August 2015 - dovecot

Quota-status service on Director
by Michael Kliewe 27 Sep '17

27 Sep '17

Hello, I'm trying to configure the quota-status service, but it seems I'm not successful with my director setup (2.2.9). I activate the quota-status service like this on my director server: $ cat 91-quota-status.conf ## ## Quota-Status configuration. ## # Load Module quota-status and listen on TCP/IP Port for connections. service quota-status { executable = quota-status -p postfix inet_listener { address = 10.0.1.44 port = 12340 } client_limit = 1 } # Plugin configuration. # Return messages for requests by quota status: success, nouser and overquota. plugin { quota_status_success = DUNNO quota_status_nouser = DUNNO quota_status_overquota = "552 5.2.2 Mailbox is over quota" } After restarting the director service I try to query the quota status service: printf "recipient=user(a)domain.de\nsize=100000\n\n" | nc 10.0.1.44 12340 The output is: action=DEFER_IF_PERMIT Invalid user settings. Refer to server log for more information. In the debug log of the director I see this: Feb 23 03:03:09 director01 dovecot: auth: Debug: userdb out: USER 1 user(a)domain.de mail=mdbox:/mnt/data01/domain.de/user/maildir home=/mnt/data01/domain.de/user proxy=Y master=<hidden> pass=<hidden> uid=5000 gid=1 quota_rule=*:storage=60593 quota_rule2=*:messages=100000 Feb 23 03:03:09 director01 dovecot: quota-status(user(a)domain.de): Error: user user(a)domain.de: Initialization failed: Namespace '': mkdir(/mnt/data01/domain.de/user/maildir/mailboxes) failed: Permission denied (euid=5000(vmail) egid=1(daemon) missing +w perm: /mnt, dir owned by 0:0 mode=0755) So the quota status service tries to access the mailbox of the user ON THE DIRECTOR. But the director has not mounted the mailboxes of the users, that's what the backend dovecots are for (proxy=Y). So the quota-status query is not proxied to the dovecot backend server I would assume. Does that mean I have to start the quota-status service on the dovecot backend servers and access it from the Postfix server directly? Currently the Postfixes can only reach the directors, not the backend servers. Is it possible to use the quota-status service on the director? Thanks for any hints and help Michael

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[Dovecot] [PATCH, RFC] add APOP authentication mechanism
by Andrey Panin 14 Aug '17

14 Aug '17

Hello all, this patch add APOP authentication mechanism to dovecot 1.0-test23. Please take a look. Best regards. -- Andrey Panin | Linux and UNIX system administrator pazke(a)donpac.ru | PGP key: wwwkeys.pgp.net

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[Dovecot] Dovecot stops with "Fatal: kevent(): Invalid argument"
by Henrik Larsson 09 Jun '17

09 Jun '17

# 2.0.11: /usr/local/etc/dovecot/dovecot.conf # OS: FreeBSD 8.2-STABLE amd64 Dovecot stops with the following logged: - master: Fatal: kevent(): Invalid argument I have found that a diff was created for "src/lib/ioloop-kqueue.c" for a similar issue: http://dovecot.org/pipermail/dovecot/2010-November/054855.html I have patched my system with this and haven't seen the problem since, but I don't know if this is a coincidence. Could you please explain if the diff should actually fix anything or just add some more logging in case it stops again? Best regards Henrik Larsson

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imapc fetch optimization
by Nagy, Attila 27 Sep '16

27 Sep '16

Hi, imapc does a lot of UID FETCH $UID (BODY.PEEK[]), which is nice, because it works even with the dumbest IMAP server, altough it really kills performance, especially on high latency lines. I wonder: if IMAP servers can effectively handle boundless fetches (like a list with all wanted UIDs, or simply 1:* if all are needed), do you see this as a good addition to develop? This could be a new imapc_features setting afterall... Thanks,

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[Dovecot] Plugins: virtuals vs acls
by Leho Kraav 20 Sep '16

20 Sep '16

Hi all dovecot-virtual: * all when dovecot-acl files restrict some subset of * for a user, does dovecot respect these ACLs when collecting messages for virtual folder? I'd like a confirmation about what I should be seeing when I start implementing this setup.

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[Dovecot] How to disable SSL and TLSv1.1?
by Darren Pilgrim 16 Aug '16

16 Aug '16

I'm running Dovecot 2.2.5 and want to make it refuse SSLv2, SSLv3 and TLSv1.0. Clients will opportunistically use TLS 1.1 and 1.2, but now I want require they do so. Is it enough to set ssl_cipher_list = HIGH:!SSLv2:!SSLv3:!TLSv1.0:!aNULL:!MD5 or are there additional settings I need to specify?

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Option to not add "Received" header ?
by Florent B 27 Apr '16

27 Apr '16

Hi everyone, I use Dovecot in lmtp mode to receive mails. I would like an option to tell Dovecot to not add a "Reveived" header on each server (I use a director, so Director also adds this header). Is it possible to do this ? Or could it be a future feature ? Thank you. Florent

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[Dovecot] Patch: 2.0 support for URLAUTH, BURL, CATENATE
by Mike Abbott 18 Apr '16

18 Apr '16

Thank you Timo for beginning the port of URLAUTH, BURL, and CATENATE from 1.2 to 2.0. Attached please find two patches that finish the port to 2.0. One patch updates the dovecot-2.0-urlauth branch and is based on the tip of that branch. The other patch adds the full support to dovecot-2.0.beta5. The resulting URLAUTH/BURL/CATENATE code is the same. Please let me know if you have any questions about these patches. Thanks.

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[Dovecot] Replication and public namespaces
by Markus Weippert 11 Apr '16

11 Apr '16

Hi, I'm having some issues with replicating public namespaces. Everything seems to work fine for private namespaces, but while importing some huge mailboxes (many small mails) into a public namespace via imapsync, something goes wrong. The expected mail flow is: old-server (imapsync)> new-server1 (replication)> new-server2 But then, dovecot seems to run into race conditions when the replications process tries to sync the same public mailbox under two or more different users at the same time. As a result, messages get duplicated, new-server2 sends those back to new-server1 which then starts to produce duplicates too. If I don't kill the processes in time and delete the faulty mailbox, they start to produce thousands of mails. In fact, server2 should not export messages at all, since it's not productive yet and does not get any mail except from the replication. The only thing getting logged (only few compared to the huge amount of duplicates produced): "dsync-server(user(a)example.com): Warning: Maildir /...: Expunged message reappeared, giving a new UID" Is there any way to fix this? Regards, Markus doveadm_password = *********** doveadm_port = ***** mail_home = /var/vmail/private/%d/%n mail_location = maildir:~/mail mail_plugins = acl virtual listescape notify replication namespace inbox { inbox = yes location = prefix = separator = / type = private } namespace legacy { alias_for = # ... } namespace ns_public { list = children location = maildir:/var/vmail/public/%d prefix = Public/ separator = / subscriptions = no type = public } namespace virtual { # ... } plugin { mail_replica = tcps:************** } protocols = imap lmtp sieve replication_dsync_parameters = -d -l 60 -N -x virtual -x ns_public -U replication_full_sync_interval = 4 hours replication_max_conns = 20 service aggregator { fifo_listener replication-notify-fifo { user = vmail } unix_listener replication-notify { user = vmail } } service doveadm { inet_listener { port = 8143 ssl = yes } process_min_avail = 5 user = vmail vsz_limit = 4 G } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { mode = 0600 user = vmail } }

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basic configuratio error
by soko.tica 01 Feb '16

01 Feb '16

Hello list, After many hours I still fail to configure properly dovecot as the LDA with opensmtpd, for system users only. I don't want pop at all, jus lmtp and imap, but still haven't stripped it. Here is the info, thanks in advance for your response: ===== # doveconf -n # 2.2.14: /etc/dovecot/dovecot.conf # OS: OpenBSD 5.6 i386 auth_verbose = yes auth_verbose_passwords = yes disable_plaintext_auth = no first_valid_uid = 1000 hostname = imap.home.lan imap_client_workarounds = delay-newmail tb-extra-mailbox-sep tb-lsub-flags lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes lda_original_recipient_header = X-Original-To mail_debug = yes mail_location = maildir:~/Maildir 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 duplicate mbox_write_locks = fcntl mmap_disable = yes namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = bsdauth } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } pop3_client_workarounds = outlook-no-nuls oe-ns-eoh postmaster_address = postmaster(a)mileva.home.lan protocols = imap pop3 lmtp sieve service auth-worker { user = root } service auth { unix_listener auth-userdb { group = _dovenull mode = 0666 user = _dovenull } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } process_min_avail = 0 service_count = 1 } service imap { process_limit = 1024 } service lmtp { unix_listener lmtp { mode = 0666 } } service managesieve-login { inet_listener sieve { port = 4190 } inet_listener sieve_deprecated { port = 2000 } } ssl_cert = </etc/ssl/dovecotcert.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd } verbose_ssl = yes protocol lmtp { mail_plugins = } protocol lda { mail_plugins = } # /usr/local/sbin/dovecot -F Oct 28 13:00:01 mileva newsyslog[1110]: logfile turned over Oct 28 14:30:46 mileva dovecot: master: Dovecot v2.2.14 starting up for imap, pop3, lmtp, sieve Oct 28 14:30:46 mileva dovecot: master: Error: service(aggregator): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(pop3): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: open(/var/dovecot/login-master-notifya57a2b8821460734) failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(pop3-login): safe_mkstemp(/var/dovecot/login-master-notify) failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(log): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(lmtp): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(ipc): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(indexer-worker): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(indexer): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(imap): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(imap-urlauth-worker): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(imap-urlauth): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: open(/var/dovecot/login-master-notify5dd2a3a0591effcc) failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(imap-urlauth-login): safe_mkstemp(/var/dovecot/login-master-notify) failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: open(/var/dovecot/login-master-notify152a1bb891f6f764) failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(imap-login): safe_mkstemp(/var/dovecot/login-master-notify) failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(doveadm): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(dns_client): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(director): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(dict): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(config): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(auth): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(auth-worker): pipe() failed: Too many open files Oct 28 14:30:46 mileva dovecot: master: Error: service(anvil): command startup failed, throttling for 2 secs Oct 28 14:30:56 mileva dovecot: master: Error: service(ssl-params): command startup failed, throttling for 2 secs [snipped 18 pages of /var/log/maillog] Oct 28 20:47:44 mileva dovecot: master: Dovecot v2.2.14 starting up for imap, pop3, lmtp, sieve Oct 28 20:47:44 mileva dovecot: master: Error: service(aggregator): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(pop3): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: open(/var/dovecot/login-master-notifydd522320d99e7f4c) failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(pop3-login): safe_mkstemp(/var/dovecot/login-master-notify) failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(log): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(lmtp): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(ipc): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(indexer-worker): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(indexer): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(imap): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(imap-urlauth-worker): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(imap-urlauth): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: open(/var/dovecot/login-master-notify95aa9b38117677e4) failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(imap-urlauth-login): safe_mkstemp(/var/dovecot/login-master-notify) failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: open(/var/dovecot/login-master-notify4d021350494e6f7c) failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(imap-login): safe_mkstemp(/var/dovecot/login-master-notify) failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(doveadm): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(dns_client): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(director): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(dict): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(config): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(auth): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(auth-worker): pipe() failed: Too many open files Oct 28 20:47:44 mileva dovecot: master: Error: service(anvil): command startup failed, throttling for 2 secs Oct 28 20:47:46 mileva dovecot: master: Warning: Killed with signal 2 (by pid=0 uid=0 code=kill) Oct 28 20:47:46 mileva dovecot: master: Error: open(/var/dovecot/.temp.mileva.home.lan.17422.055a8b6881266714) failed: Too many open files Oct 28 20:47:46 mileva dovecot: master: Error: file_dotlock_open(/var/dovecot/instances) failed: Too many open files Oct 28 20:47:46 mileva dovecot: master: Error: service(ssl-params): command startup failed, throttling for 2 secs # /usr/sbin/smtpd -n configuration OK

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