- dovecot - dovecot.org

SASL LOGIN : connection to server lost with more than 10 simulatneaous postfix smtps
by Ve (HOME) 04 Sep '14

04 Sep '14

Hi All, I have a problem with SASL authentification from postfix when more than 10 mails is sent from the same user simultaneously Postfix abort connection ( Connection lost to authentication server ). Dovecot log after the postfix error an error about connection lost also ( read EOF ) I don't seem to find a parameter for a maximum of connection for the auth process ( ther's one for imap, pop, .. ) but none for auth. Do you have an idea of a way to solve this problem or to have better information ? result of Docecot -n # 2.2.13: /etc/dovecot/dovecot.conf # OS: Linux 3.15.6-gentoo-xxxx-std-ipv6-64 x86_64 Gentoo Base System release 2.2 auth_default_realm = aprogsys.com auth_mechanisms = plain login auth_username_format = %Ln dict { acl = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext } disable_plaintext_auth = no dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u first_valid_uid = 1001 lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes mail_access_groups = dovecot mail_location = mdbox:~/mdbox mail_plugins = " acl notify replication" 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 namespace inbox { inbox = yes list = 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 = separator = / } passdb { args = * driver = pam } plugin { acl = vfile acl_anyone = allow acl_shared_dict = proxy::acl antispam_backend = DSPAM antispam_debug_target = syslog antispam_dspam_args = --source=error;--signature=%%s;--user;%n antispam_dspam_binary = /usr/bin/dspam antispam_signature = X-DSPAM-Signature antispam_spam = SPAM antispam_trash = Trash antispam_verbose_debug = 1 mail_replica = remote:root@192.168.1.7 replication_dsync_parameters = -d -U sieve = ~/.dovecot.sieve sieve_before = /var/lib/dovecot/sieve sieve_default = /var/lib/dovecot/sieve/spam.sieve sieve_dir = ~/sieve } protocols = imap pop3 lmtp sieve replication_max_conns = 2 service aggregator { fifo_listener replication-notify-fifo { mode = 0666 } unix_listener replication-notify { mode = 0666 } } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { mode = 0777 } user = root } service dict { unix_listener dict { mode = 0666 } } service imap-login { process_min_avail = 4 service_count = 0 vsz_limit = 256 M } service managesieve-login { inet_listener sieve { port = 4190 } inet_listener sieve_deprecated { port = 2000 } } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { mode = 0666 } } ssl_cert = </etc/ssl/dovecot/server.pem ssl_key = </etc/ssl/dovecot/server.pem userdb { driver = passwd } protocol lda { mail_plugins = " acl notify replication sieve" } protocol imap { imap_client_workarounds = delay-newmail tb-extra-mailbox-sep tb-lsub-flags mail_max_userip_connections = 40 mail_plugins = " acl notify replication antispam imap_acl" }

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Trying Dovecot Replication with dsync
by Listas＠Adminlinux 04 Sep '14

04 Sep '14

Hi, I have a failover cluster for mail server with: Ubuntu12.04 + DRBD (for block replication) + Ext4 filesystem + Dovecot-2.0.19-2 with Mdbox It works fine with ~50k accounts. My cluster design: http://adminlinux.com.br/cluster_design.txt I plan to test Dovecot Replication with dsync to build an active/active cluster with load balancing. Can anyone direct me to some literature? A tutorial for example. I'm installing a cluster (for tests) with Ubuntu 14.04 + Ext4 filesystem (without Drbd) + Dovecot-2.2.9-1ubuntu2.1. My conf is in: http://adminlinux.com.br/replication-doveconf.txt I'm following this doc http://wiki2.dovecot.org/Replication but I'm getting some errors: 1) Aug 14 15:39:34 ceph1 dovecot: imap(account=domaintest.com): Error: open(/var/run/dovecot/replication-notify-fifo) failed: Permission denied What is the correct perms for /var/run/dovecot/replication-notify-fifo ? Currently: # ll /var/run/dovecot/replication-notify-fifo prw------- 1 root root 0 Aug 14 15:57 /var/run/dovecot/replication-notify-fifo| 2) Aug 14 16:02:34 ceph1 dovecot: dsync-server(account=domaintest.com): Error: Couldn't create lock /var/lib/imap/account=domaintest.com/.dovecot-sync.lock: No such file or directory Aug 14 16:02:34 ceph1 dovecot: dsync-local(account=domaintest.com): Error: Couldn't create lock /var/lib/imap/account=domaintest.com/.dovecot-sync.lock: No such file or directory In my production cluster, it is automatically created by dovecot when the user performs the first login: /var/lib/imap/<account> for INDEX /var/spool/imap/<account> for Mdbox Thanks! -- Thiago Henrique

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Some Dsync Replication Errors
by Asai 04 Sep '14

04 Sep '14

Greetings, Working on setting up replication and ran into some errors I have questions about and wondering if there's something I need to change. This one is fairly common: Sep 3 12:58:25 molecular dovecot: dsync-server(user(a)domain.org): Warning: Failed to do incremental sync for mailbox INBOX, retry with a full sync (Modseq 100298 no longer in transaction log) These two I ran into yesterday and today: Sep 2 11:13:32 molecular dovecot: dsync-server(user2(a)domain2.org): Error: Timeout during state=slave_recv_last_common Sep 3 12:52:08 molecular dovecot: dsync-server(user3(a)domain3.org): Error: read(remote.mailserver.net) failed: EOF Configs: mail_plugins = notify replication service doveadm { inet_listener { port = 1234 } } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { mode = 0600 } } service aggregator { fifo_listener replication-notify-fifo { user = vmail mode = 0600 } unix_listener replication-notify { user = vmail mode = 0600 } } plugin { mail_replica = tcp:sub.domain.org:1234 } And doveconf -n: [root@molecular dovecot]# doveconf -n # 2.2.13.16 (94835dd63163): /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-431.el6.x86_64 x86_64 Scientific Linux release 6.5 (Carbon) ext4 auth_mechanisms = plain login auth_verbose = yes auth_verbose_passwords = plain deliver_log_format = msgid=%m: from=%f: %$ doveadm_password = secret doveadm_port = 1234 mail_debug = yes mail_home = /vmail/%d/%n/home mail_location = maildir:/vmail/%d/%n mail_plugins = notify replication 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 namespace { inbox = yes location = prefix = separator = / type = private } passdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } plugin { mail_log_fields = box msgid from flags mail_replica = tcp:sub.domain.org:1234 sieve = /vmail/%d/%n/home/.dovecot.sieve sieve_dir = /vmail/%d/%n/home/sieve } protocols = imap pop3 lmtp sieve service aggregator { fifo_listener replication-notify-fifo { mode = 0600 user = vmail } unix_listener replication-notify { mode = 0600 user = vmail } } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-master { group = vmail mode = 0660 user = vmail } unix_listener auth-userdb { mode = 0660 user = vmail } user = root } service doveadm { inet_listener { port = 1234 } } service imap-login { process_min_avail = 3 service_count = 0 vsz_limit = 0 } service managesieve-login { inet_listener sieve { port = 4190 } process_min_avail = 0 service_count = 1 vsz_limit = 64 M } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { mode = 0600 } } ssl_cert = </etc/postfix/ssl/sub.domain.org.pem ssl_key = </etc/postfix/ssl/domain.key userdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } protocol lda { hostname = sub.domain2.org mail_plugin_dir = /usr/lib64/dovecot/ mail_plugins = sieve postmaster_address = postmaster(a)domain2.org } protocol imap { imap_idle_notify_interval = 24 mins mail_max_userip_connections = 60 } protocol sieve { mail_max_userip_connections = 10 managesieve_implementation_string = Dovecot Pigeonhole managesieve_logout_format = bytes=%i/%o managesieve_max_line_length = 65536 } -- --Asai

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Insert custom header in Mail logger plugin
by Bruno Galindro da Costa 03 Sep '14

03 Sep '14

Is it possible to log a message custom header through Mail logger plugin or other method? It seems that there are a fixed number of info that is configurable via mail_log_fields (http://wiki2.dovecot.org/Plugins/MailLog) .. My custom header is X-VERTICAL-IP-Quarantine-ID and I want a log event like this one: Aug 27 09:48:13 imap dovecot: imap(user@domain): copy from INBOX: box=SPAM, uid=213, *X-VERTICAL-IP-Quarantine-ID=u7cnUqYDPA9a*, msgid=< 0.0.D7.290.1CFC155CE887302.0(a)etm2.com>, size=26481, vsize=26949, from==?UTF-8?Q?Dafiti=20-=20Parceiros?= <aaa@domain>, subject==?UTF-8?Q?Sapatos=20com=2040%OFF?==?UTF-8?Q?!=20Apro?=? =?UTF-8?Q?veite!?= -- Att. Bruno Galindro da Costa

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Setup sieve failed
by Christian Vielhauer 03 Sep '14

03 Sep '14

Hi, I try to setup sieve but I have some trouble. Using dovecot 2.2.9 on Ubuntu 14.04.1 LTS. I replaced my correct domain with „domain.tld“. I am able to create sieve scripts using SOGo. The scripts are created in my mailbox. For example in /var/www/kunden/mail/domain.tld/testuser/sieve/sogo.sieve I have the following script and in same ~/sieve folder is a subdirectory available that’s called "tmp“: ~/sieve ~/sieve/tmp require ["vacation"]; if allof ( not exists ["list-help", "list-unsubscribe", "list-subscribe", "list-owner", "list-post", "list-archive", "list-id", "Mailing-List"], not header :comparator "i;ascii-casemap" :is "Precedence" ["list", "bulk", "junk"], not header :comparator "i;ascii-casemap" :matches "To" "Multiple recipients of*" ) {vacation :days 1 :addresses [„testuser(a)domain.tld"] text: This is a vacation test message. Please ignore. . ; } Now I open /var/log/mail.err and I can see the following: Sep 3 17:50:09 mail dovecot: imap(testuser(a)domain.tld): Error: stat(/var/www/kunden/mail/domain.tld/testuser/.dovecot.sieve/tmp) failed: Not a directory I try to create ~/.dovecot.sieve folder, but this file exists and is a symlink. 0 lrwxrwxrwx 1 vmail vmail 16 Sep 3 18:14 .dovecot.sieve -> sieve/sogo.sieve I think I have some miss configuration because i don’t receive any vacation reply when I send mail to my testuser. In log files i cannot see any entries according to my sieve script. Here is my dovecot -n # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.13.0-35-generic x86_64 Ubuntu 14.04.1 LTS ext4 auth_default_realm = domain.tld auth_mechanisms = plain login default_vsz_limit = 512 M hostname = mail.domain.tld mail_location = maildir:/var/www/kunden/mail/%d/%n mail_plugins = quota zlib fts 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 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 { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } passdb { args = nopassword=y allow_nets=10.27.1.20/32 driver = static } plugin { quota = maildir:User quota quota_exceeded_message = Quota exceeded, please go to http://www.example.com/over_quota_help for instructions on how to fix this. quota_rule2 = Trash:storage=+100M quota_rule3 = Archive:storage=+100%% quota_rule4 = Archive.2012:storage=+100%% quota_rule5 = Archive.Gesendet:storage=+100%% quota_warning = storage=99%% quota-exceeded 100 %u quota_warning1 = storage=99%% quota-exceeded 99 %u quota_warning10 = storage=80%% quota-warning 90 %u quota_warning11 = storage=80%% quota-warning 80 %u quota_warning12 = storage=50%% quota-warning 50 %u quota_warning2 = storage=95%% quota-warning 98 %u quota_warning3 = storage=95%% quota-warning 97 %u quota_warning4 = storage=95%% quota-warning 96 %u quota_warning5 = storage=95%% quota-warning 95 %u quota_warning6 = storage=80%% quota-warning 94 %u quota_warning7 = storage=80%% quota-warning 93 %u quota_warning8 = storage=80%% quota-warning 92 %u quota_warning9 = storage=80%% quota-warning 91 %u sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } postmaster_address = postmaster(a)domain.tld protocols = " imap lmtp sieve pop3" quota_full_tempfail = yes service auth { unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix mode = 0660 user = postfix } } service dns_client { unix_listener dns-client { mode = 0600 } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } service_count = 0 } service imap { client_limit = 5 process_limit = 200 service_count = 0 vsz_limit = 2 G } service lmtp { unix_listener lmtp { mode = 0600 } } service managesieve-login { inet_listener sieve { port = 4190 } inet_listener sieve_deprecated { port = 2000 } } service pop3-login { inet_listener pop3 { port = 110 } inet_listener pop3s { port = 995 ssl = yes } } service pop3 { client_limit = 5 process_limit = 200 service_count = 0 } service quota-exceeded { executable = script /usr/local/bin/quota-exceeded.sh unix_listener quota-exceeded { user = vmail } user = root } service quota-warning { executable = script /usr/local/bin/quota-warning.sh unix_listener quota-warning { user = vmail } user = root } ssl = required ssl_ca = </certificate/domain_tld.ca-bundle ssl_cert = </certificate/domain_tld.crt ssl_cipher_list = ALL:!LOW:!SSLv2:!EXP:!aNULL:!ADH:!eNULL ssl_key = </certificate/domain_tld.key userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } userdb { args = uid=5000 gid=5000 home=/var/www/kunden/mail/%d/%Ln driver = static } protocol lmtp { mail_plugins = quota zlib fts sieve } protocol lda { mail_plugins = quota zlib fts sieve } protocol imap { mail_plugins = quota zlib fts imap_quota imap_zlib quota zlib } Please help me to fix my problems and get sieve running.

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quota for subfolder with prefix=INBOX.
by Jogi Hofmüller 03 Sep '14

03 Sep '14

Hi all, We use prefix=INBOX. in order to keep things as they were on the old server. Now I started playing with quota and have trouble getting the additional quota for Trash and/or Junk working. My expectation was that once a user is over quota and moves email to trash sh/e should be able to receive new email again. That's what I cannot get to work with our setup. Attached you find the config that I thought should be working. The numbers are ridiculously low but that's just for testing. Here is some output from doveadm doveadm quota get -u user Quota name Type Value Limit % User quota STORAGE 5422 5120 105 User quota MESSAGE 18 - 0 doveadm mailbox status -u user "messages vsize" "*" INBOX messages=13 vsize=3147033 doveadm mailbox status -u user "messages vsize" "INBOX.*" INBOX.Drafts messages=0 vsize=0 INBOX.Sent messages=0 vsize=0 INBOX.Trash messages=5 vsize=2475790 INBOX.Junk messages=0 vsize=0 Regards, -- j.hofmüller We are all idiots with deadlines. - Mike West

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Assertion failed in sql_transaction_commit with pgsql driver
by Potapov Sergey 03 Sep '14

03 Sep '14

Hi! Next code from driver_pgsql_transaction_commit cause assertion failed in do_query function - i_assert(SQL_DB_IS_READY(&db->api)) } else { /* multiple queries, use a transaction */ ctx->refcount++; sql_query(_ctx->db, "BEGIN", transaction_begin_callback, ctx); <- first sql_query changes db state to SQL_DB_STATE_BUSY while (_ctx->head != NULL) { ctx->refcount++; sql_query(_ctx->db, _ctx->head->query, <- second query cause assertion failed due to SQL_DB_IS_READY returns false transaction_update_callback, _ctx->head); _ctx->head = _ctx->head->next; } sql_query(_ctx->db, "COMMIT", transaction_commit_callback, ctx); } Next transaction query should be called after previous is finished and driver state changed to SQL_DB_STATE_IDLE

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Dovecot is looking for .dovecot.lda-dupes in the wrong place
by Michael 03 Sep '14

03 Sep '14

Hi, I just moved the dovecot maildir location for all virtual users to another location. I moved everything from /var/mail/vhosts/%d/%n to /var/vmail/%d/%n/maildir Everything seem to be fine except of one recurring error: Sep 2 10:16:09 mx0 dovecot: lmtp(13226, sv_bogies(a)neurohr.at) Error: file_dotlock_open(/var/mail/vhosts/domain.at/michael/.dovecot.lda-dupes) failed: No such file or directory Sep 2 13:31:27 mx0 dovecot: lmtp(16248, sv_bogies(a)neurohr.at) Error: file_dotlock_open(/var/mail/vhosts/domain.at/michael/.dovecot.lda-dupes) failed: No such file or directory So Dovecot is looking in the old path. How can I fix that? Thanks, Michael doveconf -n # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.13.0-35-generic x86_64 Ubuntu 14.04.1 LTS ext4 auth_mechanisms = plain login mail_location = maildir:/var/vmail/%d/%n/maildir mail_plugins = notify acl quota mail_privileged_group = vmail mail_shared_explicit_inbox = yes 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 imapflags namespace { list = children location = maildir:/var/vmail/%%d/%%n/maildir:INDEX=/var/vmail/%d/%n/maildir/shared/%%u prefix = shared/%%u/ separator = / subscriptions = no type = shared } 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 Spam { auto = subscribe special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / } passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } plugin { acl = vfile acl_shared_dict = file:/var/lib/dovecot/db/shared-mailboxes.db antispam_allow_append_to_spam = yes antispam_backend = pipe antispam_pipe_program = /usr/sbin/sendmail antispam_pipe_program_args = -i;-f;%u antispam_pipe_program_notspam_arg = sh antispam_pipe_program_spam_arg = sm antispam_spam = Spam antispam_trash = trash;Trash;Deleted Items;Deleted Messages fts_autoindex = yes quota = maildir:User quota quota_rule = *:storage=9G quota_rule2 = Trash:storage=+100M sieve = /var/vmail/%d/%n/sieve-scripts/.dovecot.sieve sieve_before = /var/vmail/sieve-scripts/before sieve_dir = /var/vmail/%d/%n/sieve-scripts/sieve sieve_extensions = +imapflags } postmaster_address = postmaster(a)neurohr.at protocols = " imap lmtp sieve pop3" service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { mode = 0666 user = vmail } } service dict { unix_listener dict { user = vmail } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } } userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } protocol lmtp { mail_plugins = sieve } protocol lda { mail_plugins = sieve } protocol imap { mail_max_userip_connections = 20 mail_plugins = notify acl quota imap_acl imap_quota antispam }

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Trouble viewing Inbox via IMAP Client
by Peter Cook 02 Sep '14

02 Sep '14

Hello, I have been having trouble with this issue for quite some time now. Here is my environment: CentOS 6.5, Postfix built with PGSQL support, PFA, and dovecot. The problem I am having is that I can send and receive mail fine, but when I try to view my Inbox in an IMAP client like Thunderbird, I can only view sent mail and trash. Here is the result of my dovecot -- version and dovecot -n --version 2.0.9 dovecot -n # 2.0.9: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-431.el6.x86_64 x86_64 CentOS release 6.5 (Final) ext4 auth_debug = yes auth_debug_passwords = yes disable_plaintext_auth = no mail_location = maildir:/var/mail/vmail/%d/%n/ mbox_write_locks = fcntl passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } passdb { driver = pam } protocols = imap pop3 service auth { group = postfix unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } user = postfix } ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } userdb { driver = passwd }

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dsync-server couldn't create .dovecot-sync.lock file
by Listas＠Adminlinux 02 Sep '14

02 Sep '14

My dovecot stores users' emails on /var/spool/imap/<user> and stores the messages index on /var/lib/imap/<user>. I have many users who do not yet have their userdb_home directories created on the server, because that is created at the time of first login. I'm testing dsync for replication and have seen the following error: dsync-server(<user>): Error: Couldn't create lock /var/lib/imap/<user>/.dovecot-sync.lock: No such file or directory The /var/lib/imap/<user> directory does not exist yet and I think this is the cause. How can I avoid this error message? ================================================================================ root@myserver2:/root# doveconf -n # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.13.0-30-generic x86_64 Ubuntu 14.04.1 LTS auth_master_user_separator = * auth_mechanisms = plain login auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@= auth_worker_max_count = 1 disable_plaintext_auth = no doveadm_password = secret doveadm_port = 12345 listen = myserver2.mydomain.com log_path = /var/log/dovecot.log login_greeting = MAILBOX IMAP/POP3 server mail_fsync = never mail_gid = dovemail mail_plugins = " notify replication quota" mail_uid = dovemail passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } passdb { args = /etc/dovecot/dovecot-sql-master.conf.ext driver = sql master = yes pass = yes } plugin { mail_replica = tcp:myserver1.mydomain.com:12345 quota = dict:User quota::file:/var/lib/imap/%n/dovecot-quota quota_rule = *:storage=1GB } protocols = imap pop3 lmtp service auth-worker { user = $default_internal_user } service auth { client_limit = 1024 process_limit = 1 process_min_avail = 1 } service doveadm { inet_listener { port = 12345 } } service imap { process_limit = 1024 process_min_avail = 1 } service lmtp { inet_listener { address = myserver2.mydomain.com port = 24 } process_limit = 256 process_min_avail = 1 } service pop3-login { inet_listener pop3 { address = myserver2.mydomain.com port = 110 } } service pop3 { process_limit = 256 process_min_avail = 1 } service replicator { process_min_avail = 1 } ssl = no userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep imap_idle_notify_interval = 2 mins imap_max_line_length = 64 k mail_max_userip_connections = 50 mail_plugins = " notify replication quota imap_quota" } protocol lmtp { mail_fsync = optimized mail_plugins = " notify replication sieve quota" } protocol pop3 { mail_plugins = " notify replication quota" } ================================================================================ Thanks! -- Thiago Henrique

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How to setup a dovecot lmtp proxy server ?
by Webster Liang 02 Sep '14

02 Sep '14

Dear All : I want to setup a dovecot lmtp proxy server , my target as below : Postfix (lmtp) -->dovecot lmtp proxy servers-->dovecot backend servers but i don't know how to setup the dovecot lmtp proxy server , who can help me ? thanks a lot . -- View this message in context: http://dovecot.2317879.n4.nabble.com/How-to-setup-a-dovecot-lmtp-proxy-serv… Sent from the Dovecot mailing list archive at Nabble.com.

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Master user and non-plaintext auth does not work
by SATOH Fumiyasu 01 Sep '14

01 Sep '14

Hi, I want to use CRAM-MD5 or DIGEST-MD5 (non-plaintext) authentication for master users, but Dovecot 2.2.13 rejects it with the following log: Sep 1 06:18:08 localhost dovecot: auth: passwd-file(masteruser,10.0.1.20,master,<ZA1s9/oBgAAKAAEU>): Master user logging in as u0001 Sep 1 06:18:08 localhost dovecot: auth: cram-md5(u0001(a)example.jp,10.0.1.20,<ZA1s9/oBgAAKAAEU>): password mismatch Sep 1 06:18:10 localhost dovecot: imap-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<u0001(a)example.jp>, method=CRAM-MD5, rip=10.0.1.20, lip=10.0.103.100, secured, session=<ZA1s9/oBgAAKAAEU> PLAIN and LOGIN are OK: Sep 1 06:20:34 localhost dovecot: auth: passwd-file(masteruser,10.0.1.20,master,<SpwmAPsBgwAKAAEU>): Master user logging in as u0001 Sep 1 06:20:34 localhost dovecot: imap-login: Login: user=<u0001(a)example.jp>, method=PLAIN, rip=10.0.1.20, lip=10.0.103.100, mpid=23743, secured, session=<SpwmAPsBgwAKAAEU> Sep 1 06:20:34 localhost dovecot: imap(u0001(a)example.jp): SpwmAPsBgwAKAAEU: Connection closed in=13 out=663 I have the following configuration in my dovecot.conf: auth_mechanisms = plain login cram-md5 digest-md5 disable_plaintext_auth = yes auth_master_user_separator = % passdb { driver = passwd-file args = /etc/dovecot/passwd.masterusers master = yes pass = yes } # don't work too #passdb { # driver = checkpassword # args = /opt/osstech/etc/dovecot/checkpassword.masterusers # master = yes # pass = yes #} passdb { driver = ldap args = /etc/dovecot/dovecot-ldap.conf.ext } Is this a bug or a restriction of Dovecot? -- -- Name: SATOH Fumiyasu @ OSS Technology Corp. (fumiyas @ osstech co jp) -- Business Home: http://www.OSSTech.co.jp/ -- GitHub Home: https://GitHub.com/fumiyas/ -- PGP Fingerprint: BBE1 A1C9 525A 292E 6729 CDEC ADC2 9DCA 5E1C CBCA

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mail_location hashing & lowercasing?
by Ralf Hildebrandt 31 Aug '14

31 Aug '14

Currently, I'm using mail_location = mdbox:/var/spool/mail/%Ld/%Ln/mdbox Now I want to add a partitioning (so I don'T have all directories in one single directory), but can't find the right syntax: mail_location = mdbox:/var/spool/mail/%Ld/<HASHING HERE>/%Ln/mdbox It seems like I'd need to use %N (new hash) on %Ln and then take a substring of that. %2NLn 2 Characters of the %N hash of %Ln (the lowercase username) But this gives me a verbatim "Ln" on the path! -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein

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Need help to compile and install a minimal dovecot imap plugin
by Stefan Arentz 31 Aug '14

31 Aug '14

I am trying to create a plugin that adds a new IMAP capability. So far I have this: const char *foo_plugin_version = DOVECOT_ABI_VERSION; static struct module *foo_module; static imap_client_created_func_t *next_hook_client_created; static void foo_client_created(struct client **client) { str_append((*client)->capability_string, " XFOO"); if (next_hook_client_created != NULL) { next_hook_client_created(client); } } void foo_plugin_init(struct module *module) { i_info(“init”); foo_module = module; next_hook_client_created = imap_client_created_hook_set(foo_client_created); } void foo_plugin_deinit(void) { i_info(“deinit”); imap_client_created_hook_set(next_hook_client_created); } const char foo_plugin_binary_dependency[] = "imap”; On Fedora 20, with the dovecot and dovecot-devel packages installed, I compile this with: cc -Wall -shared -fPIC -DHAVE_CONFIG_H -I/usr/include/dovecot -o lib20_foo_plugin.so foo-plugin.c And then install with: sudo cp lib20_foo_plugin.so /usr/lib64/dovecot/ (I also have mail_plugin_dir = /usr/lib64/dovecot in 10-mail.conf) I enable this plugin in /etc/dovecot/conf.d/20-imap.conf with: protocol imap { mail_plugins = $mail_plugins foo } But … nothing happens. No warnings, no errors, no crashes. How do I debug this? Am I missing something obvious? Does the naming of the plugin matter? S.

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Tarballs for dovecot 1.2.17 and pigenhole where to find it?
by Benny Pedersen 31 Aug '14

31 Aug '14

Just like to have in case i need to rebuild from source on gentoo, since i change mysql from 5.1 to 5.5 slot i think dovecot need rebuilding

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Misleading error message when case-insensitive file/dir names from config files clash with case-sensitive file system.
by Info Akra 30 Aug '14

30 Aug '14

Hi, Is it noted somewhere that Dovecot (v 2.0.9) doesn’t use case in directory names in its config-files? I found that out the hard way (i.e. a week of debugging)!! in /etc/dovecot/conf.d/10-master.conf, the line: unix_listener /var/spool/postOut/auth/dovecot-auth { creates a: Jul 29 22:15:58 server dovecot: master: Error: service(auth): unlink(/var/run/dovecot/) failed: Is a directory but unix_listener /var/spool/postout/auth/dovecot-auth { works just fine (with matching case changes on the directory names themselves). That’s on running on Ubuntu 12.04.4 TLS, standard installation from apt-get, in cooperation with Postfix 2.0.9. — Hugo

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Dsync setup... help needed
by Sinergizmas Sin ergizmas 30 Aug '14

30 Aug '14

Hello, I tried to implement Dsync (doveadm version 2.2.10) following https://www.evilcoder.org/2014/08/22/automatic-replication-with-dovecot/ but had no luck. SSH commands working quite well, but I need to respond more quickly. So TCP looks promising. I have Centos 6, Dovecot 2.2.10. I did everything that is written there, but after I restart dovecot doesn't sync. Then i ran netstat command but no service listen to port 12345 also. Iptables service are of in testing scenario...

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Migrating courier to dovecot
by Patrick Lion 29 Aug '14

29 Aug '14

Hi, i want to migrate the following setup: postfix / courier-{imap/s,pop3/s,authlib} / maildrop / mysql I´m using the maildir format and quotas as well. My target is the following setup: postfix / dovecot / some sort of quota respecting lda / mysql What i`ve done already: SQL-Implementation for dovecot, login process and also sending mails via auth-userdb is already working. Quotas are read out from database and working. Before i mention my problems while implementing, here is the config im using at this time: # 2.2.13: /etc/dovecot/dovecot.conf # OS: Linux 3.14.14-gentoo x86_64 Gentoo Base System release 2.2 auth_mechanisms = plain login auth_socket_path = /var/run/dovecot/auth-userdb auth_verbose = yes disable_plaintext_auth = no info_log_path = syslog login_log_format_elements = user=<%u> method=%m ip=%r mpid=%e mail_debug = yes mail_location = maildir:.maildir mail_plugins = quota namespace inbox { inbox = yes location = .maildir 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 = INBOX. separator = . } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { args = /etc/dovecot/dovecot-sql.conf.ext quota = maildir:User quota quota_rule = %u quota_rule2 = trash:storage=+150M quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=80%% quota-warning 80 %u } service auth { unix_listener /var/spool/postfix/private/auth { group = mail mode = 0660 user = postfix } unix_listener auth-userdb { group = mail mode = 0660 user = postfix } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0666 user = postfix } } ssl_cert = </etc/ssl/dovecot/server.pem ssl_key = </etc/ssl/dovecot/server.key userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol imap { mail_plugins = quota imap_quota } protocol pop3 { mail_plugins = quota } grep -v '^ *$#.*$\?$' dovecot-sql.conf.ext driver = mysql connect = host=127.0.0.1 dbname=postfix user=postfix password=thereisone default_pass_scheme = MD5-CRYPT password_query = \ SELECT username, password \ FROM mailbox WHERE username = '%u' user_query = \ SELECT concat('/', home, user, '/', destinationname) AS home, uid, gid, \ concat('*:storage=', round(quota / 1000 * 1.024)) AS quota_rule \ FROM mailbox WHERE username = '%u' Where user is the row where the admin-panel user is stored and username is the mbox-user. My problem is the LDA, with dovecot-lda im having the uid / gid trouble and i really dont want to suid oder sudo it. dovecot-lmtp just gives me status=deferred (host xx.xx[/var/run/dovecot/lmtp] said: 451 4.3.0 <box(a)xx.xx> Temporary internal error (in reply to end of DATA command)) Postfix virtual is working as well as maildrop, but no dovecot-implementation wants to, i also didnt find anything about the error above, except a bug in v2.2.2 and a google groups thread where users are just blaming each others for nothing .. I want to use a dovecot lda/lmtp because the quota settings for trash-folders are very nice and reducing my support times but im stuck at getting one of the dovecot-LDAs to work. Let me know if you need any additional information. Any help is greatly appreciated! -- Viele Grüße / Best regards Patrick

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Multiple A Records for IMAP service
by Vijay Rajah 29 Aug '14

29 Aug '14

Hello All, I have a quick question. I have 2 MX servers each with a Dovecot Instances (2.2.6). These 2 Dovecot Instances are replicated by using Dsync... All works well. The questions is, Can I have 2 A records for my imap.mydomain.tld? The Idea being, if for any reason, one of the Dovecot IMAP instances are unreachable, the client can connect to the other Instance. (this is purely a fail over scenario). If it matters, The clients are Thunderbird, Android Native (default) Mail client, iOS Mail Client. -Thanks in advance Vijay

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Re: About Dovecot cluster and filesystems...
by Listas＠Adminlinux 29 Aug '14

29 Aug '14

Thank you Andreas!! > If you keep two separate storage areas you will have to figure out > how to sync them. But Dovecot Replication with dsync via tcp solves it. Right? Regards -- Thiago Henrique Em 29-08-2014 08:41, Andreas Kasenides escreveu: > This is what http://wiki2.dovecot.org/Director says. > If you keep two separate storage areas you will have to figure out how > to sync them. > And then make sure to keep the sync running smoothly and efficiently > without hick-ups. > Otherwise the potential exists that the users will see different things > upon login (at least temporarily). > > Andreas

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Documentation for /usr/lib/dovecot/imap executable
by Christoph Groth 29 Aug '14

29 Aug '14

Dear Dovecot experts, I'm in the process of setting up dovecot with mbsync as a local cache for remote IMAP servers. One recipe that I found involves using the /usr/lib/dovecot/imap (This is with Debian's dovecot package). For example, in .mbsyncrc I have IMAPAccount cwg-wf-local RequireSSL no Tunnel "/usr/lib/dovecot/imap -o mail_location=maildir:/home/cwg/.mail/cwg-wf" This works, but I wonder: is there any documentation for the /usr/lib/dovecot/imap executable? What options does it take? If there's no documentation: where can I find this command in dovecot's sources? Thank you, Christoph

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Postfix + dovecot setup
by Timothy Murphy 29 Aug '14

29 Aug '14

I'm trying to clarify the various ways in which I could set up Postfix + Dovecot + SpamAssassin under CentOS-7, and I'd welcome any comments on the following remarks. As far as I can see there are 3 standard ways of setting this up: 1. Use amavisd 2. Use dovecot + pigeonhole/sieve 3. Use spamass-milter At present I'm following (2), but am thinking of going over to (1), since this seems simpler. (Amavisd wasn't available when I set up CentOS-7, so I didn't consider it then.) It seems to me that (2) is using dovecot in a slightly odd way, since as far as I can see dovecot normally takes email from ~/Maildir/cur/ and then moves marked spam. I'm not quite sure if (3) is a genuine alternative, or if it is why it is not the standard? -- Timothy Murphy e-mail: gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin 2, Ireland

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About Dovecot cluster and filesystems...
by Listas＠Adminlinux 28 Aug '14

28 Aug '14

Hi all! Does dovecot cluster (with Proxy/Director) work only distributed filesystems (like NFS) ? Is Dovecot-replication + Ext4 recommended for production environments? Thanks! -- Thiago Henrique

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Dovecot Master User
by Clovis Tristao 28 Aug '14

28 Aug '14

Hi, I'm trying to use imapsync to migrate my accounts and mailbox (mbox) of an server A (Postfix + Dovecot) to a Server B (Zimbra), without having to change user passwords on the server A, using a master user account. I'm using this paper http://wiki2.dovecot.org/Authentication/MasterUsers as guidance. The Dovecot server A, is not letting me authenticate. Follow the testing and debug below: Testing: # telnet <ip_address> 8143 Trying <ip_address>... Connected to <ip_address>. Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN] Dovecot ready. a login mailadm*masteruser masterpass a NO [AUTHENTICATIONFAILED] Authentication failed. b logout * BYE Logging out b OK Logout completed. Connection closed by foreign host. Debug: /var/log/maillog: Aug 28 10:29:51 centosVM dovecot: master: Dovecot v2.0.9 starting up (core dumps disabled) Aug 28 10:30:02 centosVM dovecot: auth: Debug: Loading modules from directory: /usr/lib64/dovecot/auth Aug 28 10:30:02 centosVM dovecot: auth: Debug: Module loaded: /usr/lib64/dovecot/auth/libauthdb_ldap.so Aug 28 10:30:02 centosVM dovecot: auth: Debug: Module loaded: /usr/lib64/dovecot/auth/libdriver_sqlite.so Aug 28 10:30:02 centosVM dovecot: auth: Debug: Module loaded: /usr/lib64/dovecot/auth/libmech_gssapi.so Aug 28 10:30:02 centosVM dovecot: auth: Debug: passwd-file /etc/dovecot/passwd.masterusers: Read 1 users Aug 28 10:30:02 centosVM dovecot: auth: Debug: auth client connected (pid=4693) Aug 28 10:30:27 centosVM dovecot: auth: Debug: client in: AUTH#0111#011PLAIN#011service=imap#011lip=10.0.2.15#011rip=10.0.2.2#011lport=143#011rport=59847#011resp=<hidden> Aug 28 10:30:27 centosVM dovecot: auth: Debug: auth(masteruser,10.0.2.2,master): Master user lookup for login: mailadm Aug 28 10:30:27 centosVM dovecot: auth: Debug: passwd-file(masteruser,10.0.2.2,master): lookup: user=masteruser file=/etc/dovecot/passwd.masterusers Aug 28 10:30:27 centosVM dovecot: auth: passwd-file(masteruser,10.0.2.2,master): unknown user Aug 28 10:30:29 centosVM dovecot: auth: Debug: client out: FAIL#0111#011user=masteruser What can be happening? Thanks, Clóvis -- Clovis Tristao - UNICAMP/Faculdade de Engenharia Agricola Administrador de Redes - Secao de Informatica (SINFO) E-mail: clovis(a)feagri.unicamp.br http://www.feagri.unicamp.br MSN: clovis_tristao33(a)hotmail.com Fone: 55(19) 35211031-35211038-35211047-91173116

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POP/IMAP HA solution for 5k users
by Sinergizmas Sin ergizmas 28 Aug '14

28 Aug '14

Hello, I want to build simple, cheap HA solution for 5000 users with postfix/dovecot. Each user will have 1.3 GB mailbox (maildir) storage quota. All of the users will use POP and also plus half of them will use IMAP from smart phones. Sometimes they will hit webmail (squirrelmail). I plan that every user will send 20 and receive 20 mails per day. I have 3 locations, but electricity are not very stable there. We have outages for couple of hours 3-4 times per year. So I plan distribute all servers (it's more like good PC's) across locations. I'm very tied on budget also. Or maybe I could say I don't have it and I'm forced to use hardware equipment which is given. We are talking about quite pour HA solution here. Don't judge me please. I start to plan architecture and I would be very thankful for all your thoughts. I'm not expert in this area, but I need to learn, fire up email system and manage it. I will have SMTP server (smtp.example.com) which will filter mail with Clam, Spamassasin, Greylisting and forward emails to IMAP/ POP3/webmail server (mail.example.com) Mail.example.com will sync all user and mail changes to the third server mail2.example.com. Mail2.example.com server is just stand by, hot backup server in cases if main mail server or smtp will not be reachable. Locations of servers are in different cities: Locations #1 - SMTP servers as virtual machines (vmware server or virtualbox), with CPU i3, 6GB RAM, SSD, Centos 6, Virtualmin Location #2 - Dovecot/webmail server: CPU i5, 16GB RAM, HDD 1SSD for OS/dovecot indexes and SATA 2TBx4 LVM (total 8TB) for Maildir's, Centos 6, Virtualmin Location #3 HOT BACKUP (always online) server in case of mail.example.com or smtp.example.com failure, electricity outage and etc. It contains Dovecot/webmail server: CPU i3, 8GB RAM, HDD 1SSD for OS/dovecot indexes and SATA 2x4TB LVM (total 8TB), Centos 6, Virtualmin DNS configuration (and location number): IN MX 10 smpt.example.com. (#1) IN MX 20 mail.example.com. (#2) IN MX 30 mail2.example.com. (#3) .... smtp IN A aa.aa.aa.aa mail IN A bb.bb.bb.bb mail2 IN A cc.cc.cc.cc So I need to solve SMTP, POP, IMAP high availability tasks. SMTP I think will be ok for external users. SMTP feature has all three servers. If smtp.example.com server is offline mail is sent to mail.example.com If mail.example.com is offline, then mail is sent to mail2.example.com If mail2.example.com is offline, the senders SMTP server will hold an email in a queue by default for 3 days (in most cases) and will try to deliver in some intervals. Local (users of domain example.com) SMTP/POP/IMAP users will have problems, because their domain server will be dead. This means that connections from user MTA agents (outlook POP) could not be delivered because DNS A type record pointing to a degraded server. When problem with server mail.example.com (POP/IMAP/webmail) connectivity will happen, I think to login to DNS server and point record (A type) to a working server. So if server in location #2 mail.example.com is dead, I will change mail IN A bb.bb.bb.bb ----> cc.cc.cc.cc The same with the server smtp.example.com. If it's down, I will change mail IN A aa.aa.aa.aa ----> cc.cc.cc.cc I know that this method is not perfect because of ISP DNS caching around the globe, but this the only option I have. Most of my users use ISP that refresh DNS in a period of 30 minutes so it won't be very terrible to half of hour to wait for the connection. My questions: 1. Is this infrastructure is ok for 5000 users? If you think it's not, please write how many users it will serve "normally"? Or maybe I it could handle and 10 000 users load? 2. Is the logic of all setup is right in such situation like mine? What other problems could arise? 3. I prefer to create users from one server. So the LDAP option is the best for me? In case of LDAP it will be on server #2 and I need to replicate it to #3. Is it rigth? Then server #2 will be offline does #3 LDAP will take place? Or should I better use batch command to create user in each server per single command? Actually I do not want to manage and LDAP as extra service. I don't have experience with it. 4. The main problem is to synchronize maildir of POP/IMAP/webmail servers. Because of distance I do not want to use DRBD. It's not suitable for WAN connections. GlusterFS seems an option but.. I saw on internet users also having problems with it performance. Sometimes gluster hang and all cluster must be restarted. Maybe I can sync /home with gluster where maildir resides, but we need to take care of dovecot index and control files synchronization also. The performance of retrieving index'es by several thousands users every 2-5 minutes must be excellent. The only option I found is Dovecot Dsync (or newer Doveadm) command. I made initial tests on two servers, but only to get work with SSH command. The method using TCP connection doesn't work for me. So question, if I use SSH method in several thousand user system does it cause me trouble? SSH adds some overhead comparing to TCP. But could make a permament tunnel and TCP also would be quite secure. So please tell me what methods are you using to sync two mail servers (especially for POP accounts) in different locations? 5. File system. Is it ok to use EXT4 file system? I know that XFS is better in performance working with small files (maildir = a lot of small files), but in power outage it can become corrupted without journal. Thanks.

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