- dovecot - dovecot.org

[Dovecot] imap/pop problem
by MP Netsai 30 May '13

30 May '13

Dear All, I hope you can help me on this trouble i am getting. I cant seem to get email even though i have given the correct directory for mail location. Here is my config: ===== # 2.1.7: /etc/dovecot/dovecot.conf # OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.0 ext4 auth_mechanisms = plain login disable_plaintext_auth = no first_valid_uid = 1001 last_valid_uid = 1001 mail_debug = yes mail_gid = exim mail_location = maildir:/var/mail/virtual/%d/%n mail_uid = exim 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 } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } protocols = " imap pop3" service auth { unix_listener auth-userdb { group = exim mode = 0600 user = exim } } ssl_cert = </usr/local/etc/exim/exim.cert ssl_key = </usr/local/etc/exim/exim.key userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol pop3 { pop3_uidl_format = %08Xu%08Xv } ===== the virtual email directory is as follows: ===== root@peyote:/var/mail/virtual# ls -l drwx------ 9691 exim exim 266240 May 28 16:17 mydomain.co.zw ===== Mail is moving ok, into the virtual directory. I just cant seem to pop them out of there. I hope someone can get to point me in the right direction. Regards,

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Re: [Dovecot] system account delivery userdb authentication
by Ben Morrow 29 May '13

29 May '13

[Please keep replies on the list.] At 6AM +0200 on 29/05/13 you (Yann Shukor) wrote: > > Although simpler to set up, I chose to steer clear of the single user > representing 'all' because I liked the idea of giving users access to > Usermin allowing them to manage their own password and vacation msg > (+filtering, ...) and furthermore they could login with their username > (domain-less). While it's often convenient to make a distinction between 'system' and 'virtual' users, Dovecot doesn't actually know the difference. It just looks users up in the passdb and userdb you have configured. This means it's perfectly straightforward to do a completely 'virtual user' setup, and then change the passdb to 'pam', which will let the users log in with their ordinary Unix password. To allow users to log in with just a username, all you need to do is make sure the users in the userdb and passdb are listed that way. Userdb passwd and passdb pam naturally are, but there's nothing to stop you using other userdbs if you want to. The only trick here is that if you're using LDA/LMTP then incoming deliveries will (or, at least, usually should) be addressed to a full email address, so you need auth_username_format to trim that back to a username. I don't know anything about Usermin, but if it is trying to set up traditional procmail filtering and vacation(1), you may be in trouble. Or, at least, you may have to give up on using Dovecot to deliver the mail and let Postfix's local(8) and procmail deliver it into maildirs themselves. If you're happy with this, this isn't a problem for Dovecot, but it might be better to go with Sieve filtering instead. Sieve is a newish mail filtering language, designed primarily to be safe (procmail has a nasty habit of letting users run arbitrary programs). Dovecot's LDA has a pretty complete sieve implementation called Pigeonhole (you may need to install it separately), which also supports a protocol called ManageSieve designed for uploading sieve scripts remotely. There are plugins for some webmail systems (and some desktop mail clients, for that matter) which let the user edit their filters in a gooey way; this includes setting up vacation messages. I use Roundcube webmail for this purpose; it also has a perfectly good PAM password- changing plugin. Ben

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[Dovecot] dsync
by Erik Colson 29 May '13

29 May '13

Hi Is dovecot dsync considered an alternative to offlineimap (or others) when both distant and local are IMAP dovecot servers ? I used offlineimap for this, but somehow offlineimap got messed up (more than once, but without me able to explain how it happened). So I'm considering dsync for this purpose... Thanks! -- erik

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[Dovecot] Enable IMAP only for certain users/IP
by Simone Marx :: Edinet Srl 29 May '13

29 May '13

Hi, I'm trying to config dovecot to enable IMAP protocol only for certain IPs and users. The logical steps I've followed are: 1. If a user is trying to login from an IP that I've authorized ( listed in a file) the request is authorized. 2. If not, if the user is listed in a second file the request is authorized. 3. If also this check fails the request is rejected. I'm using PAM for passdb and a passwd-file for userdb: passdb { driver = pam args = session=yes failure_show_msg=yes max_requests=16 cache_key=%u%r%l dovecot-%s } userdb { driver = passwd-file args = /etc/passwd-dovecot } In /etc/pam.d/ there are two files: dovecot-pop3 dovecot-imap dovecot-pop3: #%PAM-1.0 @include common-auth @include common-account @include common-session (for this protocol everything works fine, I don't want to limit it.) dovecot-imap: #%PAM-1.0 @include common-auth auth sufficient pam_listfile.so item=rhost sense=allow file=/etc/dovecot/imaphosts onerr=fail auth required pam_listfile.so item=user sense=allow file=/etc/dovecot/imapusers onerr=fail @include common-account @include common-session If I'm not wrong, once the user is authenticated, PAM checks if the remote IP address is in imaphosts; if it's true, it returns PAM_SUCCESS and stops the execution of the auth block, else if it's false, PAM executes the next line, verifying the presence of the username in imapusers file; if found, then return PAM_SUCCESS, else fail. If this can work, I've a problem with pam_listfile.so and IP addresses: I want to do something smarter than specifying 2^11 IP addresses instead a /21 or IP/netmask Are there alternatives for doing it better? Thanks. Sincerely, Simone Marx.

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[Dovecot] Corrupt index file zlib
by Paul Lim 29 May '13

29 May '13

Hi, I'm getting this error constantly on a couple of folders. No matter what I do it keeps recurring. -- 2013-05-29 14:15:03 imap(nj(a)***.com.au): Error: Cached message size smaller than expected (2551 < 8192) 2013-05-29 14:15:03 imap(nj(a)***.com.au): Error: Maildir filename has wrong S value, renamed the file from /home/***.com.au/nj/.***.Builders/cur/1369030267.M775209P12595.pygmy,S= /2551:2,S to /home/***.com.au/nj/.***.Builders/cur/1369030267.M775209P12595.pygmy,S= /2551:2,S 2013-05-29 14:15:03 imap(nj(a)***.com.au): Error: Corrupted index cache file /home/archarch.com.au/nj/.***.Builders/dovecot.index.cache: Broken /physical size for mail UID 13 2013-05-29 14:15:03 imap(nj(a)***.com.au): Error: Cached message size smaller than expected (2551 < 8284) 2013-05-29 14:15:03 imap(nj(a)***.com.au): Error: Maildir filename has wrong S value, renamed the file from /home/***.com.au/nj/.***.Builders/cur/1369030267.M775209P12595.pygmy,S= /2551:2,S to /home/***.com.au/nj/.***.Builders/cur/1369030267.M775209P12595.pygmy,S= /2551:2,S 2013-05-29 14:15:03 imap(nj(a)***.com.au): Error: Corrupted index cache file /home/archarch.com.au/nj/.***.Builders/dovecot.index.cache: Broken /physical size for mail UID 13 2013-05-29 14:15:03 imap(nj(a)***.com.au): Error: read(/home/***.com.au/nj/.***.Builders/cur/1369030267.M775209P12595. pygmy,S=2551:2,S) failed: Input/output error (uid=13) --- stuff I've done: - Deleted dovecot* in .Builders/ - run maildir-size-fix.pl -v -r -f- c on .Builders/ - delete and recreate the folder Dovecot 2.1.7 (wheezy) zlib enabled maildir_broken_filename_sizes = yes There are only 6 emails, so it's only building dovecot.index.log, not the cache file --- dovecot-uidlist --- 3 V1317717759 N1 G1b2d4a37936fa551430d0000c0318918 1 :1369030267.M775209P12595.pygmy,S=8284 2 :1369030564.M957106P12595.pygmy,S=13188 3 :1369030568.M223636P12595.pygmy,S=23270 4 :1369030568.M223637P12595.pygmy,S=10813 5 :1369030568.M223638P12595.pygmy,S=58600 6 :1369030615.M783237P12595.pygmy,S=9677 7 :1369030267.M775209P12595.pygmy,S=2551 8 :1369030564.M957106P12595.pygmy,S=3560 ----- --- ls cur --- 1369030267.M775209P12595.pygmy,S=8284:2,S 1369030564.M957106P12595.pygmy,S=13188:2,RS 1369030568.M223636P12595.pygmy,S=23270:2,RS 1369030568.M223637P12595.pygmy,S=10813:2,RS 1369030568.M223638P12595.pygmy,S=58600:2,RS 1369030615.M783237P12595.pygmy,S=9677:2,RS ---- It all seems to match... but it continues to break. If I delete the first email file, it breaks on the next one as well. Any thoughts?? I'm thinking I'll probably disable zlib if I can't find a solution... will this mean I have to decompress all the compressed emails? cheers Paul

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[Dovecot] Dovecot 2.1.7-7 only allow localhost access to IMAP and POP3
by Torben Schou Jensen 29 May '13

29 May '13

Recently I have upgraded my server to Debian 7. Debian have now removed uw-imapd and suggest using dovecot instead. Debian include dovecot version 2.1.7-7. On http://www.debian-administration.org/articles/275 and http://www.debian-administration.org/articles/200 I can read how to setup older version of dovecot with SquirrelMail. They recommend to use uncrypted IMAP when SquirrelMail is on same server. What I would like to support is then imap, imaps, pop3 and pop3s. imaps and pop3s for external users. imap and pop3 only open for localhost, that is SquirrelMail on same machine. With dovecot 1 you could restrict access using "imap_listen = localhost" How do I make the same restriction with localhost on dovecot 2 ??? Brgds Torben

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[Dovecot] dsync Panic: Unknown key: send_mail_requests
by Oli Schacher 29 May '13

29 May '13

Hi Timo With the current dovecot hg we're getting dsync replication errors "Panic: Unknown key: send_mail_requests" followed by a crash. This seems to have been introduced somewhere around http://hg.dovecot.org/dovecot-2.2/rev/4883a8e1db13 Log output from latest hg, 2.2.2 (e7c474011934+): May 29 09:30:53 munged03 dovecot: doveadm(luke(a)example.com): Panic: Unknown key: send_mail_requests May 29 09:30:53 munged03 dovecot: doveadm(luke(a)example.com): Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0(+0x5f7da) [0x7f84f84637da] -> /usr/lib64/dovecot/libdovecot.so.0(+0x5f826) [0x7f84f8463826] -> /usr/lib64/dovecot/libdovecot.so.0(+0x2006a) [0x7f84f842406a] -> dovecot/doveadm-server() [0x42c41b] -> dovecot/doveadm-server() [0x42908b] -> dovecot/doveadm-server(dsync_brain_master_init+0x1c9) [0x4186f9] -> dovecot/doveadm-server() [0x416606] -> dovecot/doveadm-server() [0x40c94f] -> dovecot/doveadm-server() [0x414b7a] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x36) [0x7f84f8472b66] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0xa7) [0x7f84f8473c17] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x28) [0x7f84f8472b08] -> /usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f84f8428ae3] -> dovecot/doveadm-server(main+0x121) [0x4152c1] -> /lib64/libc.so.6(__libc_start_main+0xfd) [0x34de41ecdd] -> dovecot/doveadm-server() [0x40c1b9] May 29 09:30:53 munged03 dovecot: doveadm(luke(a)example.com): Fatal: master: service(doveadm): child 49077 killed with signal 6 (core dumped) dovecot -n is attached Best regards Oli -- message transmitted on 100% recycled electrons

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[Dovecot] Email migration
by Romer Ventura 29 May '13

29 May '13

Hello, So I am currently running dovecot 1.2.11 on Debian 5 for our production email systems. We just deployed some new Debian 7 servers and we will be upgrading to the latest dovecot version. I've been reading the docs, but I wanted to heard some feedback on the import of all my current email into the new installation. We have 320GB worth of email. Any gotchas I should be prepared for? Any complications I should be aware of when importing all these data? Any thoughts would be appreciated. Thanks. <BR CLEAR="ALL"> <hr style="border: 1px solid #CCC;"> <p style="font-style:italic; font-size:8pt; font-family:verdana; color:gray;">This document and attachments may contain technical data controlled under the U.S. International Traffic in Arms Regulations (ITAR) or the Export Administration Regulations (EAR) and may not be exported to a Foreign Person, either in the U.S. or abroad, without the proper authorization by the U.S. Department of State or Department of Commerce, whichever is applicable. CONFIDENTIALITY NOTE: This electronic transmission, including all attachments, is directed in confidence solely to the person(s) to whom it is addressed, or an authorized recipient, and may not otherwise be distributed, copied or disclosed. The contents of the transmission may also be subject to intellectual property rights and such rights are expressly claimed and are not waived. If you have received this transmission in error, please notify the sender immediately by return electronic transmission and then immediately delete this transmission, including all attachments, without copying, distributing or disclosing same. The recipient should check this e-mail and any attachments for the presence of viruses. Houston Sigma Technologies L.P. accepts no liability for any damage caused by any virus transmitted by this e-mail.</p>

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[Dovecot] system account delivery userdb authentication
by Yann Shukor 29 May '13

29 May '13

Hi I have a remaining issue with a mail server setup. Composed of Postfix and Dovecot it is is a 'local' mail server At first I relied upon Mysql to store the various parameters, and then switched to a flat file approach I also initially set the server up to handle virtual users, but then I realized that it was destined to manage local system accounts only. So I reconfigured it accordingly Relying on system accounts for authentication means that the domain name component is absent from the username (as opposed to virtual user identifiers) This caused me some difficulty at first with roundcube, but I was able to get around it through a manual adjustment in Mysql The remaining aspect that isn't working is the delivery of emails. The entry in master.cf for dovecot looks looks this: dovecot unix - n n - - pipe flags=DRhu user=mail:mail argv=/usr/lib/dovecot/deli ver -d ${recipient} The problem is that the recipient equates to the users email address, which can't in fact be used for authentication purposes with system accounts. I then tried replacing recipient with user: dovecot unix - n n - - pipe flags=DRhu user=mail:mail argv=/usr/lib/dovecot/deliver -d ${user} There seems to be a rights issue because I get the following error: dovecot Fatal: setgid(100(users)) failed with euid=8(mail), gid=8(mail), egid=8(mail): Operation not permitted Any ideas ? thanks yann # 1.2.15: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-686 i686 Debian 6.0.7 ext4 log_timestamp: %d-%m-%Y %H:%M:%S protocols: imap imaps pop3 pop3s ssl_cert_file: /etc/ssl/certs/postfix.pem ssl_key_file: /etc/ssl/private/postfix.key login_dir: /var/run/dovecot/login login_executable(default): /usr/lib/dovecot/imap-login login_executable(imap): /usr/lib/dovecot/imap-login login_executable(pop3): /usr/lib/dovecot/pop3-login mail_privileged_group: mail mail_location: maildir:/var/mail/%u mbox_write_locks: fcntl dotlock mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(pop3): /usr/lib/dovecot/pop3 mail_plugin_dir(default): /usr/lib/dovecot/modules/imap mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3 lda: auth_socket_path: /var/run/dovecot/auth-master postmaster_address: postmaster(a)holinice.com mail_plugins: sieve log_path: syslog_facility: mail auth default: mechanisms: plain login verbose: yes passdb: driver: pam userdb: driver: passwd socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix master: path: /var/run/dovecot/auth-master mode: 432 user: mail group: mail

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[Dovecot] dovecot + virtio (9p2000.L) = errors
by epek＠gmx.net 28 May '13

28 May '13

Hi! I hope someone knows more about the issues I've encountered in: Setup: I am running dovecot 2.1.7 on Debian Wheezy in a virtual machine (kvm-style qemu-kvm: host: ubuntu 13.04/1.4.0-dfsg-1expubuntu). The mail storage is a directory on the host machine mounted via virtfs (9p2000.L) on the guest. Furthermore ISPConfig is involved in that setup, but that should not make any significant difference at that point. Problem resolved: The problem is, that similar to nfs mmap() and dotlocking seem to fail - the mmap issue could be resolved by adding: mmap_disable=yes to dovecot.conf Problem remaining: Still the following errors remain, despite dotlock_use_excl=no May 27 12:54:51 host dovecot: imap(test@mydomain): Error: fstat(/var/vmail/mydomain/test/.quotausage.lock) failed: No such file or directory May 27 12:54:51 host dovecot: imap(test@mydomain): Error: file dict commit: file_dotlock_open(/var/vmail/mydomain/test/.quotausage) failed: No such file or directory May 27 12:54:51 host dovecot: imap(test@mydomain): Error: fstat(/var/vmail/mydomain/test/Maildir/dovecot-uidlist.lock) failed: No such file or directory May 27 12:54:51 host dovecot: imap(test@mydomain): Error: fstat(/var/vmail/mydomain/test/Maildir/dovecot-uidlist.lock) failed: No such file or directory May 27 12:54:51 host dovecot: imap(test@mydomain): Error: fstat(/var/vmail/mydomain/test/Maildir/dovecot-uidlist.lock) failed: No such file or directory May 27 12:54:51 host dovecot: imap(test@mydomain): Error: fstat(/var/vmail/mydomain/test/Maildir/dovecot-uidlist.lock) failed: No such file or directory May 27 12:54:51 host dovecot: imap(test@mydomain): Error: fstat(/var/vmail/mydomain/test/Maildir/dovecot-uidlist.lock) failed: No such file or directory May 27 12:54:51 host dovecot: imap(test@mydomain): Error: fstat(/var/vmail/mydomain/test/Maildir/dovecot-uidlist.lock) failed: No such file or directory May 27 12:54:52 host dovecot: imap(test@mydomain): Error: fstat(/var/vmail/mydomain/test/Maildir/dovecot-uidlist.lock) failed: No such file or directory May 27 12:54:52 host dovecot: imap(test@mydomain): Error: file_dotlock_create(/var/vmail/mydomain/test/Maildir/dovecot-uidlist) failed: No such file or directory May 27 12:54:52 host dovecot: imap(test@mydomain): Error: fstat(/var/vmail/mydomain/test/Maildir/dovecot-uidlist.lock) failed: No such file or directory May 27 12:54:52 host dovecot: imap(test@mydomain): Error: fstat(/var/vmail/mydomain/test/Maildir/dovecot-uidlist.lock) failed: No such file or directory May 27 12:54:52 host dovecot: imap(test@mydomain): Error: file_dotlock_create(/var/vmail/mydomain/test/Maildir/dovecot-uidlist) failed: No such file or directory The "failed" files are existing on that path - permissions for the configured "vmail" user and group exist (0600). I'd be greatful for any hint on how to resolve that issue - Thanks in advance! Regards Erich

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