September 2012 - dovecot

[Dovecot] Can`t get over 1024 processes
by Tomáš Randa 17 Sep '12

17 Sep '12

Hello, I have configuration question. Running FreeBSD 9.0 / AMD64 / Dovecot 2.1.8 version and cannot get over 1024 processes. I`ve increased process_limit in imap and pop3 and still have messages in syslog like: maxproc limit exceeded by uid 89, please see tuning(7) and login.conf(5). Did I forget to increase some other value? System values are higher - kern.maxprocperuid: 8192 and kern.maxproc: 12288 I`d like to have more secure configuration > one process to one connection. Thanks for help. Tomas My config: # OS: FreeBSD 9.0-STABLE amd64 auth_mechanisms = plain login digest-md5 cram-md5 default_client_limit = 6200 default_process_limit = 4096 disable_plaintext_auth = no first_valid_gid = 89 first_valid_uid = 89 info_log_path = /var/log/dovecot-info.log last_valid_gid = 89 last_valid_uid = 89 listen = * log_timestamp = "%Y-%m-%d %H:%M:%S " login_greeting = Mail Toaster (Dovecot) ready. mail_location = maildir:~/Maildir mail_privileged_group = mail maildir_broken_filename_sizes = yes passdb { driver = vpopmail } plugin { quota = maildir quota_rule = Trash:ignore } protocols = imap pop3 service auth { unix_listener auth-client { mode = 0660 } unix_listener auth-master { mode = 0600 } } service imap-login { process_limit = 1536 service_count = 1 } service imap { process_limit = 2048 } service pop3-login { service_count = 1 } service pop3 { process_limit = 2048 } shutdown_clients = no ssl_cert = </var/qmail/control/servercert.pem ssl_key = </var/qmail/control/servercert.pem userdb { args = blocking=yes driver = passwd } userdb { driver = vpopmail } verbose_proctitle = yes protocol imap { imap_client_workarounds = delay-newmail tb-extra-mailbox-sep mail_max_userip_connections = 1024 mail_plugins = quota imap_quota } protocol lda { mail_plugins = quota imap_quota sendmail_path = /var/qmail/bin/sendmail } -- Tomáš Randa, Blueboard.cz s.r.o. ---------------------------------- http://hosting.blueboard.cz GSM: +420 775 086 575 Jabber: tomas(a)blueboard.cz Tel: +420 245 008 678 -- Tomáš Randa, Blueboard.cz s.r.o. ---------------------------------- http://hosting.blueboard.cz GSM: +420 775 086 575 Jabber: tomas(a)blueboard.cz Tel: +420 245 008 678

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[Dovecot] clucene build warnings?
by Charles Marcus 17 Sep '12

17 Sep '12

Hi all/Timo, Is clucene still the best/recommended method for enabling full text search? Although I haven't enabled FTS yet, I plan on doing sometime in the future, and was going to be using clucene, but before I do, I'd like to see if I need to worry about an issue I've been seeing ever since I first installed clucene (and still get every time it is upgraded)... I run gentoo linux on an amd64 server, and have always gotten this warning whenever it is updated (and also got it when I first installed it): QA Notice: Package triggers severe warnings which indicate that it may exhibit random runtime failures. /var/tmp/portage/dev-cpp/clucene-2.3.3.4-r4/work/clucene-core-2.3.3.4/src/core/CLucene/index/DocumentsWriter.cpp:129:33: warning: passing NULL to non-pointer argument 2 of ‘void* memset(void*, int, size_t)’ Please do not file a Gentoo bug and instead report the above QA issues directly to the upstream developers of this software. Homepage:http://clucene.sourceforge.net/ Has anyone else ever seen similar warnings when building clucene? Is the gentoo ebuild output correct that this is not a gentoo bug, but is in fact a problem with upstream? If so, is it harmless? Or should I try to get upstream to fix it? That said, being that ianap, I probably wouldn't be much help to them, so, Timo, any chance you can see if this is a problem that needs to be addressed with them? Thanks, -- Best regards, Charles

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[Dovecot] Mailbox directory permissions (LDA, 0600 -> 0660, virtual users)
by Marcin Hłybin 17 Sep '12

17 Sep '12

Hello, I have a quite common dovecot configuration with virtual users support: 1. User configuration is stored in MySQL database. 2. Mailboxes are owned by vmail:vmail with permission 0600 or drwx------. Is it possible to change mailbox mode to 0660? Dovecot version is 2.1.7 Part of SQL configuration: user_query = \ SELECT \ CONCAT_WS('/', home, u.uid, d.domain_name, u.user_name) AS home, \ 500 AS uid, \ 500 AS gid \ FROM users u \ LEFT JOIN domains d ON u.domain_id = d.id \ WHERE \ u.user_name = '%n' AND \ d.domain_name = '%d' AND \ u.active = 1 Regards. -- M.

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[Dovecot] doveadm backup - Fatal: All your namespaces have a location setting.
by Tobias Hachmer 17 Sep '12

17 Sep '12

Hello list, I am using dovecot v2.1.9 and have a problem with doveadm backup: # doveadm backup -u user(a)domain.com maildir:/backup/domain.com/user/Maildir doveadm(user(a)domain.com): Fatal: All your namespaces have a location setting. It should be empty (default mail_location) in the namespace to be converted. Here my namespace config: namespace { list = children location = maildir:/var/vmail/%%d/%%n/Maildir:INDEX=/var/vmail/%d/%n/shared/%%u prefix = Gemeinsame-Postfaecher/%%u/ separator = / subscriptions = no type = shared } namespace inbox { inbox = yes location = maildir:/var/vmail/%d/%n/Maildir:INDEX=/var/vmail/indexes/%u prefix = separator = / subscriptions = yes type = private } Have I got a problem with my namespace config? Regards, Tobias Hachmer

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[Dovecot] RFC 6154: German umlauts in special_use folder names
by Daniel Parthey 17 Sep '12

17 Sep '12

Hi, the Drafts special folder is called "Entwürfe" in German locale. How should the special_use entry in the config file look like? Would you recommended to use the encoded folder name... mailbox "Entw&APw-rfe" { special_use = \Drafts } ...or rather the utf-8 Encoding in the dovecot config file? mailbox "Entwürfe" { special_use = \Drafts } Regards Daniel -- https://plus.google.com/103021802792276734820

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[Dovecot] Strip backslash from usernames
by Dominic Malolepszy 17 Sep '12

17 Sep '12

Hi, Is there a way to strip a backslash if it exists at the start of username like \user(a)example.com within the Dovecot LDA? I am using Dovecot 2.1.9 with a LDAP backend, so I cannot do any sort of SQL trickery. Dominic.

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[Dovecot] Edit an existing message or replacing it
by Mostafa Rokooie 16 Sep '12

16 Sep '12

Hi, I want to know is there any solution to edit an existing message in mailbox via IMAP? or replace it with a new message (store a new message with same UID)? Thank you very much, --Mostafa Rokooie

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[Dovecot] Error: User doesn't have home dir set, disabling duplicate database
by Carsten Laun-De Lellis 16 Sep '12

16 Sep '12

Hi all I receive the following error in my mail.log. Does anybody know how to configure dovecot to get rid of this ? I have one server up and running with postfix, dovecot and a mysql backend. The error above happens on another server with postfix, dovecot and a ldap backend. Any hints ? Mit freundlichem Gruß Carsten Laun-De Lellis Dipl.-Ing. Elektrotechnik Certified Information Systems Auditor (CISA) Hauptstrasse 13 D-67705 Trippstadt Phone: +49 (6306) 992140 Mobile: +49 (151) 27530865 Fax: +49 (6306) 992142 email: <mailto:carsten.delellis@delellis.net> carsten.delellis(a)delellis.net

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[Dovecot] POP3S PORT
by Robert JR 14 Sep '12

14 Sep '12

Hello I am using dovecot with POP3S and IMAPS ports, When client connect to POP3S port (995) , i can see in dovecot log file that the protocol is TLSv1 So how come the protocol is TLSv1 and not SSL ? Does the user connect t port 995 with SSL protocol then encrypt again inside the SSL session to make The TLSv1 protocol ? Or does the client use TLSv1 Protocol immediately when connect to port 995 without Using SSL protocol ? Please Help. Robert JR

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[Dovecot] sieve_execute_bytecode failed with squirrelmail
by Gregory Charot (EVENIUM) 14 Sep '12

14 Sep '12

Hello all, I'm using dovecot on CentOS 5.8 (official CentOS package) and have lot of lock and "sieve_execute_bytecode error" in my dovecot.log. $ cat /etc/redhat-release CentOS release 5.8 (Final) $ dovecot --version 1.0.13 The sieve scripts are generated by squirrelmail mail and are mostly mail filters and vacations notices. $ yum info squirrelmail.noarch Installed Packages Name : squirrelmail Arch : noarch Version : 1.4.8 Release : 5.el5.centos.13 When I look at my dovecot.log I have a lot of sieve error : deliver(foo): Sep 11 15:08:04 Info: msgid=<1881992580.96697.1347363282479.JavaMail.jboss(a)gula1.xxx.com>: save failed to EvSUPPORT: Timeout while wait ing for lock deliver(foo): Sep 11 15:08:04 Info: sieve runtime error: Fileinto: Generic Error deliver(foo): Sep 11 15:08:04 Error: sieve_execute_bytecode(/home/foo/.dovecot.sievec) failed The server hosts around 50 mailboxes, some people does have sieve errors some doesn't. Is there any way to get more details about the runtime error ? How can I debug this issue ? Thanks a lot in advance, Greg My config below : #dovecot -n # 1.0.13: /etc/dovecot.conf log_path: /var/log/dovecot.log ssl_ca_file: /etc/pki/roch_crt/roch_evenium_com.ca-bundle ssl_cert_file: /etc/pki/roch_crt/roch_evenium_com.crt ssl_key_file: /etc/pki/roch_crt/private/roch-private.key ssl_cipher_list: ALL:!aNULL:!ADH:!eNULL:!LOW:!EXP:!SSLv2:RC4+RSA:+HIGH:+MEDIUM:+SSLv3 login_dir: /var/run/dovecot/login login_executable(default): /usr/libexec/dovecot/imap-login login_executable(imap): /usr/libexec/dovecot/imap-login login_executable(pop3): /usr/libexec/dovecot/pop3-login login_process_per_connection: no login_process_size: 256 login_processes_count: 10 login_max_connections: 32 mail_privileged_group: mail dotlock_use_excl: yes fsync_disable: yes maildir_copy_with_hardlinks: yes mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_plugin_dir(default): /usr/lib64/dovecot/imap mail_plugin_dir(imap): /usr/lib64/dovecot/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3 pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls,oe-ns-eoh auth default: passdb: driver: pam userdb: driver: passwd socket: type: listen client: path: /var/run/dovecot/auth-client mode: 438 user: postfix group: postfix master: path: /var/run/dovecot/auth-master mode: 384

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