although it's working, whenever dovecot starts up, or I try to log in, it attempts to chroot to /home/mydir/dovecot/var/run/dovecot/empty (where /home/mydir/dovecot is the path to my dovecot installation). I've turned off all chroot'ing in all the config files, but it still seems to want to chroot to that one directory. The message I see in the log is: Mar 19 02:09:43 master: Info: Dovecot v2.0.11 starting up (core dumps disabled) Mar 19 02:09:44 anvil: Fatal: chroot(/home/mydir/dovecot/var/run/dovecot/empty) failed: Operation not permitted Mar 19 02:09:44 master: Error: service(anvil): command startup failed, throttling This doesn't cause a problem accessing my mail, but it DOES seem to wait 60 seconds between attempts at chroot'ing, so logins to the server take that long (until the chroot fails). Is there any way I can disable this? Again, I've followed the instructions and set 'chroot=' (empty) for all services, but that hasn't helped. - Tim

2 1

[Dovecot] Problem with pam-auth and winbind
by pk10＠ksiaznica.torun.pl 21 Mar '11

21 Mar '11

Hi I try to use windbind rule to authenticate users in dovecot login procedure. /etc/nsswitch.conf file: passwd: files winbind shadow: files winbind group: files winbind Configuration of the dovecot is follows: log_path: /var/log/dovecot/error.log info_log_path: /var/log/dovecot/info.log protocols: imap imaps pop3 pop3s ssl_cert_file: /etc/pki/tls/certs/dovecot.pem ssl_key_file: /etc/pki/tls/private/dovecot.pem login_dir: /var/run/dovecot/login login_executable(default): /usr/lib64/dovecot/imap-login login_executable(imap): /usr/lib64/dovecot/imap-login login_executable(pop3): /usr/lib64/dovecot/pop3-login mail_executable(default): /usr/lib64/dovecot/imap mail_executable(imap): /usr/lib64/dovecot/imap mail_executable(pop3): /usr/lib64/dovecot/pop3 mail_plugin_dir(default): /usr/lib64/dovecot/modules/imap mail_plugin_dir(imap): /usr/lib64/dovecot/modules/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/modules/pop3 auth default: mechanisms: plain login use_winbind: yes passdb: driver: pam args: dovecot userdb: driver: passwd socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix and configuration of the /etc/pam.d/dovecot is follows: #%PAM-1.0 auth required pam_env.so debug auth sufficient pam_winbind.so #auth sufficient pam_unix.so likeauth nullok use_first_pass auth required pam_deny.so # when I try logon from my console: # telnet komp14 110 Trying 10.10.10.38... Connected to komp.xxx.xxx (10.10.10.38). Escape character is '^]'. +OK Dovecot ready. user tt1 +OK pass xxxxxxxxx -ERR Authentication failed. quit +OK Logging out Connection closed by foreign host. Of course password is corret becouse #wbinfo -K tt1 Enter tt1's password: plaintext kerberos password authentication for [tt1] succeeded (requesting cctype: FILE) credentials were put in: FILE:/tmp/krb5cc_0 In the logs files I can find coresponding to the telnet command to dovecot: /var/log/auth.log Mar 14 09:43:22 komp14 dovecot-auth: pam_winbind(dovecot:auth): getting password (0x00000000) Mar 14 09:43:22 komp14 dovecot-auth: pam_winbind(dovecot:auth): user 'tt1' granted access /var/log/dovecot/info.log Mar 14 09:43:29 pop3-login: Info: Aborted login (auth failed, 1 attempts): user=<tt1>, method=PLAIN, rip=10.10.10.38, lip=10.10.10.38, secured I'll be apreciate for any hints. but in /var/log/dovecot/error.log we have information: Mar 14 09:43:29 auth-worker(default): Error: pam(tt1,10.10.10.38): pam_acct_mgmt() failed: Authentication failure This test was done with windbindd Version 3.5.3. When I test it on another machine with windbind Version 3.0.24 (config file are the same) authentication prosess is done properly. Any HINTS????

2 1

[Dovecot] DOVECOT TO HAVE MULTIPLE AUTHENTICATION MECHANISM FOR A PARTICULAR USER
by PARTH MONGA 21 Mar '11

21 Mar '11

Hi Friends IS IT POSSIBLE IN DOVECOT TO HAVE MULTIPLE AUTHENTICATION MECHANISM FOR A PARTICULAR USER as u provided me in the link http://wiki2.dovecot.org/Authentication/MultipleDatabases <http://wiki2.dovecot.org/Authentication/MultipleDatabases>The link is applied to all the users( system + virtual) , which increased my overhead of fetching data can i have the same for a particular user ( local + database ) auth mecahnism Thanks and Regards Parth Monga

2 1

[Dovecot] 2.0.11 segfault while can't access submission_host
by Maciej Uhlig 21 Mar '11

21 Mar '11

15-lda.conf: submission_host = 192.168.m.n:587 2011-03-21T14:43:49+01:00 prac/p-prac dovecot: [ID 583609 mail.debug] lmtp(12354, user(a)us.edu.pl) Debug: mcQ1NitVh01CMAAAuqlTtQ: sieve: executing script from /mails/sieve/user(a)us.edu.pl.svbin 2011-03-21T14:43:49+01:00 prac/p-prac dovecot: [ID 583609 mail.error] lmtp(12354, user(a)us.edu.pl) Error: smtp(192.168.m.n:587): RCPT TO failed: 554 5.7.1 <prac[192.168.x.y]>: Client host rejected: Access denied 2011-03-21T14:43:49+01:00 prac/p-prac dovecot: [ID 583609 mail.error] master: Error: service(lmtp): child 12354 killed with signal 11 (core not dumped) in case submission_host grants access there is no segfault; mail sent ok. Regards, MU

2 1