March 2012 - dovecot - dovecot.org

[Dovecot] How do I test if the anti spam plugin is working?
by Dr Josef Karthauser 13 Apr '12

13 Apr '12

I've configured the dspam anti spam plugin, but it doesn't appear to be doing anything when I move mail between mailboxes. Can anyone help me determine what's going on? The plugin appears to be loading; at least if I don't define all the required configuration options I get a complaint in the log file. But beyond that I don't see any activity. Here's the config: babel# dovecot --version 2.1.3 The dovecot anti spam plugin config is: protocol imap { mail_plugins = $mail_plugins antispam } and plugin { antispam_debug_target = syslog antispam_verbose_debug = 1 antispam_backend = dspam antispam_signature = X-DSPAM-Signature antispam_signature_missing = error antispam_trash_pattern_ignorecase = trash;Deleted * antispam_spam_pattern = SPAM antispam_dspam_binary = /usr/local/bin/dspam antispam_dspam_args = --deliver=;--user;%n@_%d } I don't even appear to be seeing any log entries from the plugin. I've moving an email from my main mailbox into a mailbox called 'SPAM', which is how I thought that it was supposed to be triggered. Cheers, Joe

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[Dovecot] Folder Aliases - Revisited Yet Again
by Daniel L. Miller 11 Apr '12

11 Apr '12

I just did a search through my archives - seems this topic has been requested a few times since my posting two years ago. I asked about a specific implementation - which Mr. Sirainen never commented on. He was probably focused on something more important at the time - like a paying job. So I'll ask again... Calling Timo! If we can't get clients to agree on a "standard" set of folders (probably reasonably safe assumption) and if protocol implementations of variations of "*LIST*" are too far in the future...what about having alternative folder names presented based on login name - maybe by an extension? So where my usual login might be "user(a)domain.com", and that would continue to be supported as the default login, I could now have "user(a)domain.com+thunderbird", "user(a)domain.com+mobile", etc.? And each of those extensions would then have a system-wide map defining folder name relationships, like "Sent=Sent Items". Does this seem doable? -- Daniel

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[Dovecot] distributed mdbox
by James Devine 09 Apr '12

09 Apr '12

Anyone know how to setup dovecot with mdbox so that it can be used through shared storage from multiple hosts? I've setup a gluster volume and am sharing it between 2 test clients. I'm using postfix/dovecot LDA for delivery and I'm using postal to send mail between 40 users. In doing this, I'm seeing these errors in the logs Mar 21 09:36:29 test-gluster-client2 dovecot: lda(testuser34): Error: Fixed index file /mnt/testuser34/mdbox/storage/dovecot.map.index: messages_count 272 -> 271 Mar 21 09:36:30 test-gluster-client2 dovecot: lda(testuser28): Error: Log synchronization error at seq=4,offset=3768 for /mnt/testuser28/mdbox/storage/dovecot.map.index: Append with UID 516, but next_uid = 517 Mar 21 09:36:30 test-gluster-client2 dovecot: lda(testuser28): Error: Log synchronization error at seq=4,offset=4220 for /mnt/testuser28/mdbox/storage/dovecot.map.index: Extension record update for invalid uid=517 Mar 21 09:36:30 test-gluster-client2 dovecot: lda(testuser28): Error: Log synchronization error at seq=4,offset=5088 for /mnt/testuser28/mdbox/storage/dovecot.map.index: Extension record update for invalid uid=517 Mar 21 09:36:30 test-gluster-client2 dovecot: lda(testuser28): Warning: fscking index file /mnt/testuser28/mdbox/storage/dovecot.map.index Mar 21 09:36:30 test-gluster-client2 dovecot: lda(testuser34): Warning: fscking index file /mnt/testuser34/mdbox/storage/dovecot.map.index This is my dovecot config currently: jdevine@test-gluster-client2:~> dovecot -n # 2.0.13: /etc/dovecot/dovecot.conf # OS: Linux 3.0.0-13-server x86_64 Ubuntu 11.10 lock_method = dotlock mail_fsync = always mail_location = mdbox:~/mdbox mail_nfs_index = yes mail_nfs_storage = yes mmap_disable = yes passdb { driver = pam } protocols = " imap" ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd }

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[Dovecot] Dovecot allows creation of folders outside of a user's directory
by Christoph Bußenius 05 Apr '12

05 Apr '12

Hi, in our dovecot 2.0 setup with shared folders, users can make dovecot create directories outside their mail directory. Which is a bit scary imho. The following command: . create inbox.shared.abc123 or even . create "inbox.shared.strange &ANY- characters" -- even though it will fail with a "permission denied" error -- will create a directory like "/mail/users/strange &ANY- characters". That directory will only contain a subdirectory "Maildir" and therein dovecot-acl-list. I think basically the reason for this behaviour is that Dovecot checks whether the directory has enough ACLs for the user to access it, and auto-creates the directory in the process. Is there way to avoid this auto-creation - or maybe a way to make Dovecot check whether the directory name is an existing username? Here's a config to reproduce this: # 2.0.19: /usr/local/dovecot/etc/dovecot/dovecot.conf # OS: Linux 2.6.32-35-server x86_64 Ubuntu 10.04.4 LTS auth_username_format = %Ln disable_plaintext_auth = no mail_gid = vmail mail_home = /mail/users/%u mail_location = maildir:~/Maildir mail_plugins = " acl" mail_uid = vmail maildir_very_dirty_syncs = yes namespace default { inbox = yes location = prefix = INBOX. separator = . type = private } namespace sharedns { inbox = no list = children location = maildir:/mail/users/%%u/Maildir prefix = INBOX.shared.%%u. separator = . subscriptions = no type = shared } passdb { args = /usr/local/dovecot/etc/dovecot/users driver = passwd-file } plugin { acl = vfile:/usr/local/dovecot/etc/dovecot/global-acls:cache_secs=300 acl_shared_dict = file:/mail/vmail/shared-mailboxes.db } service auth { unix_listener auth-userdb { group = vmail mode = 0660 } } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem syslog_facility = local6 userdb { args = /usr/local/dovecot/etc/dovecot/users driver = passwd-file } protocol lmtp { mail_plugins = " sieve" } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep mail_plugins = " acl imap_acl" } Content of the "users" file looks like this: user1:{plain}(hidden):::user1:/mail/users/user1:: user2:{plain}(hidden):::user2:/mail/users/user2:: testuser:{plain}(hidden):::testuser:/mail/users/testuser:: Cheers, Christoph -- Christoph Bußenius Rechnerbetriebsgruppe der Fakultäten Informatik und Mathematik Technische Universität München +49 89-289-18519 <> Raum 00.05.055 <> Boltzmannstr. 3 <> Garching

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[Dovecot] Dovecot upgrade from 1.2.x to 2.0.x: roundcube/squirrelmail sent folder doesn't work any more
by Gerhard Wiesinger 05 Apr '12

05 Apr '12

Hello, After upgrading from 1.2.x to 2.0.x I'm having problems using sent folder in Webmail applications like roundcube mail and squirrelmail. Relevant config dovecot.conf: mail_location = mbox:~:INBOX=/var/mail/%u Different LIST behaviour from rawlog: 1.2.x: with Prefix ~/Mail A002 LIST "" "~/Mail/sent" * LIST (\NoInferiors \UnMarked) "/" "~/Mail/sent" A002 OK List completed. 2.0.x: with Prefix ~/Mail A0003 LIST "" ~/Mail/sent A0003 OK List completed.: Configured prefix for private spaces in roundcube mail is ~/Mail . Roundcube Webmail application checks for existence of the folder but dovecot doesn't return anything in 2.x.latest. Is this by design? Any ideas to fix it by configuration? (I tried prefix Mail/ in roundcube mail without success) Thunderbird works well. Thnx. Ciao, Gerhard

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[Dovecot] doveadm user -f index
by Micah Anderson 04 Apr '12

04 Apr '12

I've configured my mail_location to have a different location for performance reasons so they aren't in the same location as the mail_location. The 'doveadm user -f home' is useful to find where a user's home directory is for various scripting purposes, but I can't seem to find a way to determine the location of the user's indexes. I can do something with the output of dovecot -a to find the mail_location and then look for a configured INDEX, but then I don't have a good way of translating the %d/%1n/%n type string formatters into their values for a user. thanks for any suggestions! micah --

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[Dovecot] Dovecot and scalable database storage
by list＠airstreamcomm.net 04 Apr '12

04 Apr '12

I saw some interesting mails from TImo back in 2009 talking about the idea of using something like Cassandra db or similar as a storage platform for both email and index/logs. I was wondering if this has been discussed since then, and if there are any plans to support something like this in the future? I have been playing with Cassandra and found that their RackAwareStrategy gives you the ability to replicate writes to as many nodes as you would like, but more importantly what nodes and one of those nodes could be defined by what rack it lives in or what data center it lives in. This means multiple sites high available storage clusters, seemingly a system that dovecot could benefit from in terms of performance and redundancy and simplicity. Any takers?

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[Dovecot] ldap userdb warning in v2.1.1
by Nikolaos Milas 04 Apr '12

04 Apr '12

Hi, I've upgraded from 2.0.13 to 2.1.1 and when I started the service, I got the following warning: Mar 21 10:07:23 imapserver dovecot: master: Dovecot v2.1.1 starting up (core dumps disabled) Mar 21 10:08:17 imapserverdovecot: auth: Warning: ldap: Ignoring changed user_attrs in /etc/dovecot/dovecot-passdb-ldap.conf, because userdb ldap not used. (If this is intentional, set userdb_warning_disable=yes) I didn't see such warnings in 2.0.13. I guess I should/could remove the "user_attrs" line from dovecot-passdb-ldap.conf because it's not needed? (I could also set "userdb_warning_disable=yes" as advised, but I'm trying to figure out what's the real cause of the warning.) The config follows below. Thanks, Nick ============================================================= protocols = imap pop3 mail_location = maildir:~/Maildir/ mail_gid = 502 mail_uid = 502 auth_mechanisms = plain login auth_username_format = %Lu auth_verbose = yes disable_plaintext_auth = no mail_plugins = quota protocol imap { imap_client_workarounds = "delay-newmail " mail_plugins = quota imap_quota } protocol pop3 { mail_max_userip_connections = 3 mail_plugins = quota pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv } protocol lda { auth_socket_path = /var/run/dovecot/auth-master info_log_path = log_path = mail_plugins = quota postmaster_address = sysadmin(a)example.com sendmail_path = /usr/lib/sendmail } userdb { args = /etc/dovecot/dovecot-usrdb-ldap.conf driver = ldap } passdb { args = /etc/dovecot/dovecot-passdb-ldap.conf driver = ldap } plugin { quota = maildir:User quota quota_rule = *:storage=4G quota_rule2 = Trash:storage=+3%% quota_warning = storage=75%% quota-warning 75 %u quota_warning2 = storage=90%% quota-warning 90 %u } service quota-warning { executable = script /opt/mail1.sh user = vmail unix_listener quota-warning { 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 } user = root } service imap-login { service_count = 1 vsz_limit = 64 M } service pop3-login { service_count = 1 vsz_limit = 64 M } ssl_ca = </etc/pki/tls/certs/chain-650.pem ssl_cert = </etc/pki/tls/certs/cert-650.pem ssl_key = </etc/pki/tls/private/key-650.pem syslog_facility = local1 ============================================================= and dovecot-usrdb-ldap.conf is identical to dovecot-passdb-ldap.conf: ============================================================= hosts = localhost tls = no base = ou=people, dc=example, dc=com scope = onelevel ldap_version = 3 dn = uid=authenticate,ou=System,dc=example,dc=com dnpass = secret auth_bind = yes user_filter = (uid=%u) pass_filter = (uid=%u) pass_attrs = uid=user,userPassword=password auth_bind_userdn = uid=%u,ou=people,dc=example,dc=com user_attrs = roomNumber=quota_rule=*:bytes=%$,uid=home=/home/vmail/%u iterate_filter = (objectClass=*) =============================================================

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[Dovecot] dovecot 2.0.19 Panic: file mail-index-sync-ext.c: line 209 (sync_ext_reorder): assertion failed: (offset < (uint16_t)-1)
by Jim Lawson 04 Apr '12

04 Apr '12

Had a user who couldn't access his INBOX: > Mar 21 09:21:17 penguina dovecot: imap([USER]): Panic: file > mail-index-sync-ext.c: line 209 (sync_ext_reorder): assertion fai > led: (offset < (uint16_t)-1) > Mar 21 09:21:17 penguina dovecot: imap([USER]): Error: Raw backtrace: > /usr/lib/dovecot/libdovecot.so.0 [0x342683c660] -> /usr > /lib/dovecot/libdovecot.so.0 [0x342683c6b6] -> > /usr/lib/dovecot/libdovecot.so.0 [0x342683bb73] -> > /usr/lib/dovecot/libdovecot > -storage.so.0 [0x3426c966a8] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_sync_ext_intro+0x240) > [0x3426c979c0] -> / > usr/lib/dovecot/libdovecot-storage.so.0(mail_index_sync_record+0x401) > [0x3426c99151] -> /usr/lib/dovecot/libdovecot-storage.s > o.0(mail_index_sync_map+0x245) [0x3426c99c55] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_map+0x71b) > [0x3426c8afbb > ] -> /usr/lib/dovecot/libdovecot-storage.so.0 [0x3426c85d8b] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_open+0x1c > e) [0x3426c8617e] -> > /usr/lib/dovecot/libdovecot-storage.so.0(index_storage_mailbox_open+0xb5) > [0x3426c4d865] -> /usr/lib/dov > ecot/libdovecot-storage.so.0 [0x3426c75eab] -> > /usr/lib/dovecot/libdovecot-storage.so.0 [0x3426c31006] -> > dovecot/imap [hdtod > d 10.245.30.58 SELECT](cmd_ Stack trace made it look like it was the INBOX, so I deleted the index files for his INBOX and everything was OK. doveconf -n: > # OS: Linux 2.6.18-274.18.1.el5 x86_64 Red Hat Enterprise Linux Server > release 5.8 (Tikanga) > auth_gssapi_hostname = penguina.uvm.edu > auth_krb5_keytab = /etc/krb5.keytab.dovecot > auth_master_user_separator = * > auth_mechanisms = plain login gssapi > base_dir = /var/run/dovecot/ > default_process_limit = 250 > first_valid_uid = 50 > lock_method = flock > login_trusted_networks = [REDACTED] > mail_location = mbox:~/mail:INBOX=/var/spool/mail/%1u/%1.1u/%u > mail_max_lock_timeout = 30 secs > mail_max_userip_connections = 100 > mbox_read_locks = flock > mbox_write_locks = flock > mmap_disable = yes > namespace { > inbox = yes > location = > prefix = > separator = / > type = private > } > namespace { > hidden = yes > list = no > location = > prefix = mail/ > separator = / > type = private > } > namespace { > hidden = yes > list = no > location = > prefix = ~/mail/ > separator = / > type = private > } > namespace { > hidden = yes > list = no > location = > prefix = ~%u/mail/ > separator = / > type = private > } > passdb { > args = /etc/dovecot/passwd.masterusers > driver = passwd-file > master = yes > } > passdb { > driver = pam > } > service imap { > process_limit = 4096 > } > service lmtp { > client_limit = 1 > inet_listener lmtp { > port = 24 > } > } > ssl_cert = <[REDACTED] > ssl_key = < [REDACTED] > userdb { > driver = passwd > } > verbose_proctitle = yes Any questions/suggestions welcome. Jim

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[Dovecot] dovecot-auth restaring and caching
by Angel L. Mateo 04 Apr '12

04 Apr '12

Hello, I'm trying to configure dovecot (2.0.13) to cache user and pass dbs. This a mail server whose purpose is only to deliver messages through dovecot lda. My users are in a ldap server. So I have configure auth_cache_size (with 20MB) and auth_cache_ttl (with 1 day). I have checked that caching is being done, and it is. If a send a message to a user, dovecot looks for it in my ldap server. If then I send another, then it uses cache information. The problem I'm having is that if I have no activity in the server, dovecot stops its auth process and when another message is received, it restarted it, but with an empty cache. This is the auth log for the first message: Mar 22 10:29:41 lynx10 dovecot: auth: Debug: Loading modules from directory: /usr/lib/dovecot/modules/auth Mar 22 10:29:41 lynx10 dovecot: auth: Debug: Module loaded: /usr/lib/dovecot/modules/auth/libauthdb_ldap.so Mar 22 10:29:41 lynx10 dovecot: auth: Debug: master in: USER#0111#011amateo#011service=lda Mar 22 10:29:41 lynx10 dovecot: auth: Debug: prefetch(amateo): passdb didn't return userdb entries, trying the next userdb Mar 22 10:29:41 lynx10 dovecot: auth: Debug: userdb-cache(amateo): miss Mar 22 10:29:41 lynx10 dovecot: auth: Debug: ldap(amateo): user search: <search base and filter> fields=irisMailbox,homeDirectory,uidNumber,gidNumber Mar 22 10:29:41 lynx10 dovecot: auth: Debug: ldap(amateo): result: uidNumber(uid)=XXXXX gidNumber(gid)=XXX homeDirectory(home)=XXXXXXXXXX Mar 22 10:29:41 lynx10 dovecot: auth: Debug: master out: USER#0111#011amateo#011uid=XXXXXX#011gid=XXX#011home=XXXXXXXXXXXX And this is the second one, just after a few minutes: Mar 22 10:41:03 lynx10 dovecot: auth: Debug: Loading modules from directory: /usr/lib/dovecot/modules/auth Mar 22 10:41:03 lynx10 dovecot: auth: Debug: Module loaded: /usr/lib/dovecot/modules/auth/libauthdb_ldap.so Mar 22 10:41:03 lynx10 dovecot: auth: Debug: master in: USER#0111#011amateo#011service=lda Mar 22 10:41:03 lynx10 dovecot: auth: Debug: prefetch(amateo): passdb didn't return userdb entries, trying the next userdb Mar 22 10:41:03 lynx10 dovecot: auth: Debug: userdb-cache(amateo): miss Mar 22 10:41:03 lynx10 dovecot: auth: Debug: ldap(amateo): user search: <search base and filter> fields=irisMailbox,homeDirectory,uidNumber,gidNumber Mar 22 10:41:03 lynx10 dovecot: auth: Debug: ldap(amateo): result: uidNumber(uid)=XXXXX gidNumber(gid)=XXX homeDirectory(home)=XXXXXXXXXXX Mar 22 10:41:03 lynx10 dovecot: auth: Debug: master out: USER#0111#011amateo#011uid=XXXXX#011gid=XXX#011home=XXXXXXXXXX This is my configuration: root@lynx10:/etc/dovecot/conf.d# doveconf -n # 2.0.13: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-4-amd64 x86_64 Ubuntu 10.04.4 LTS auth_cache_size = 20 M auth_cache_ttl = 1 days auth_debug = yes auth_verbose = yes hostname = lynx10 passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_extensions = +imapflags sieve_max_redirects = 15 } postmaster_address = postmaster(a)um.es protocols = " imap lmtp pop3" service auth { unix_listener auth-userdb { mode = 0666 } } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } protocol lmtp { mail_plugins = " sieve" } protocol lda { mail_plugins = " sieve" } Any idea? -- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de la Información _o) y las Comunicaciones Aplicadas (ATICA) / \\ http://www.um.es/atica _(___V Tfo: 868887590 Fax: 868888337

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