March 2013 - dovecot - dovecot.org

[Dovecot] loop when I enable
by Andreas Meyer 01 Apr '13

01 Apr '13

Hello! I have a nasty problem with a loop when I enable quota_warning. The mailbox fills up with thousands of email within seconds. This happens only with mbox'es retrieved with POP3. From MAILER-DAEMON Thu Mar 21 13:54:07 2013 From: support(a)anup.de Subject: Mailbox Quota-Warnung X-UID: 8036 Status: X-Keywords: Content-Length: 41 Ihre Mailbox ist jetzt zu below% belegt. # doveconf -n # 2.1.7: /usr/etc/dovecot/dovecot.conf auth_mechanisms = plain cram-md5 auth_verbose = yes disable_plaintext_auth = no hostname = delta.bitcorner.eu log_path = /var/log/dovecot1 mail_home = /var/spool/vhosts/%d/%n mail_plugins = quota 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 ihave vacation-seconds namespace inbox { inbox = yes location = prefix = } passdb { args = /etc/dovecot/passwd driver = passwd-file } plugin { autocreate = Trash autocreate2 = Drafts autocreate3 = Sent autosubscribe = Trash autosubscribe2 = Drafts autosubscribe3 = Sent quota = maildir:User quota quota_rule = *:storage=500MB quota_rule2 = Trash:storage=+10%% sieve = ~/.dovecot.sieve sieve_dir = ~/.sieve sieve_extensions = +vacation-seconds sieve_vacation_default_period = 10d sieve_vacation_max_period = 30d sieve_vacation_min_period = 1h } postmaster_address = postmaster(a)bitcorner.de protocols = imap pop3 lmtp sieve quota_full_tempfail = yes service auth { unix_listener auth-userdb { group = vmail mode = 0666 user = vmail } } service managesieve-login { inet_listener sieve { port = 4190 } } service quota-warning { executable = script /usr/local/bin/quota-warning.sh unix_listener quota-warning { mode = 0666 user = vmail } user = vmail } ssl_cert = </etc/dovecot/ssl/hostcert.pem ssl_key = </etc/dovecot/ssl/hostkey.pem userdb { args = /etc/dovecot/passwd driver = passwd-file } protocol lda { info_log_path = /var/log/dovecot-lda.log log_path = /var/log/dovecot-lda-errors.log mail_plugins = quota quota sieve } protocol imap { imap_idle_notify_interval = 29 mins mail_max_userip_connections = 20 mail_plugins = quota quota imap_quota autocreate } protocol lmtp { mail_plugins = quota sieve } protocol sieve { mail_max_userip_connections = 10 managesieve_implementation_string = Dovecot Pigeonhole managesieve_logout_format = bytes=%i/%o managesieve_max_compile_errors = 5 managesieve_max_line_length = 65536 } protocol pop3 { mail_max_userip_connections = 10 mail_plugins = quota quota pop3_uidl_format = %08Xu%08Xv } The problem occurs when I add the following to dovecot.conf: quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=80%% quota-warning 80 %u quota_warning3 = -storage=100%% quota-warning below %u # user is no longer over quota The script executed looks like this: #!/bin/sh PERCENT=$1 USER=$2 cat << EOF | /usr/libexec/dovecot/dovecot-lda -d $USER -o "plugin/quota=maildir:User quota:noenforcing" From: support(a)anup.de Subject: Mailbox Quota-Warnung Ihre Mailbox ist jetzt zu $PERCENT% belegt. EOF What can I do? I wonder if there some solution with namespaces possible maybe? Thank you! Andreas

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[Dovecot] stats: duration of sessions, commands
by Lutz Preßler 31 Mar '13

31 Mar '13

Hello Timo, I would like to have reset_timestamp (or another field) in stats dump output of levels session and command. Both session duration and individual command execution times would be interesting data to have. Greetings, Lutz

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[Dovecot] Dovecot 2.2rc3 Client Cert Auth and Webmail -> auth_ssl_require_client_cert problem
by Christian Felsing 31 Mar '13

31 Mar '13

Hello, I would like to set up a Dovecot based mail system which uses X.509 Client Certificates for authentication. A webmail system based on Horde5 should use Dovecot as backend. For now Dovecot works with client certificates issued by my CA and Horde authenticates also with same client certs. Due to protocol it is impossible to use client certs presented by user to Horde for authentication at Dovecot, so Horde should be allowed to authenticate itself without or an arbitrary password to Dovecot. Horde and Dovecot are running in same protected LAN. Unfortunately Dovecot does not support different authentication methods on different IP addresses or ports. This does not work: remote 192.168.116.28/32 { auth_ssl_require_client_cert = no auth_ssl_username_from_cert = yes disable_plaintext_auth = no ssl = yes } Result is "doveconf: Fatal: Error in configuration file /opt/dovecot-2.2.rc3/etc/dovecot/conf.d/10-auth.conf line 103: Auth settings not supported inside local/remote blocks: auth_ssl_require_client_cert" Replacing "auth_ssl_require_client_cert = no" by "ssl_verify_client_cert = no" does not yield in an error, but it does nothing, Dovecot still insists for a client certificate. I afraid that I am trapped by this problem: http://dovecot.2317879.n4.nabble.com/Problem-with-requiring-client-certific… Is there any way to turn off client certs for specific local or remote IP addresses? best regards Christian

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[Dovecot] Incorrect response when opening read-only mailboxes with per-user flags?
by Guido Berhoerster 31 Mar '13

31 Mar '13

After some debugging on the protocol level I've finally found the problem with per-user seen flags in read-only mailboxes. Dovecot actually does allow storing the seen flag on messages but AFAICS it does not communicate that correctly to clients, this is what its response to selecting a read-only mailbox with "lrs" ACL in effect for the logged in user looks like: 2 SELECT "Public/Test" * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS ()] Read-only mailbox. * 2 EXISTS * 0 RECENT * OK [UNSEEN 2] First unseen. * OK [UIDVALIDITY 1364221612] UIDs valid * OK [UIDNEXT 3] Predicted next UID * OK [HIGHESTMODSEQ 1] Highest 2 OK [READ-ONLY] Select completed. Shouldn't PERMANENTFLAGS contain \Seen here if per-user seen flags are enable and should it even be tagged READ-ONLY at all in this case? At least clients such as Python imaplib, IMAPClient, or Roundcube will open such mailboxes with EXAMINE and thus do not allow the modification of flags. -- Guido Berhoerster

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[Dovecot] dsync mirror to convert from mbox (1.2x) to mdbox (2.2)
by Ken A 31 Mar '13

31 Mar '13

I'm converting mail from mbox to mdbox. I've copied mail over to a new system, and now I'm running dsync like this: dsync -u username mirror mbox:/folder_location/username:INBOX=/inbox_location/username That seemed to work, with a couple minor errors: > dsync(username): Warning: Our dotlock file /mail_location/username.lock was deleted (locked 20 secs ago, touched 20 secs ago) > dsync(username): Error: file_dotlock_delete() failed with mbox file /mail_location/username: No such file or directory Do I also need to specify where dovecot's indexes are for the old mbox files, or is this not needed for mbox conversions (when they are the source)? Thanks, Ken A.

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[Dovecot] Dovecot METADATA support
by Bruce Marriner 31 Mar '13

31 Mar '13

I've been trying to work with dovecot metadata plugin and posted a question here related to that a few days ago here : http://www.dovecot.org/list/dovecot/2013-March/089241.html I just read today (e-mail on this list) from Timo Sirainen that >> >> Dovecot is getting close to having native METADATA support. >> I am very curious about this. When is "getting close" and I would guess this will be for v2.2? Will this support be the same as the dovecot-metadata-plugin in hg or something completely different? I'm sorry if I'm asking questions that have already been answered. My goal is to use Kolab3 with Dovecot instead of using Cyrus IMAP and Kolab requires metadata/annotation support. Right now I'm testing this using the dovecot-metadata-plugin but I am very interested it learning about native metadata support and testing it with Kolab 3. Any detail you can provide would be very appreciated. Bruce

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[Dovecot] global mail_plugins
by Andreas Meyer 31 Mar '13

31 Mar '13

Hello! How do I know what is specified in the global mail_plugins? # doveconf |grep mail_plugins mail_plugins = mail_plugins = " quota sieve" mail_plugins = " quota imap_quota autocreate" mail_plugins = " sieve" Is it just what is defined in the dovecot.conf and when there is nothing defined there are no global mail_plugins per default? Andreas

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[Dovecot] Cassandra support
by Goktug YILDIRIM 31 Mar '13

31 Mar '13

Hi, I've read some previous threads about Cassandra support. In a message at April 2012 it was written that it would take a few hours after doing some internal stuff. http://dovecot.markmail.org/search/?q=cassandra#query:cassandra%20order%3Ad… I wonder if there have been a progress since then? Or a better alternative came up? -- Goktug

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[Dovecot] Custom Headers/Flags Support in dovecot
by Ramesh Natarajan 31 Mar '13

31 Mar '13

I am currently trying to evaluate if I can use dovecot to be used for my imap server like application. This is not an email application but a generic storage server that uses IMAP protocol to save and retrieve messages. The messages have standard From/To/Date headers and a lot of custom headers for threading conversations e.t.c. As a part of my application requirements I also need to support custom flags and have ability to set/change/retrieve them via IMAP. 1) Does Dovecot support custom flags to be set/changed/retrieved? 2) I understand dovecot optimizes standard RFC822 headers and flags in cache/index files for faster lookups and searches. Does custom headers and flags fall into this optimization algorithm? 3) I am planning to support multiple users and each mailbox may have upto 1000 folders. Each folder may have an average of 20 MIME encoded messages. I am planning to use local storage with single-dbox format. Do you see any issues with this? thanks Ramesh

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[Dovecot] about maildirsize not updating
by mastertoilet＠netzero.net 31 Mar '13

31 Mar '13

Hi. i am currently using roundcube my webmail and configure using dovecot quota plugins. but it seems to not be updating the maildirsize when new mails comes.Deleting the maildirsize will recreate the files correctly.Is there any solutions to this problem with dovecot. ____________________________________________________________ How to Sleep Like a Rock Obey this one natural trick to fall asleep and stay asleep all night. http://thirdpartyoffers.netzero.net/TGL3231/51553ef81818d3ef72750st04duc

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