- dovecot - dovecot.org

[Dovecot] Dovecot Director Output buffer full
by Dominic Malolepszy 29 Aug '12

29 Aug '12

Hi, I have been seeing the following messages in logs on all my Dovecot servers each running both a dovecot-director instance and a dovecot pop3/imap backend. These logs appear to relate to problems with the director. Aug 28 16:09:52 dovecot01 dovecot: director: Error: director(10.0.0.2:9090/right): Output buffer full, disconnecting Aug 28 16:10:01 dovecot01 dovecot: director: Error: Ring SYNC appears to have got lost, resending Aug 28 16:10:02 dovecot01 dovecot: director: Error: Director 10.0.0.2:9090/right disconnected Aug 28 16:09:51 dovecot02 dovecot: director: Error: director(10.0.0.3:9090/right): Output buffer full, disconnecting Aug 28 16:09:57 dovecot02 dovecot: director: Error: Ring SYNC appears to have got lost, resending Aug 28 16:10:01 dovecot02 dovecot: director: Error: Director 10.0.0.3:9090/right disconnected Aug 28 16:10:02 dovecot02 dovecot: director: Error: director(10.0.0.1:9090/left): Ping timed out, disconnecting Aug 28 16:13:15 dovecot02 dovecot: director: Warning: Delaying new user requests until ring is synced Note dovecot01 has IP 10.0.0.1 and dovecot02 has IP 10.0.0.2 and so on. This seems to show up when I enable the poolmon script (https://github.com/brandond/poolmon) on all the servers, and all servers start simultaneous logins to each others Dovecot backends. I did notice that the poolmon script has been flapping vhost weights a lot (I am looking at making the script handle transient errors better), which means that it is connecting to the dovecot-director socket every few minutes and changing vhost weights from 100 to 0 and vice-versa. Is there some sort of limit in the Dovecot Director that is being exceeded that should be tweaked? # 2.1.5: /etc/dovecot-director/dovecot.conf # OS: Linux 2.6.32-279.el6.mccqfix.x86_64 x86_64 Red Hat Enterprise Linux Server release 6.3 (Santiago) auth_cache_size = 100 M auth_default_realm = example.com auth_failure_delay = 5 secs auth_mechanisms = plain login auth_verbose = yes auth_verbose_passwords = sha1 auth_worker_max_count = 600 base_dir = /var/run/dovecot-director/ director_mail_servers = 10.0.0.1 10.0.0.2 10.0.0.3 10.0.0.4 10.0.0.5 director_servers = 10.0.0.1 10.0.0.2 10.0.0.3 10.0.0.4 10.0.0.5 disable_plaintext_auth = no instance_name = dovecot-dir passdb { args = /etc/dovecot-director/dovecot-sql.conf driver = sql } service director { fifo_listener login/proxy-notify { mode = 0666 } inet_listener { address = 10.0.0.1 port = 9090 } unix_listener director-userdb { mode = 0600 } unix_listener login/director { mode = 0666 } } service imap-login { executable = imap-login director inet_listener imap { address = 10.0.0.1 port = 143 } inet_listener imaps { address = 10.0.0.1 port = 993 ssl = yes } process_min_avail = 100 } service pop3-login { executable = pop3-login director inet_listener pop3 { address = 10.0.0.1 port = 110 } inet_listener pop3s { address = 10.0.0.1 port = 995 ssl = yes } process_min_avail = 100 } verbose_proctitle = yes

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[Dovecot] Size of Mailbox affecting the sending of mail?
by Tim Smith 29 Aug '12

29 Aug '12

Hi, I didn't know where to post this one so I'll start off with you guys and then try Postfix if I'm barking up the wrong tree! Having set up my mail server (Dovecot/Postfix), users are experiencing long delays (a couple of minutes) when sending mail from mail client such as Thunderbird - this increases with attachments. Having had a brief discussion with someone, they mentioned that the reason that this may be to do with the size of the mailbox. I couldn't see the rationale behind this unless Dovecot is syncing the mailbox after every sent mail (due to possibly saving the sent item?) The mail is being delivered successfully but the amount of time it is taking to complete the action is far too long! Sorry this is a bit vague but any advice on trying to diagnose the problem would be appreciated. Thanks in advance! Tim

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[Dovecot] quota: ignore deleted messages (?)
by Sven Hartge 28 Aug '12

28 Aug '12

Hi! I am currently in the process of preparing a migration of our old Courier-based IMAP/POP server setup to a Dovecot-based one. During this process I came across the following problem with the difference Courier and Dovecot handle deleted messages and mail quota. Quote from http://www.courier-mta.org/imap/README.maildirquota.html: ,---- | The default application configuration that uses this maildirquota | library does not count deleted messages, and any contents of the Trash | folder, against the quota. Messages that are marked as deleted (but not | yet actually removed), or messages that are moved to the Trash folder | (which is subject to automatic purging) do not count towards the set | quota. `---- Ignoring the content (or increasing the quota) of the Trash folder is easy and no problem, but ignoring deleted messages seems impossible without changes to the code. While deleted messages are still stored on the server and still take up space until they are expunged, counting them against the quota is somewhat counter-intuitive because most clients don't show those mails and the normal user is unaware the mails he deleted are still there and take up space. Worse yet, if the client uses move-to-Trash, a user deleting mails will double the used space (until Expunge is used) and this may push him over his quota and thus cause any new mail delivery to fail. Unfortunately as our users are used to the courier way of handling the quota this will cause trouble after the migration. And this setup is run at a University, so I don't have any control over the clients a user uses and the behavior of said clients so I am not able to disable the move-to-Trash feature or force an immediate Expunge after a delete. So I propose an additional flag for the quota_rule config option to be able to enable a more lax interpretation of the quota enforcement: quota_rule = *:storage=1G:ignoredeleted quota_rule2 = Trash:storage=+100M Of course I would then have a nightly cronjob which force-expunges all deleted messages so that users can't store mails infinitely in their mailboxes. Thanks for your time and Grüße, Sven. -- Sigmentation fault. Core dumped.

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[Dovecot] Deleting metadata smashes file dovecot.dict
by Andre Gröbe 28 Aug '12

28 Aug '12

Hi, I am using dovecot (see dovecot -n output below) with metadata plugin in my own plugin. I want to insert and delete some large metadata (>4KiB). It seems, that the delete in a second call of my plugin smashes the file dovecot.dict in users dir: 1st call: *dovecot.dict is empty -delete metadata 1 -delete metadata 2 -insert metadata 1 ~8KiB -insert metadata 2 <1KiB *dovecot.dict contains two entries 2nd call: -delete metadata 1 -delete metadata 2 -insert metadata 1 ~8KiB -insert metadata 2 <1KiB *dovecot.dict contains the two entries + some waste If all eight steps are called together (in the same plugin context) the file dovecot.dict seems to be ok. I have created a test plugin to reproduce this behaviour: <http://temp-share.com/show/dPf3myu5W>. It needs the notify and (patched) metadata plugin to run. To get it work i copy an email from one IMAP folder to another (to trigger the copy notifier). It seems, that there is an issue on writing metadata/dict, can anybody reproduce it or knows what is wrong? TIA -- Andre

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[Dovecot] Sieve/pigeonhole rejects email addresses for valid UNIX users
by David Anderson 28 Aug '12

28 Aug '12

Self-explanatory, I hope (note the period on the end of the username); sieve/pigeonhole does not allow you to have senders which end with a period, which means that any UNIX users with such usernames who send mail have it rejected by sieve: # useradd testuser. # su - testuser. $ mail david(a)example.com -s 'testing' 123 . [testuser.@levi ~]$ logout # less /var/log/maillog Aug 22 07:50:56 levi dovecot: lda(david(a)example.com): Error: sieve: envelope sender address 'testuser.(a)myhost.example.com' is unparsable Versions: dovecot-pigeonhole-0.2.6-21.el5 dovecot-managesieve-0.2.6-21.el5 dovecot-2.0.18-1_134.el5 Why would anyone have a UNIX username ending in a period? For one, web hosting companies may use your domain name as your username - but be subject to a 32-character limit, so your domain name gets truncated. David -- WordShell - WordPress fast from the CLI - www.wordshell.net

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[Dovecot] use sieve plugin with variable and folders
by Alano Conraz 28 Aug '12

28 Aug '12

Hello , I'm trying to use the pigeonhole plugin but I'm experiencing configuration problem... Hope you could help me! Firstly : my sieve filter test is the next one : /////////////////// require ["fileinto" , "variables" , "mailbox"]; if address :matches "Delivered-To" "*(a)*.*" { fileinto :create ".INBOX.iop" ; stop ; } //////////////////// I get in the log the following : "error: msgid=<****>: failed to store into mailbox '.INBOX.iop': Invalid mailbox name" And the email is stored in the INBOX (implicit keep was successful) I checked that "lda_mailbox_autocreate" and "lda_mailbox_autosubscribre" are set to "yes". Then , when this problem be solved, I would like to know if it is possible with the sieve plugin to implement the following algorithm : - extract the address from the header field "Delivered-To" and set the variable $delivto to this previous value. - extract the address from the header field "To" and set the variable $to to this previous value. - compare $delivto and $to : if they are diffrent, then redirect the email in the subfolder .INBOX.iop. Thank you for any help!

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[Dovecot] Fabricio Archanjo invited you to check out Dropbox
by Dropbox 28 Aug '12

28 Aug '12

Fabricio Archanjo wants you to try Dropbox! Dropbox lets you bring all your photos, docs and videos with you anywhere and share them easily. Accept invitation here: http://www.dropbox.com/el/?r=/referrals/NjI1MTc0NDM1Mjc%3Fsrc%3Dreferrals_b… - The Dropbox Team ____________________________________________________ To stop receiving invites from Dropbox, please go to http://www.dropbox.com/bl/694ad39c033e/dovecot%40dovecot.org

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[Dovecot] Fabricio Archanjo invited you to check out Dropbox
by Dropbox 28 Aug '12

28 Aug '12

Fabricio Archanjo wants you to try Dropbox! Dropbox lets you bring all your photos, docs and videos with you anywhere and share them easily. Accept invitation here: http://www.dropbox.com/el/?r=/referrals/NjI1MTc0MTkzODc%3Fsrc%3Dreferrals_b… - The Dropbox Team ____________________________________________________ To stop receiving invites from Dropbox, please go to http://www.dropbox.com/bl/694ad39c033e/dovecot%40dovecot.org

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[Dovecot] Help with Virtual Plugin
by Joy 28 Aug '12

28 Aug '12

Dear Experts, I have configured virtual plugin for my setup which is working as expected but after this dovecot lda is unable to deliver message to any mailbox and showing following error:- Error: user XXXXX: Initialization failed: Namespace 'virtual.': Unknown mail storage driver virtual Aug 28 12:46:27 lda(XXXXX): Fatal: Invalid user settings. Refer to server log for more information. Here is Namespace setting on my server:- namespace { type = private separator = . prefix = inbox = yes } namespace { prefix = virtual. separator = . location = virtual:~/Maildir/virtual:LAYOUT=maildir++ } Please let me know what could be the issue..

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[Dovecot] Java driver for doveadm
by Thufir 27 Aug '12

27 Aug '12

I've looked at http://wiki2.dovecot.org/Tools/Doveadm/Mailbox and there a few features I like which javax.mail just doesn't have. Is there maybe a Java driver for doveadm? thanks, Thufir

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