- dovecot - dovecot.org

[Dovecot] Investigating suspected cache corruption
by David Warden 14 Oct '09

14 Oct '09

Hi All, I'm running Dovecot 1.1.11 for a site of about 7000 active users with a Squirrelmail frontend. We migrated from Courier (big shout to everyone who worked on the wonderful part of the Dovecot wiki that deals with Courier migration) and I have been extremely happy with the performance gains Dovecot has given us. Not only is the IMAP part of Squirrelmail faster, but our same hardware is under far less stress than it was before the migration. To date, the only problem we have experienced is a seemingly random but significant slowdown in Squirrelmail's loading of the messages in a user's Inbox. Each time, I have been able to fix the problem by deleting the user's dovecot.index, dovecot.index.cache and dovecot.index.log files in the user's INDEX directory for their dovecot Inbox. I tried having users experiencing this problem log in to a test Squirrelmail box with mail_debug on, but I didn't see anything out of the ordinary and they report the same slowness on the test server. I don't see anything but normal login/logout IMAP lines in the production dovecot logs. I have hesitated a bit in posting to the list since this seems to be happening to a small percentage of users and it technically may be a problem with Squirrelmail, but the fact that I'm able to fix the problem by nuking Dovecot's index files has me concerned - does anyone have any suggestions for troubleshooting? My first idea when I get another one of these is to do a telnet IMAP session to Dovecot on one of the Squirrelmail boxes and see if I can get it to slow down when retrieving messages from the Inbox. We are using Maildir over NFS with the control/index files stored on NFS as well. We're doing FS quota over NFS using rquotad to query the NFS server for each user's quota. Here's the output of dovecot -n: # 1.1.11: /etc/dovecot.conf Warning: fd limit 1024 is lower than what Dovecot can use under full load (more than 1536). Either grow the limit or change login_max_processes_count and max_mail_processes settings # OS: Linux 2.6.18-128.1.1.0.1.el5 x86_64 Red Hat Enterprise Linux Server release 5.3 (Tikanga) 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_processes_count: 10 login_max_processes_count: 512 verbose_proctitle: yes first_valid_uid: 0 mail_location: maildir:~/Maildir:CONTROL=/Mail/mailhome/ %u/.dovecot:INDEX=/Mail/mailhome/%u/.dovecot mmap_disable: yes mail_nfs_storage: yes mail_nfs_index: yes mail_drop_priv_before_exec: yes mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(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 imap_client_workarounds(default): outlook-idle delay-newmail imap_client_workarounds(imap): outlook-idle delay-newmail imap_client_workarounds(pop3): imap_logout_format(default): bytes(in/out)=%i/%o imap_logout_format(imap): bytes(in/out)=%i/%o imap_logout_format(pop3): bytes=%i/%o pop3_uidl_format(default): %08Xu%08Xv pop3_uidl_format(imap): %08Xu%08Xv pop3_uidl_format(pop3): UID%u-%v pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh pop3_logout_format(default): top=%t/%p, retr=%r/%b, del=%d/%m, size=%s pop3_logout_format(imap): top=%t/%p, retr=%r/%b, del=%d/%m, size=%s pop3_logout_format(pop3): top(count/bytes)=%t/%p, retr(count/bytes)=%r/ %b, del(deleted/pre-deleted)=%d/%m, mailbox-size(bytes)=%s namespace: type: private prefix: INBOX. inbox: yes list: yes subscriptions: yes auth default: mechanisms: plain login passdb: driver: pam userdb: driver: passwd plugin: quota: fs:Mail Quota:user Many thanks, David Warden

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[Dovecot] dovecot + ldap
by bely junior 14 Oct '09

14 Oct '09

Hi, I have a configuration with dovecot authenticating to AD. I would like to authenticate using the user logon name in AD. and mail box were created according to the field mail in AD anyone have any idea about this? my dovecot-ldap: hosts = xx.xx.xx.xx base = dc=domain,dc=com ldap_version = 3 auth_bind = yes auth_bind_userdn = domain\%u thanks. -- Bely Silva Junior

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[Dovecot] dovecot + ldap
by bely junior 14 Oct '09

14 Oct '09

Hi, I have a configuration with dovecot authenticating to AD. I would like to authenticate using the user logon name in AD. and mail box were created according to the field mail in AD anyone have any idea about this? my dovecot-ldap: hosts = xx.xx.xx.xx base = dc=domain,dc=com ldap_version = 3 auth_bind = yes auth_bind_userdn = domain\%u thanks. -- Bely Silva Junior

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[Dovecot] quota error dovecot 1.1.13
by Brightblade 14 Oct '09

14 Oct '09

Hi all, I've troubles with dovecot and quota. Sometimes mails to users are bounced because quota is full. I'm reading quota_rules from LDAP. One "du -h ." from maildir show user is under quota ( at 70 % more or less), less than 99%, i delete maildirsize and dovecot recreate it with ldap-quota value at first line and second line is current-quota mails. Current-quota is near quota max value so dovecot execute quota_warning (99%). Why is dovecot thinking quota is at 99% when du -h show me its value is near 70% ? any guess? My conf: syslog_facility: local1 protocols: imap pop3 managesieve listen(default): * listen(imap): * listen(pop3): *:110 listen(managesieve): *:2000 ssl_disable: yes disable_plaintext_auth: no login_dir: /usr/local/dovecot//var/run/dovecot/login login_executable(default): /usr/local/dovecot/libexec/dovecot/imap-login login_executable(imap): /usr/local/dovecot/libexec/dovecot/imap-login login_executable(pop3): /usr/local/dovecot/libexec/dovecot/pop3-login login_executable(managesieve): /usr/local/dovecot/libexec/dovecot/managesieve-login login_process_per_connection: no login_process_size: 1200 login_processes_count: 20 login_max_processes_count: 2048 login_max_connections: 512 max_mail_processes: 4096 mail_max_userip_connections(default): 1000 mail_max_userip_connections(imap): 1000 mail_max_userip_connections(pop3): 10 mail_max_userip_connections(managesieve): 10 mail_location: maildir:%h/Maildir mmap_disable: yes dotlock_use_excl: no mail_nfs_storage: yes mail_nfs_index: yes mail_executable(default): /usr/local/dovecot/libexec/dovecot/imap mail_executable(imap): /usr/local/dovecot/libexec/dovecot/imap mail_executable(pop3): /usr/local/dovecot/libexec/dovecot/pop3 mail_executable(managesieve): /usr/local/dovecot/libexec/dovecot/managesieve mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): quota mail_plugins(managesieve): mail_plugin_dir(default): /usr/local/dovecot/lib/dovecot/imap mail_plugin_dir(imap): /usr/local/dovecot/lib/dovecot/imap mail_plugin_dir(pop3): /usr/local/dovecot/lib/dovecot/pop3 mail_plugin_dir(managesieve): /usr/local/dovecot//lib/dovecot/managesieve imap_client_workarounds(default): outlook-idle imap_client_workarounds(imap): outlook-idle imap_client_workarounds(pop3): imap_client_workarounds(managesieve): sieve(default): sieve(imap): sieve(pop3): sieve(managesieve): ~/.dovecot.sieve auth default: cache_size: 512000 cache_ttl: 1800 executable: /usr/local/dovecot/libexec/dovecot/dovecot-auth failure_delay: 5 debug: yes worker_max_count: 4096 worker_max_request_count: 4096 process_size: 4096 passdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf userdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf socket: type: listen master: path: /var/run/dovecot/auth-master mode: 511 plugin: sieve: %h/.dovecot.sieve quota_warning: storage=99%% /usr/local/bin/quota-full.sh %u quota_warning2: storage=95%% /usr/local/bin/quota-warning.sh 95 %u quota_warning3: storage=70%% /usr/local/bin/quota-warning.sh 70 %u quota: maildir thanks in advance, Regards.

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[Dovecot] [Off-Topic] Dovecot and Maildrop
by Darvin Denmian 14 Oct '09

14 Oct '09

Hello, I need to know : What is the best way to use Postfix (Virtual User on Mysql) + Dovecot + Maildrop ? Is there some documentation that you can indicate to me? Thanks !!

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[Dovecot] Some errors with sieve
by Proskurin Kirill 14 Oct '09

14 Oct '09

Hello all. I found some errors in logs like this: Oct 14 05:51:47 IMAP(chief(a)khb.fxclub.org): Error: stat(/var/spool/dovecot/domains/khb.fxclub.org/chief/.dovecot.sieve/tmp) failed: Not a directory Oct 14 06:17:01 IMAP(msa(a)fxclub.org): Error: stat(/var/spool/dovecot/domains/fxclub.org/msa/.dovecot.sieve/tmp) failed: Not a directory Oct 14 06:17:28 IMAP(stolchnev-vk(a)soft-expert.biz): Error: stat(/var/spool/dovecot/domains/soft-expert.biz/stolchnev-vk/.dovecot.sieve/tmp) failed: Not a directory Filter seems to work normal. Dovecot -n: # 1.2.4: /usr/local/etc/dovecot.conf # OS: FreeBSD 7.1-RELEASE-p7 i386 ufs base_dir: /var/run/dovecot/ log_path: /var/log/dovecot/dovecot.log info_log_path: /var/log/dovecot/dovecot-debug.log protocols: imap imaps pop3 pop3s managesieve listen(default): * listen(imap): * listen(pop3): * listen(managesieve): *:2000 ssl_ca_file: /usr/local/etc/certs/GlobalSignCA.crt ssl_cert_file: /usr/local/etc/certs/fxclub_org.crt ssl_key_file: /usr/local/etc/certs/fxclub_org.key ssl_cipher_list: ALL:!LOW:!SSLv2 login_dir: /var/run/dovecot/login login_executable(default): /usr/local/libexec/dovecot/imap-login login_executable(imap): /usr/local/libexec/dovecot/imap-login login_executable(pop3): /usr/local/libexec/dovecot/pop3-login login_executable(managesieve): /usr/local/libexec/dovecot/managesieve-login login_process_size: 128 login_processes_count: 20 login_max_processes_count: 512 mail_max_userip_connections(default): 256 mail_max_userip_connections(imap): 256 mail_max_userip_connections(pop3): 20 mail_max_userip_connections(managesieve): 10 verbose_proctitle: yes first_valid_gid: 0 mail_privileged_group: mail mail_uid: dmail mail_gid: dmail mail_location: maildir:/var/spool/dovecot/domains/%d/%n mail_debug: yes mail_executable(default): /usr/local/libexec/dovecot/imap mail_executable(imap): /usr/local/libexec/dovecot/imap mail_executable(pop3): /usr/local/libexec/dovecot/pop3 mail_executable(managesieve): /usr/local/libexec/dovecot/managesieve mail_process_size: 512 mail_plugins(default): quota imap_quota autocreate mail_log mail_plugins(imap): quota imap_quota autocreate mail_log mail_plugins(pop3): quota mail_plugins(managesieve): mail_plugin_dir(default): /usr/local/lib/dovecot/imap mail_plugin_dir(imap): /usr/local/lib/dovecot/imap mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3 mail_plugin_dir(managesieve): /usr/local/lib/dovecot/managesieve imap_client_workarounds(default): delay-newmail tb-extra-mailbox-sep imap_client_workarounds(imap): delay-newmail tb-extra-mailbox-sep imap_client_workarounds(pop3): imap_client_workarounds(managesieve): pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh pop3_client_workarounds(managesieve): lda: postmaster_address: postmaster(a)fxclub.org hostname: mail.fxclub.org mail_plugins: sieve quota mail_plugin_dir: /usr/local/lib/dovecot/lda quota_full_tempfail: yes deliver_log_format: msgid=%m: %$ %f %s log_path: /var/log/dovecot/deliver.log info_log_path: /var/log/dovecot/deliver.log sendmail_path: /usr/sbin/sendmail rejection_reason: Your message to <%t> was automatically rejected:%n%r auth_socket_path: /var/run/dovecot/auth-master auth default: mechanisms: plain login user: dovecot-auth username_format: %Lu worker_max_count: 100 passdb: driver: ldap args: /usr/local/etc/dovecot-ldap.conf userdb: driver: ldap args: /usr/local/etc/dovecot-ldap.conf socket: type: listen client: path: /var/run/dovecot/auth-client mode: 432 user: exim master: path: /var/run/dovecot/auth-master mode: 384 user: dmail plugin: quota: maildir quota_rule: *:storage=1024M quota_rule2: Trash:storage=1256M quota_rule3: SPAM:ignore quota_warning: storage=95%% /usr/local/bin/quota-warning.sh 95 quota_warning2: storage=80%% /usr/local/bin/quota-warning.sh 80 autocreate: Trash autocreate2: Sent autocreate3: Spam autosubscribe: Trash autosubscribe2: Sent autosubscribe3: Spam sieve_dir: ~/sieve sieve: ~/.dovecot.sieve sieve_global_path: /var/spool/dovecot/global.sieve mail_location: /var/spool/dovecot/domains/%d/%n/ mail_log_events: delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields: uid box msgid size mail_log_max_lines_per_sec: 0 -- С уважением, Проскурин Кирилл +7(495)727-06-26 доб. 1070

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[Dovecot] backup using rsync
by Scott Murman 14 Oct '09

14 Oct '09

i'm trying to backup the dovecot Maildir files over a cifs share. source is a debian build, share is a readynas. i've been getting rsync: mkstemp 'filename goes here' failed: Not a directory (20) errors. rsync is v3.0. i believe this is related to the dovecot file naming convention that includes characters such as ':' in the filename. anyone else seeing similar behavior? a workaround? i can go to different backup strategies, but rsync is cheap and effective for my needs. thanks, -SM-

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[Dovecot] Homedir for sieve/LDAP
by Edgar Fuß 13 Oct '09

13 Oct '09

I'm somewhat confused regarding Home Directories needed by sieve and setting them for an LDAP userdb. We have system users, passdb ldap, userdb ldap, but home directories are not mounted on the mail server. Now apparently, sieve needs the home directory for .dovecot.lda-dupes. Is there an easier way to give lda/sieve a home directory than setting something along the lines of user_attrs = ...,uid=home=/import/mail/%$/home in dovecot-ldap.conf?

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[Dovecot] failing to deliver to one of multiple destinations
by Edgar Fuß 13 Oct '09

13 Oct '09

Is it defined whether, in case a message should be delivered to multiple destinations via a sieve script, and one of those destinations fail, then the whole delivery is to be considered as successful or not? My case: A sieve script forwarding to and external destinations plus local keep. The keep fails (configuration error, wrong homedir, .dovecot.lda- dupes not writable). According to postfix logs, dovecot deliver returned success. The mail was NOT delivered to the local destination and NOT bounced. Is this expected behaviour?

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[Dovecot] docs for anvil?
by PGNet Dev 13 Oct '09

13 Oct '09

are there any docs for anvil config & usage in 2.0? afaict, nothing's mentioned in the wiki ... thx.

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