- dovecot - dovecot.org

[Dovecot] Denying user won't work as expected
by Frank Bonnet 30 Jun '11

30 Jun '11

Hello I tried to use the "deny user" feature but it does not work as expected ... ( dovecot 2.0.12 ) we use LDAP as authentication source I modified the 10-auth.conf file as the following # <doc/wiki/UserDatabase.txt> !include auth-deny.conf.ext #!include auth-master.conf.ext #!include auth-system.conf.ext #!include auth-sql.conf.ext !include auth-ldap.conf.ext #!include auth-passwdfile.conf.ext #!include auth-checkpassword.conf.ext #!include auth-vpopmail.conf.ext #!include auth-static.conf.ext I modified the auth-deny.conf.ext file as the following passdb { driver = ldap deny = yes # File contains a list of usernames, one per line args = /usr/local/etc/dovecot/deny-users } I have tested writting one user (me) in the /usr/local/etc/dovecot/deny-users and the result is the login is denied for ALL users ... If I do not uncomment the !include auth-deny.conf.ext line in 10-auth.conf file everything works well I really need this feature Thanks for any help

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Re: [Dovecot] Question about "Storage keeps breaking" in logs
by Maria Arrea 30 Jun '11

30 Jun '11

This dovecot box (RHEL 5.6 x64, dovecot 2.0.13, ext4) is a VM over vmware vsphere. The remote SAN disks are presented via iSCSI to the ESX hosts, and the ESX host show them as "local storage" /dev/sdX We have several VM sharing that datastore, no I/O contention detected. I will try with imaptest but this a production enviroment, I will take a couple of weeks to get a "mainteneance window" for this. Any other idea about this? Maybe this problem is load-related? Regards Maria ----- Original Message ----- From: Timo Sirainen Sent: 06/28/11 01:33 AM To: Maria Arrea Subject: Re: [Dovecot] Question about "Storage keeps breaking" in logs On Wed, 2011-06-22 at 19:32 +0000, Maria Arrea wrote: > Jun 6 17:03:23 buzon dovecot: imap(juanan): Warning: mdbox /buzones/18/66/juanan/storage: rebuilding indexes Problem 1: It doesn't log the reason for this rebuild. I can find only one place in code why that could happen, fixed: http://hg.dovecot.org/dovecot-2.0/rev/028b953e7040 > Jun 6 17:03:26 buzon dovecot: imap(juanan): Error: mdbox /buzones/18/66/juanan/mailboxes/P7.Bielorrusia/cd-eslpod-enviado/dbox-Mails: Storage keeps breaking Problem 2: It apparently can't fix that error. But in my tests it gets fixed fine.. > Jun 6 17:03:27 buzon dovecot: imap(juanan): Error: Recent flags state corrupted for mailbox Deleted Messages Probably related to the index rebuild. So this is a local disk with ext4 filesystem, nothing special? It shouldn't be breaking.. How often do these happen? Can you reproduce these by running imaptest against a test account? http://imapwiki.org/ImapTest

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[Dovecot] permissions for dbox attachment directory
by imap＠tnde.org 30 Jun '11

30 Jun '11

I am running dovecot 2.0.13 on CentOS5, set up with only local system users, and single instance store set up in a single directory. e.g. mail_attachment_dir = /var/mail/attachments I get errors when importing mail to IMAP because the attachment directories are owned by the respective mail account user(s) and so cannot be accessed or written to by other users. Are there some user id setting I need to change, or do I have to run dovecot with virtual users under a single system account? Thanks!

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[Dovecot] mirate to dovecot 2.0.13
by Giovanni Mancuso 30 Jun '11

30 Jun '11

Hi, I have in my system dovecot 1.2.11 and i want migrate to dovecot 2.0.13. I have 2 Frontend that proxy all request to Backend and i want migrate first FE and after the BE. Can i install dovecot 2.0.13 in FE that proxy all request to BE with dovecot 1.2.11? Thanks

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[Dovecot] Installing Dovecot v2.0.3 from binary files problem
by Meisam Navaki 30 Jun '11

30 Jun '11

Hi, I've installed dovecot v2.0.13 from binary files.dovecote starts ok,but I get some errors in /var/run/mail.log : dovecot: anvil: Fatal: Error reading configuration: read(/var/run/dovecot/config) failed: EOF dovecot: master: Error: service(anvil): command startup failed, throttling dovecot: master: Error: service(config): child 8606 killed with signal 11 (core dumps disabled) dovecot: master: Error: service(config): command startup failed, throttling dovecot: ssl-params: Fatal: Error reading configuration: read(/var/run/dovecot/config) failed: Connection reset by peer And I've just used example configure files of dovecot. Regards, Meisam Navaki. System Programmer, Bayan Co.

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[Dovecot] Rawlogging uid
by Mikko Lehto 30 Jun '11

30 Jun '11

Hi, this is my first post to the list after years of passive following every now and then. Dovecot: 2.0.13 (3d07ab746a67) prebuilt binaries from xi.rename-it.nl OS: i686 Debian 6.0 squeeze/sid I am about to run a setup where users are virtual and their mail is owned by vmail user. I bumped into minor client issue and needed to enable rawlogging according to http://wiki2.dovecot.org/Debugging/Rawlog This is what was printed to log at first try: Jun 29 21:46:25 (null)Fatal: This process must not be run as root I changed service postlogin to contain "user = vmail" and above error disapperead. I also tried "user = dovecot" which seem to work as well. Is vmail or dovecot user more appropriate for raw logging? >From wiki I got the impression that user must be same as the effective UID of logged in user, which in my setup is vmail(121). Also, maybe the (null)Fatal -message could be improved(?). # dovecot -n # 2.0.13 (3d07ab746a67): /etc/dovecot/dovecot.conf # OS: Linux 2.6.26-1-686 i686 Debian squeeze/sid ext3 auth_debug = yes auth_verbose = yes debug_log_path = /var/log/dovecot/debug.log first_valid_gid = 123 first_valid_uid = 121 info_log_path = /var/log/dovecot/info.log last_valid_gid = 123 last_valid_uid = 121 lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes lmtp_save_to_detail_mailbox = yes log_path = /var/log/dovecot/dovecot.log mail_debug = yes mail_location = maildir:/home/vmail/%n/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 namespace { inbox = yes location = prefix = separator = / type = private } passdb { driver = pam } plugin { sieve = /home/vmail/%n/dovecot.sieve sieve_dir = /home/vmail/%n/sieve sieve_extensions = +enotify +subaddress +vacation } protocols = " imap lmtp sieve" rejection_reason = Your message to <%t> was rejected: %r rejection_subject = Mail delivery failed: returning message to sender service auth { unix_listener auth-userdb { group = vmail mode = 0660 } } service imap { executable = imap postlogin } service postlogin { executable = script-login rawlog user = vmail } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { args = uid=121 gid=123 driver = passwd } userdb { args = uid=121 gid=123 allow_all_users=yes home=/home/vmail/%n driver = static } protocol lda { info_log_path = /var/log/dovecot/lda-info.log log_path = /var/log/dovecot/lda.log mail_plugins = sieve } -- Mikko

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Re: [Dovecot] [Urgent] Email Retrieval from remote servers doesn't use Dovecot
by Joseph Tam 30 Jun '11

30 Jun '11

Shazia Javed writes: > Trying 127.0.0.1... > Connected to 127.0.0.1. > Escape character is '^]'. > * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE > STARTTLS AUTH=PLAIN] Dovecot ready. > ... > > telnet mail.ut.ee 143 > > Trying 193.40.5.156... > Connected to mailhost.ut.ee. > Escape character is '^]'. > * OK IMAP4 ready That is weird. Maybe you got NAT forwarding going on where a firewall or other network appliance (like a load balancer) is translating ip1/143 -> ip2/143? Or you're not on the host you think you're on. You can check the dovecot logs to verify that in fact your client is connecting. Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] Virtual Servers
by Daniel L. Miller 29 Jun '11

29 Jun '11

Maybe a little off-topic - but I hope not too much. Looking for some insight on setting up Dovecot under a virtual server. In particular, I use VirtualBox - and at the moment, Ubuntu Linux. Initial questions on configuration: Caching. It seems to me - and I'm probably wrong - that running a Linux in a VM on a Linux host, there would be a duplication of caching. That is, the host server has a file cache - and the VM, which is otherwise a standard Linux installation, is also going to try to cache its files. This strikes me as a duplication of effort and waste of RAM. Is this something I should devote any time to thinking about and trying to minimize? If so, how? Mail storage. My current mail store is a RAID-10, using the mdbox format. I wish to continue storing the mail on "raw" disks - not place the mail inside a virtual disk. Accordingly, the VM needs to reach the mail outside the VM environment - which according to conventional wisdom means NFS. My initial testing shows NFS results in a dramatically reduced performance for Dovecot. Given that this NFS access is going to be exclusively for Dovecot, and I'm only running a single server, are there any NFS or Dovecot tweaks I should implement? Is there an alternative connectivity for the VirtualBox environment I should explore? -- Daniel

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[Dovecot] [Urgent] Email Retrieval from remote servers doesn't use Dovecot
by Shazia Javed 29 Jun '11

29 Jun '11

------------------------ Dovecot Version: ------------------------ 2.0.13 ------------------------ Output of "dovecot -n": ------------------------ # 2.0.13: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 2.6.35-28-generic x86_64 Ubuntu 10.10 ext4 mail_location = maildir:/home/%u/Maildir passdb { args = %s driver = pam } protocols = imap pop3 ssl = no userdb { driver = passwd } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep } protocol pop3 { pop3_uidl_format = %08Xu%08Xv } --------------------------- Objective: --------------------------- We need to download emails from remote server using Dovecot and thunderbird. Our objective is to store emails in maildir or mbox format, and process them as part of our research project. --------------------------- Problem: --------------------------- Dovecot works for localhost, but not for remote servers. How do I know? Because thunderbird downloads emails in its default location (specified in settings) and not in maildir or mbox folders. If I send mail to <user>@<system_name> using mail command, dovecot works and thunderbird shows the email stored in maildir folder. But for email from <id>@yahoo.com goes to thunderbird's default folder and are browsed from there. --------------------------- Relevant Technical Details: --------------------------- ps auxw|grep "dovecot\|imap\|pop3" root 1033 0.0 0.0 52796 1916 ? Ss 12:45 0:00 /usr/sbin/dovecot -F -c /etc/dovecot/dovecot.conf root 1173 0.0 0.0 75096 3284 ? S 12:45 0:00 dovecot-auth root 1214 0.0 0.0 75188 3424 ? S 12:45 0:00 dovecot-auth -w dovecot 8356 0.0 0.0 50528 2692 ? S 13:30 0:00 pop3-login dovecot 8357 0.0 0.0 50528 2692 ? S 13:30 0:00 pop3-login dovecot 8358 0.0 0.0 50528 2688 ? S 13:30 0:00 pop3-login dovecot 8359 0.0 0.0 50528 2688 ? S 13:30 0:00 pop3-login dovecot 8360 0.0 0.0 50528 2688 ? S 13:30 0:00 pop3-login dovecot 8364 0.0 0.0 50540 2688 ? S 13:30 0:00 imap-login dovecot 8375 0.0 0.0 50540 2692 ? S 13:30 0:00 imap-login dovecot 8378 0.0 0.0 50540 2684 ? S 13:30 0:00 imap-login shaz 9048 0.0 0.0 8956 864 pts/0 S+ 15:06 0:00 grep --color=auto dovecot\|imap\|pop3 sudo netstat -lnptu [sudo] password for shaz: Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:110 0.0.0.0:* LISTEN 1033/dovecot tcp 0 0 0.0.0.0:143 0.0.0.0:* LISTEN 1033/dovecot tcp 0 0 0.0.0.0:64277 0.0.0.0:* LISTEN 2068/skype tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1295/cupsd tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 1389/master tcp 0 0 0.0.0.0:993 0.0.0.0:* LISTEN 1033/dovecot tcp 0 0 0.0.0.0:995 0.0.0.0:* LISTEN 1033/dovecot tcp6 0 0 ::1:631 :::* LISTEN 1295/cupsd udp 0 0 127.0.0.1:45902 0.0.0.0:* 2068/skype udp 0 0 0.0.0.0:33754 0.0.0.0:* 1065/avahi-daemon: udp 0 0 0.0.0.0:5353 0.0.0.0:* 1065/avahi-daemon: udp 0 0 0.0.0.0:68 0.0.0.0:* 2132/dhclient udp 0 0 0.0.0.0:64277 0.0.0.0:* 2068/skype udp6 0 0 :::5353 :::* 1065/avahi-daemon: udp6 0 0 :::50994 :::* 1065/avahi-daemon: sudo lsof -i | grep LISTEN dovecot 1033 root 6u IPv4 7578 0t0 TCP *:imap2 (LISTEN) dovecot 1033 root 7u IPv4 7579 0t0 TCP *:imaps (LISTEN) dovecot 1033 root 9u IPv4 7580 0t0 TCP *:pop3 (LISTEN) dovecot 1033 root 10u IPv4 7581 0t0 TCP *:pop3s (LISTEN) cupsd 1295 root 5u IPv6 7932 0t0 TCP Casper:ipp (LISTEN) cupsd 1295 root 6u IPv4 7933 0t0 TCP localhost.localdomain:ipp (LISTEN) master 1389 root 12u IPv4 9284 0t0 TCP *:smtp (LISTEN) skype 2068 shaz 67u IPv4 18344 0t0 TCP *:64277 (LISTEN) pop3-logi 8356 dovecot 4u IPv4 7580 0t0 TCP *:pop3 (LISTEN) pop3-logi 8356 dovecot 5u IPv4 7581 0t0 TCP *:pop3s (LISTEN) pop3-logi 8357 dovecot 4u IPv4 7580 0t0 TCP *:pop3 (LISTEN) pop3-logi 8357 dovecot 5u IPv4 7581 0t0 TCP *:pop3s (LISTEN) pop3-logi 8358 dovecot 4u IPv4 7580 0t0 TCP *:pop3 (LISTEN) pop3-logi 8358 dovecot 5u IPv4 7581 0t0 TCP *:pop3s (LISTEN) pop3-logi 8359 dovecot 4u IPv4 7580 0t0 TCP *:pop3 (LISTEN) pop3-logi 8359 dovecot 5u IPv4 7581 0t0 TCP *:pop3s (LISTEN) pop3-logi 8360 dovecot 4u IPv4 7580 0t0 TCP *:pop3 (LISTEN) pop3-logi 8360 dovecot 5u IPv4 7581 0t0 TCP *:pop3s (LISTEN) imap-logi 8364 dovecot 4u IPv4 7578 0t0 TCP *:imap2 (LISTEN) imap-logi 8364 dovecot 5u IPv4 7579 0t0 TCP *:imaps (LISTEN) imap-logi 8375 dovecot 4u IPv4 7578 0t0 TCP *:imap2 (LISTEN) imap-logi 8375 dovecot 5u IPv4 7579 0t0 TCP *:imaps (LISTEN) imap-logi 8378 dovecot 4u IPv4 7578 0t0 TCP *:imap2 (LISTEN) imap-logi 8378 dovecot 5u IPv4 7579 0t0 TCP *:imaps (LISTEN) telnet 127.0.0.1 110 Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'. +OK Dovecot ready. telnet 127.0.0.1 143 Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE STARTTLS AUTH=PLAIN] Dovecot ready. 1 logout * BYE Logging out 1 OK Logout completed. Connection closed by foreign host. telnet mail.ut.ee 110 Trying 193.40.5.156... Connected to mailhost.ut.ee. Escape character is '^]'. +OK POP3 ready quit +OK Connection closed by foreign host. telnet mail.ut.ee 143 Trying 193.40.5.156... Connected to mailhost.ut.ee. Escape character is '^]'. * OK IMAP4 ready 1 logout * BYE 1 OK completed Connection closed by foreign host. ----------------- Commentary: ----------------- As is obvious from the commands and output listed above that dovecot is running, listening on 110 and 143 - but only for localhost. When I try to telnet mail.ut.ee 110/143 I get to see IMAP4/POP3 ready rather than Dovecot ready. ----------------- Queries ----------------- Shouldn't I get "Dovecot ready" message for remote servers as well? It is an MRA and we shouldn't be required to install it on remote servers, right? What should I do to make dovecot work for remote servers?

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[Dovecot] LDAP timeout
by Bernhard Schmidt 29 Jun '11

29 Jun '11

Hi, we recently hit an issue where one (of the three configured) LDAP servers dropped an index on an attribute due to a misconfiguration, which caused all/most queries for passdb to take a very long time (several 10s of seconds). The other servers would have been fine, but it seems like Dovecot does either not set a timelimit on the query or uses a very high one. I could not find any place to control that either. Is there any knob to tune the LDAP timeout? Bernhard

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