- dovecot - dovecot.org

[Dovecot] Getting more spam
by postmaster＠webisp.co.uk 22 Mar '07

22 Mar '07

Hi I am taking part in writing an anti spam filter for my uni project. However at the moment I am not getting much spam to my mail server - running dovecot and postfix :) Do you have any suggestions for getting more? Thanks Tom

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Re: [Dovecot] Replacing qmail + vpopmail with: sendmail + dovecot.
by David Robillard 22 Mar '07

22 Mar '07

> Hi, > I wonder if it posible to replace qmail + vpopmail with sendmail + dovecot? > > The idea is like this: > - use sendmail + milter API to filter spam/virus and deliver the email to > the dovevot MDA (LDA) > - dovecot should save the email to the directory as specified in the > vpopmail DB > - maintain the vpopmail BD (users + passwd) > - use dovecot pop3/imap for the clients > - use sendmail again to receive the email from the pop3/imap users and > deliver the email to the internet as usual. > > Anyone has done this? It is posible in the paper, in the real world? Hi Oliver, We run sendmail + dovecot on FreeBSD for around 3500 users. It runs smooth. We also run two other FreeBSD machines with Sophos PureMessage for Anti-SPAM and Anti-Virus cleanup which is linked via sendmail's milter. You're going to need Procmail to link sendmail and dovecot for local mail delivery to the user's mbox or Maildir, which ever you prefer. We're using Maildir here to serve both IMAP over SSL and POP3 over SSL. If you need any help in the setup of sendmail + procmail + dovecot, just tell me. Of course, if you're more experienced with Postfix, then use it. IMHO it's not as flexible as sendmail. But YMMV. Have fun, David -- David Robillard UNIX systems administrator & Oracle DBA CISSP, RHCE & Sun Certified Security Administrator Montreal: +1 514 966 0122

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[Dovecot] GSSAPI authentication behind HA servers
by Mustafa A. Hashmi 22 Mar '07

22 Mar '07

Hi all, We have 2 mail servers sitting behind linux-HA machines.The mail servers are currently running dovecot 1.0rc2. Looking to enable GSSAPI authentication, I exported krb keytabs for imap/node01.domain@REALM and imap/node02.domain@REALM for both mail servers. However, clients are connecting to mail.domain.com, which results in a mismatch as far as the keytab is concerned (and rightly so). Connections directly to node01 and node02 work fine for gssapi auth. I proceeded to export a key for mail.domain.com into the same keytab for both the nodes, however, I don't think more than a single key is checked for the imap service, and authentication errors continued. Is anybody running something similar? Could you please explain how you have this working on your end? Appreciate any help. Regards, -- Mustafa A. Hashmi mahashmi(a)gmail.com

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[Dovecot] Preparing for sharing with ACLs
by Mike Brudenell 22 Mar '07

22 Mar '07

Greetings - I'm finalising the layout of our new mailstore ready for a trial service using Dovecot (switching from the UW IMAP server). This is using Maildir mailboxes, changing from our current mix of MBX and traditional Berkeley. One of the things we are often asked for is how someone can grant another access to their mailbox: eg, a Head of Department wants the Departmental Secretary to review and reply to e-mails, but not tell her the password. I understand that Dovecot doesn't provide a user-interface for setting up or manipulating these, nor the IMAP ACL extension at this time, so... Q1. Are there plans to add support for ACLs in the future, along with an end-user accessible means of setting these up and manipulating them? I also understand that it is currently possible for the Mail Admin to set up ACLs (globally and/or per-mailbox) and shared folders (I admit I'm having trouble getting my head around the latter in the Wiki a bit). I' hoping to avoid using the current "has to be done by the Administrator" setup, and instead want to plan for any future end- user interface. We are using filestore quotas for the Maildirs, so at present a user's Maildir directories and files are owned by their username (UNIX uid) and group (UNIX gid). * Naturally for filestore quotas to continue to work items need to continue to be owned by the person's username (UNIX uid). When end-user support for shared mailboxes and ACLs comes along one day (hopefully!) I assume two levels of access control are needed: 1. At the filestore level the other authorised users will need read and/or write access to the directories and files comprising the Maildir, and 2. Suitable ACLs will be needed to grant access via Dovecot to authorised persons, but not to other random people. So looking to the future, I'm therefore thinking that instead of having each user's Maildir directories and files owned by their UNIX uid and gid I should instead have them owned by their UNIX uid and a common-to-everyone UNIX gid. Eg, drwxrwx--- user1:mail directoryname -rw-rw---- user1:mail filename I realise there is an element of risk here, as we would be relying on Dovecot's security to limit access so that only authorised users can access a given person's mailbox. Is this the right approach to adopt? Or is there a better way of (one day) enabling Person A to share their mailbox to Person B but not Person C? (We need a solution that is general and based on ACLs, not one that relies on our creating custom UNIX groups and assigning people's usernames to these.) I've read the Wiki pages on ACLs and Shared Folders, but am having trouble putting the information together in my mind to (one day) solve this particular requirement. Can anyone shed any light, please? Cheers, Mike B-) -- The Computing Service, University of York, Heslington, York Yo10 5DD, UK Tel:+44-1904-433811 FAX:+44-1904-433740 * Unsolicited commercial e-mail is NOT welcome at this e-mail address. *

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[Dovecot] home_location or smth like that
by razor 22 Mar '07

22 Mar '07

hi dovecot list help me please dovecot-1.0.r27 exim lda virtual users in ldap base i decided to start using the sieve pluging so i have to make the homes (now my homeDirectory in ldapbase is /nonexistent). there is a lot of users, so i dont wonna to make changes in every ldap record + imho the hard link to userhome in ldap - its a not good idea. so is there any way to make it easy? may be like home_location = bla-bla-bla/%n/home in dovecot.conf (or in dovecot-ldap.conf ) sorry for my english -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/

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[Dovecot] corrupted transaction log error resulting in multiple deliveries
by Justin McAleer 22 Mar '07

22 Mar '07

I'm finally picking my dovecot project back up now, and after upgrading rc19 to rc27, I sent a test message to an existing account which resulted in log entries like these: Mar 16 08:45:37 node7 deliver(user(a)example.com): Corrupted transaction log file /var/indexes/example/com/u/us/user/.INBOX/dovecot.index.log: Append with UID 3, but next_uid = 15368 Mar 16 08:45:37 node7 deliver(user(a)example.com): msgid=<20070316124031.8F089D39A5(a)node7.neonova.net>: save failed to INBOX Mar 16 08:45:37 node7 postfix/pipe[29267]: 8F089D39A5: to=<user(a)example.com>, relay=dovecot, delay=306, delays=306/0.01/0/0.02, dsn=4.3.0, status=deferred (temporary failure) So, as you can see deliver has the problem and defers delivery. Is dovecot supposed to be able to recover from a corrupted log file on its own? It repeated this until I manually wiped out the index directory (didn't try just removing the log files first, sorry). The kicker is that deliver actually did save the message to the inbox every time, so multiple copies were delivered (every time I flushed the queue until it was actually fixed, a copy was delivered). I have my mail directories on an NFS mount, and indexes on localdisk, FYI.

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[Dovecot] Throttling Logins
by Sean Kamath 22 Mar '07

22 Mar '07

Hi. Earlier today I was hit with 612 login attempts in 7 minutes. They ramped up slowly, too. :-) They quickly hit the file descriptor limit. And then a login server spawned and died so quickly that dovecot just died. My question is, is there a way to throttle the number of login connections? I'm doing it in my firewall now, but it would be nice to be able to say something like "max-login-attempts: X" before we blacklist the IP (for some configurable time). yeah, I know V4.2 :-) By the way, I *really* appreciate all the effort that's gone into Dovecot. Great work, everyone. Sean

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[Dovecot] mail looping
by Steven F Siirila 22 Mar '07

22 Mar '07

We are running Postfix 2.3.3 and Dovecot 1.0-RC27 on a Solaris 10 server. We use the Dovecot LDA for local delivery. Problems arise with looping mail whenever a user's .forward contains a reference to themselves. This most frequently occurs when a user sets up a vacation since it then puts this in their .forward file: \username, "|/usr/bin/vacation username" The vacation program runs fine, and sends a notice back to the message originator, but when an attempt is made to deliver the message locally, it fails with: Mar 21 13:02:16 myhost.mydomain postfix/local[13373]: 3DF5A2C63: to=<systest(a)myhost.mydomain>, relay=local, delay=0.15, delays=0.12/0/0/0.03, dsn=5.4.6, status=bounced (mail forwarding loop for systest(a)myhost.mydomain) Any ideas? I hope it's something stupid I've overlooked... Noteworthy line in postfix/main.cf: mailbox_command = /opt/dovecot/libexec/dovecot/deliver -f "$SENDER" and finally, dovecot -n: # /etc/opt/dovecot/dovecot.conf syslog_facility: local6 protocols: imap imaps pop3 pop3s listen(default): *:143 listen(imap): *:143 listen(pop3): *:110 ssl_listen(default): *:993 ssl_listen(imap): *:993 ssl_listen(pop3): *:995 ssl_cert_file: /etc/opt/openssl/certs/dovecot.pem ssl_key_file: /etc/opt/openssl/private/dovecot.pem shutdown_clients: no login_dir: /var/opt/dovecot/run/dovecot/login login_executable(default): /opt/dovecot/libexec/dovecot/imap-login login_executable(imap): /opt/dovecot/libexec/dovecot/imap-login login_executable(pop3): /opt/dovecot/libexec/dovecot/pop3-login login_processes_count: 32 login_max_processes_count: 4096 max_mail_processes: 8192 first_valid_uid: 100 default_mail_env: mbox:~/:INBOX=/var/mail/%u mail_location: mbox:~/:INBOX=/var/mail/%u mail_full_filesystem_access: yes mbox_lazy_writes: no mail_executable(default): /opt/dovecot/libexec/dovecot/imap mail_executable(imap): /opt/dovecot/libexec/dovecot/imap mail_executable(pop3): /opt/dovecot/libexec/dovecot/pop3 mail_plugin_dir(default): /opt/dovecot/lib/dovecot/imap mail_plugin_dir(imap): /opt/dovecot/lib/dovecot/imap mail_plugin_dir(pop3): /opt/dovecot/lib/dovecot/pop3 imap_client_workarounds(default): delay-newmail outlook-idle tb-extra-mailbox-sep imap_client_workarounds(imap): delay-newmail outlook-idle tb-extra-mailbox-sep imap_client_workarounds(pop3): outlook-idle pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %08Xu%08Xv namespace: type: private separator: / location: mbox:~/:INBOX=/var/mail/%u inbox: yes hidden: yes auth default: username_format: %Lu verbose: yes debug: yes passdb: driver: pam args: session=yes * userdb: driver: passwd -- Steven F. Siirila Office: Lind Hall, Room 130B Internet Services E-mail: sfs(a)umn.edu Office of Information Technology Voice: (612) 626-0244 University of Minnesota Fax: (612) 626-7593

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[Dovecot] Timeouts connecting via POP3
by Don O'Neil 22 Mar '07

22 Mar '07

I'm experiencing timeouts from time to time from both Mac Mail and Outlook when connecting to my server. I originally suspected that it might be process # related, so I increased the auth & login process counts but that hasn't seemed to make a difference. I'm running 1.0rc10 which came with my DirectAdmin control panel. I'm wondering if this problem is known and was fixed in a later release? I'm waiting for instructions from the DirectAdmin folks on building a new version in case they do something special. Any ideas? Thanks!

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[Dovecot] Solaris Dovecot dovecot dovecot-1.0.rc27
by Randall Svancara 22 Mar '07

22 Mar '07

To all, I am using Dovecot on solaris 10. Home directories are mounted using NFS. However, they are not readable by root. I compiled Dovecot from the source. I set the following environment variables: export LDFLAGS='-L/local/software/openssl/lib -R/local/software/openssl/lib' export CPPFLAGS=-I/local/software/openssl/include Then I ran gmake and the gmake install. In the server logs, when I attempt to connect to port 993 using imap over SSL, i receive the following error: dovecot: Mar 21 15:34:25 Info: imap-login: Login: user=<someusername>, method=PLAIN, rip=134.121.92.228, lip=134.121.5.141, TLS dovecot: Mar 21 15:34:25 Error: IMAP(someusername): ld.so.1: imap: fatal: libgcc_s.so.1: open failed: No such file or directory dovecot: Mar 21 15:34:25 Error: child 13085 (imap) killed with signal 9 Has anyone seen similar issues? Randall

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[Dovecot] Comments about LDA wiki page
by Magnus Holmgren 22 Mar '07

22 Mar '07

I've just tried out Dovecot LDA. The reason I didn't want to use it before was that I found it unnecessary together with Exim, plus I wanted to use Exim's filtering. But now I wanted to see if can notice any improvement when the indexes are updated on delivery, and I saw that it's possible to use Exim filters and pass the resulting folder with -m. Now, correct me if I'm wrong, but IIUC some corrections, improvements, and comments could be made on http://wiki.dovecot.org/LDA. In the "Site-wide setup" section (and in dovecot.conf) it's suggested that access be restricted to the master socket somehow. The first Exim example ("System-users"), however, requires a world-writable socket. Uncomment "group = mail" and deliver will complain that setgid() fails. In this situation, the "-d $local_part@$domain" is unnecessary because then deliver will use the name of the user it's running as (it should probably have been just "-d $local_part" anyway). However, if deliver is run by root (which is by default impossible under Exim) or setuid root, then a destination user is mandatory. Oh wait, without -d the auth socket isn't used at all, only the HOME environment variable and default_mail_env are. Well, it shouldn't matter much if you're running a standard pam/passwd setup, but with a more complicated non-virtual setup I see only four solutions: Make deliver setuid root, remove root from the compiled-in FIXED_NEVER_USERS list, run deliver as a user/group that has write access to all mailboxes, or make the master socket world-writable. -- Magnus Holmgren holmgren(a)lysator.liu.se (No Cc of list mail needed, thanks)

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[Dovecot] How does vpopmail support works?
by Oliver Schulze L. 22 Mar '07

22 Mar '07

Hi, I'm still trying to migrate a running qmail + vpopmail to sendmail + dovecot. I need the milter stuff from sendmail. I got sendmail + dovecot running using the migrated tables from the vpopmail DB, but I'm facing the UID problem in pop3. So, now I'm following the vpopmail authdb path. My questions are: - what do I need, a running vpopmail server (lib + binary, etc)? - or only the DB? This is on Centos 4.4 Many thanks Oliver -- Oliver Schulze L. | Get my e-mail after a captcha in: Asuncion - Paraguay | http://tinymailto.com/oliver

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[Dovecot] Wiki needs updating: Dovecot LDA + Dovecot Sieve + Exim
by Stephen Usher 22 Mar '07

22 Mar '07

So as to make sure that Dovecot Sieve's vacation system works Exim has to be forced to generate a "Reply-To:" header in the message (which it doesn't do by default). The current example for using the Dovecot LDA with Exim doesn't do this. Here is a replacement example for the local_delivery transport:- local_delivery: driver = pipe command = /usr/local/libexec/dovecot/deliver -d $local_part message_prefix = message_suffix = log_output delivery_date_add envelope_to_add return_path_add headers_add = Reply-To: ${if def:header_reply-to:{$h_reply-to:}{$h_from:}} #group = mail #mode = 0660 Basically, if the Reply-To: header exists than it merely gets overwritten with itself. If it doesn't then the header is created and the contents of the From header is put into it. If this is not done then the libsieve over restrictive rules (requiring a "Reply-To:" header even though the RFC doesn't require it) will not allow the vacation system to work. Steve -- --------------------------------------------------------------------------- Computer Systems Administrator, E-Mail:-steve@earth.ox.ac.uk Department of Earth Sciences, Tel:- +44 (0)1865 282110 University of Oxford, Parks Road, Oxford, UK. Fax:- +44 (0)1865 272072

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[Dovecot] Doubled mails and UIDs
by Adam Lackorzynski 22 Mar '07

22 Mar '07

Hi, I'm still seeing mails being downloaded twice via POP3 in my setup, running rc27. The log file shows: dovecot: Mar 18 22:08:05 Error: POP3(joe): mbox sync: UID inserted in the middle of mailbox /home/joe/Mail/INBOX (442671 > 80, seq=10, idx_msgs=153) dovecot: Mar 18 22:08:05 Info: POP3(joe): Disconnected: Logged out top=0/0, retr=153/1069109, del=153/153, size=1066449 The next POP3 connect will fetch most of the messages again. dovecot: Mar 18 22:18:48 Info: POP3(joe): Disconnected: Logged out top=0/0, retr=147/1006204, del=147/147, size=1003647 Is there a problem if an incoming message already contains an X-UID header? Might it be worthwhile to remove this header when mails are being delivered (e.g. with procmail)? Thanks, Adam -- Adam adam(a)os.inf.tu-dresden.de Lackorzynski http://os.inf.tu-dresden.de/~adam/

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[Dovecot] rc27 assert, mbox format
by Jeff A. Earickson 22 Mar '07

22 Mar '07

Timo, After several days of flawless work, rc27 gave an assert/core yesterday: Mar 19 00:10:46 karst dovecot: [ID 107833 mail.error] IMAP(user): file mbox-sync-rewrite.c: line 423: assertion failed: (need_space == (uoff_t)-mails[idx].space) Mar 19 00:10:46 karst dovecot: [ID 107833 mail.error] IMAP(user): Raw backtrace: 0x8a51c -> 0x473f4 -> 0x479b0 -> 0x41c50 -> 0x42430 -> 0x431d4 -> 0x43dac -> 0x44040 -> 0x2aa70 -> 0x2afec -> 0x2337c -> 0x23508 -> 0x235f0 -> 0x90c18 -> 0x9043c -> 0x2cfac -> 0x1dbe8 I could see nothing wrong with the user's mailbox, it was not corrupted. My setup: Solaris 10 sparc, mbox format, INBOX NFSv4 mounted from another S10 sparc system, no disk quotas, ZFS filesystem for both the INBOX filesystem and the user's home directory. Unfortunately, I compiled dovecot with Sun's cc compiler, so the gdb traceback is fairly useless. I need to go back to gcc. Jeff Earickson Colby College

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Re: [Dovecot] Dovecot 'suicide'
by John Andrea 21 Mar '07

21 Mar '07

>dovecot: Time just moved backwards by 6 seconds So this will show up when systems move from daylight savings time to standard time ? >As others mentioned, using ntpd avoids this problem entirely. Not entirely. If you need to restart ntpd, the time can jump when catching up with 'step-tickers'.

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[Dovecot] Double homedirs and tilde problems in case of chroot in passwd-file / static dbs.
by Michal Soltys 21 Mar '07

21 Mar '07

Recently I've made the post about "double homedir" problem, but I couldn't recreate it later. Here're the exact steps to make it happen (configuration is at the bottom): 1) set configuration as below with passwd-files 2) clean testms dir (not necessary though) 3) reload dovecot (HUP is enough) 4) access the server with any client using testms user (make sure no other user accesses server before you) - on the first access, dovecot will create /home/vmail/ppgk.com.pl/testms/Maildir under /home/vmail/ppgk.com.pl/testms/ - on every next access, dovecot will access (and create if it doesn't exist) proper Maildir under "single" home path Situation will repeat itself, if dovecot is reloaded (or killed and restarted). It happens to both imap and pop3. Note, that the a single access seems to be enough to "fix" the problem to all the other users in passwd-file, should there be any. The problem seems to be created by chroot specification in passwd-file & static (and possibly when other dbs are used). On the first access, dovecot attempts to recreate whole /home/vmail.... directory structure *after* chrooting to the homedir (or without taking earlier chroot into account), at least that's how it looks from ktrace. If I moved /./ to the left by one subdir, dovecot would attempt to do it under root owned /home/vmail/ppgk.com.pl/ and fail in the process. And so on. Tilde is another problem - if in dovecot.userdb I change - maildir:~/Maildir: to mbox:~/Mail:INBOX=~/inbox: - then single '~' directory will be created under /home/vmail/ppgk.com.pl/testms/, along the inbox file and Mail dir. If INBOX, CONTROL and/or INDEX is specified explicitely in maildir case, '~' won't be created. That leads to the questiom - is tilde allowed in INBOX under mbox storage at all ? I can't check '~' in INBOX/mbox case for system accounts atm though. If you need any more info (like ktrace), let me know. Configuration: openbsd 3.9, i386, dovecot 1.0-rc27 (no post rc27 diffs) dovecot.userdb: testms::10000:10000:Test,,,:/home/vmail/ppgk.com.pl/testms/./::userdb_mail=maildir:~/Maildir: dovecot.passdb: testms:{PLAIN}test: base_dir: /var/dovecot/ protocols: imap imaps pop3 pop3s ssl_listen: * ssl_ca_file: /etc/ssl/cert_bundle.pem ssl_cert_file: /etc/ssl/ca_ppgk/certs/fetch_crt.pem ssl_key_file: /etc/ssl/ca_ppgk/private/fetch_key.pem verbose_ssl: yes login_dir: /var/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_greeting: Dovecot IMAP server ready. login_greeting_capability(default): yes login_greeting_capability(imap): yes login_greeting_capability(pop3): no valid_chroot_dirs: /var/mail:/home/regular:/home/vmail verbose_proctitle: yes first_valid_uid: 1999 first_valid_gid: 10 mail_location: mbox:~/Mail:INBOX=/var/mail/%u mail_debug: yes fsync_disable: yes lock_method: fcntl maildir_copy_with_hardlinks: yes mbox_read_locks: fcntl mbox_write_locks: fcntl 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_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 imap_client_workarounds(default): outlook-idle delay-newmail imap_client_workarounds(imap): outlook-idle delay-newmail imap_client_workarounds(pop3): outlook-idle pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %08Xu%08Xv pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh auth default: mechanisms: plain login verbose: yes debug: yes passdb: driver: passwd-file args: /etc/dovecot.passdb passdb: driver: bsdauth userdb: driver: passwd-file args: /etc/dovecot.userdb userdb: driver: passwd socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix master:

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[Dovecot] Index files in .imap directory
by Steven F Siirila 21 Mar '07

21 Mar '07

A few RC releases ago we had a problem where a user's restored home directory contained a .imap folder either from a previous RC release or perhaps it was a different server. In any event, restoration of the user caused problems since Dovecot choked on the restored .imap index files. Removing those index files cleared the problem. I'm wondering if this is still an issue, and therefore whether we need to find and remove all .imap folders prior to archiving users, so that they are not restored with potentially old/bad index files. I would like to NOT have to worry about them, but rather have Dovecot be smart about when to simply re-create them if it detects something it does not like about them. -- Steven F. Siirila Office: Lind Hall, Room 130B Internet Services E-mail: sfs(a)umn.edu Office of Information Technology Voice: (612) 626-0244 University of Minnesota Fax: (612) 626-7593

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[Dovecot] Exceptions to MyNetworks
by chandler.lists＠chapman.edu 21 Mar '07

21 Mar '07

The mynetworks setting is defined here in CIDR notation. I'd like to make an exception for one of our (insecure) machines that shouldn't be allowed to relay through our box, and only attempt local delivery. What's the best way to do this?

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[Dovecot] connection refused
by Steven F Siirila 21 Mar '07

21 Mar '07

We have been increasing our user count and have only run across these errors so far (dovecot-1.0.rc27): Mar 18 02:50:14 myhost.mydomain dovecot: pop3-login: Can't connect to auth server at default: Connection refused Mar 18 04:07:13 myhost.mydomain dovecot: imap-login: Can't connect to auth server at default: Connection refused Mar 18 05:43:14 myhost.mydomain dovecot: pop3-login: Can't connect to auth server at default: Connection refused Mar 18 07:39:38 myhost.mydomain dovecot: imap-login: Can't connect to auth server at default: Connection refused Mar 18 07:58:44 myhost.mydomain dovecot: imap-login: Can't connect to auth server at default: Connection refused Mar 18 09:55:20 myhost.mydomain dovecot: imap-login: Can't connect to auth server at default: Connection refused I presume that the changes Timo made in response to my previous inquiry about refused connections at reboot will fix these. My question is: what do clients see when this situation arises? Is it transparent, or does the client/user end up having to re-connect? -- Steven F. Siirila Office: Lind Hall, Room 130B Internet Services E-mail: sfs(a)umn.edu Office of Information Technology Voice: (612) 626-0244 University of Minnesota Fax: (612) 626-7593

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[Dovecot] pop3 seems to be down sometimes
by Thomas Balsfulland 21 Mar '07

21 Mar '07

hello guys, i am using dovecot v1.0.rc15-1~bpo1 from backports.org on a debian sarge machine as pop3 pop3s imap and imaps server. since some days it seems the pop-server will stop randomly. noone is able get mails, but imap is still working. the logfile says: dovecot: 2007-03-19 16:44:19 Info: auth(default): password(user1(a)domain.de,212.100.55.y): Requested HMAC-MD5 scheme, but we have only MD5 dovecot: 2007-03-19 16:44:20 Info: pop3-login: Login: user=<user1(a)domain.de>, method=PLAIN, rip=212.100.55.y, lip=x.x.x.x, TLS dovecot: 2007-03-19 16:44:23 Info: POP3(user1(a)domain.de): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0 dovecot: 2007-03-19 16:44:24 Info: auth(default): password(user2(a)domain.de,212.100.55.y): Requested HMAC-MD5 scheme, but we have only MD5 dovecot: 2007-03-19 16:44:26 Info: pop3-login: Login: user=<user2(a)domain.de>, method=PLAIN, rip=212.100.55.y, lip=x.x.x.x, TLS dovecot: 2007-03-19 16:44:29 Info: POP3(user2(a)domain.de): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0 dovecot: 2007-03-19 16:47:09 Info: pop3-login: Disconnected: Inactivity: rip=84.181.7.y, lip=x.x.x.x dovecot: 2007-03-19 16:48:51 Info: pop3-login: Disconnected: Inactivity: rip=84.135.196.y, lip=x.x.x.x dovecot: 2007-03-19 16:49:51 Info: pop3-login: Disconnected: Inactivity: rip=84.135.196.y, lip=x.x.x.x dovecot: 2007-03-19 16:50:36 Info: pop3-login: Disconnected: Inactivity: rip=212.100.55.y, lip=x.x.x.x dovecot: 2007-03-19 16:50:51 Info: pop3-login: Disconnected: Inactivity: rip=84.135.196.y, lip=x.x.x.x dovecot: 2007-03-19 16:50:52 Info: pop3-login: Disconnected: Inactivity: rip=84.181.7.y, lip=x.x.x.x dovecot: 2007-03-19 18:06:58 Info: imap-login: Disconnected: rip=195.71.y.z, lip=x.x.x.x, TLS dovecot: 2007-03-19 18:06:58 Info: IMAP(user3): Disconnected: Logged out dovecot: 2007-03-19 18:08:12 Info: pop3-login: Disconnected: Inactivity: rip=84.181.80.y, lip=x.x.x.x dovecot: 2007-03-19 18:08:31 Info: pop3-login: Disconnected: Inactivity: rip=84.135.196.y, lip=x.x.x.x dovecot: 2007-03-19 18:09:02 Info: pop3-login: Disconnected: Inactivity: rip=212.100.55.y, lip=x.x.x.x i dont know when and why this problem occurs. here is my config: protocols = imaps imap pop3s pop3 protocol imap { listen = 127.0.0.1 ssl_listen = x.x.x.x } protocol pop3 { listen = x.x.x.x ssl_listen = x.x.x.x } disable_plaintext_auth = no log_path = /var/log/dovecot.log info_log_path = /var/log/dovecot.log log_timestamp = "%Y-%m-%d %H:%M:%S " ssl_disable = no ssl_cert_file = /etc/ssl/certs/dovecot.pem ssl_key_file = /etc/ssl/private/dovecot.pem mail_location = mbox:/home/vmail/%d/%n:INBOX=/home/vmail/%d/%n:INDEX=/home/vmail/index/%u protocol imap { mail_plugins = quota imap_quota imap_client_workarounds = outlook-idle delay-newmail } protocol pop3 { pop3_uidl_format = %08Xu%08Xv pop3_client_workarounds = outlook-no-nuls oe-ns-eoh } auth_verbose = yes auth default { mechanisms = plain digest-md5 cram-md5 passdb passwd-file { args = /etc/dovecot/mailuser } userdb passwd-file { args = /etc/dovecot/mailuser } user = root } are there any ideas? regards thomas -- thomas balsfulland tbals(a)ctrl-c.de zwischen mut und dummheit liegt nur ein grat der sich durch das vorbereitetsein unterscheidet

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Re: [Dovecot] [Re: Dovecot - with LDAP auth backend]
by Shahmat Dahlan 21 Mar '07

21 Mar '07

Hi Timo, What I did actually was change option (D) to the following below, or do I have to remove this one altogether? plugin { quota = maildir } Then added the attribute mailquota=10240 as I had defined in my dovecot schema And when I did a tried to run getquota "" or getquotaroot inbox (via telnet localhost 143), it would return me a "no quota" message. What I am able deduce is that the mailquota attribute did not take effect at all. Do you think I may have missed something out. And thanks for your prompt reply, really appreciate it. Regards Date: Mon, 19 Mar 2007 14:41:16 +0200 From: Timo Sirainen <tss(a)iki.fi> Subject: Re: [Dovecot] Dovecot - with LDAP auth backend To: Dovecot Mailing List <dovecot(a)dovecot.org> Message-ID: <33A1EA34-1CDD-4924-906C-6D47F1354382(a)iki.fi> Content-Type: text/plain; charset="us-ascii" On 19.3.2007, at 10.57, Shahmat Dahlan wrote: > > (D) also in my /etc/dovecot.conf > > plugin { > > quota = maildir:storage=10240 > > } > This is used only as long as it's not overridden by userdb. > > (E) in my /etc/dovecot-ldap.conf > > user_attrs = > > homeDirectory=home,uidNumber=uid,gidNumber=gid,mailquota=quota > Here you override it. See the LDAP example at the bottom of http://wiki.dovecot.org/Quota Date: Mon, 19 Mar 2007 16:57:48 +0800 From: Shahmat Dahlan <shahmatd(a)sains.com.my> Subject: [Dovecot] Dovecot - with LDAP auth backend To: dovecot(a)dovecot.org Message-ID: <45FE508C.8070305(a)sains.com.my> Content-Type: text/plain; charset="iso-8859-1" I have the following installed (1) CentOS 2.6.9-42.ELsmp (2) dovecot-1.0-3_50.rc27.el4.at, (3) openldap-2.2.13-6.4E (A) I have added the following schema into /etc/openldap/schema attributetype ( 1.3.6.1.4.1.14237.1.1.1.1 NAME 'mailquota' DESC 'The size of space the user can have until further messages get bounced.' EQUALITY integerMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE ) objectclass ( 1.3.6.1.4.1.14237.1.1.2.1 NAME 'DovecotUser' DESC 'Dovecot-LDAP User' SUP top AUXILIARY MUST ( cn $ uid $ mail $ mailquota $ userPassword ) MAY ( sn ) ) (B) and added this into my /etc/openldap/slapd.conf include /etc/openldap/schema/dovecot.schema (C) And in my /etc/dovecot.conf, this is what I have protocol imap { mail_plugins = quota imap_quota mail_plugin_dir = /usr/lib/dovecot/imap } (D) also in my /etc/dovecot.conf plugin { quota = maildir:storage=10240 } (E) in my /etc/dovecot-ldap.conf user_attrs = homeDirectory=home,uidNumber=uid,gidNumber=gid,mailquota=quota user_filter = (&(objectClass=DovecotUser)(uid=%u)) pass_attrs = uid=user,userPassword=password Scenario 1 I have (D) set to quota = maildir:storage=10240, did a telnet localhost 143, and logged in, this is what I get Trying 127.0.0.1... Connected to localhost.localdomain (127.0.0.1). Escape character is '^]'. * OK Mail ready a1 login ldapuser password a1 OK Logged in. a2 getquota "" * QUOTA "" (STORAGE 0 10240) a2 OK Getquota completed. if I were to change (D) to quota = maildir And added in an attribute called "mailquota" in the entry uid=ldapuser,dc=mydomain,dc=com, give it a value 10240000 (is this correct? should it by in bytes or in kilobytes?), then reinitialize the mailbox by deleting the ~/Maildir directory (or in this case /home/ldapuser/Maildir) Did the telnet localhost 143, this is what I get instead Trying 127.0.0.1... Connected to localhost.localdomain (127.0.0.1). Escape character is '^]'. * OK Mail ready a1 login ldapuser password a1 OK Logged in. a2 getquota "" * QUOTA "" () a2 OK Getquota completed. Even after I've added the attribute mailquota in the ldap for the entry uid=ldapuser it still does not look like its taking any effect at all. Regards and thanks in advance.

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[Dovecot] dovecot + ldap
by aza zel 21 Mar '07

21 Mar '07

hi... i want to know how schema dovecot uses to use with ldap -- Salu2 ;)

3 2

[Dovecot] invalid mbox
by Marc Lucke 21 Mar '07

21 Mar '07

dovecot-1.0-1.1.rc15.fc6 When I attempt to drag spam from one IMAP box to another it tells me that I have an invalid mbox format for some emails. Occasionally too when I click on that email box it gives me the same error. uw-imapd never gave me those problems. I use Thunderbird 1.5.0.10 and have the same problem on Windoze XP and MacOSX. Can I and how do I solve this problem? Marc

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[Dovecot] lock file on embedded device
by burolib 21 Mar '07

21 Mar '07

Hi. That's my first post. it's driving me crazy. I'm trying to get dovecot working with vpopmail on Openwrt, an embedded linux-like OS for some routers . So actually my aim looks like get dovecot working with little hardware resources (32 MB of Ram, 8 MB of disk mem.) I've cross compiled it well(it looks like). the login against vpopmail works. using mmap it cannot even select the inbox, the log says: Error: IMAP(test(a)fabri-fibra.org): file_dotlock_create() failed with file /home/vpopmail/domains/mydomain.org/test/Maildir/dovecot.index.log: No such file or directory And an impressive Kernel page fault: Mar 21 17:38:48 (none) kern.alert kernel: Unable to handle kernel paging request at virtual address 00000008, epc == 8004cce8, ra == 8004cc34 Mar 21 17:38:48 (none) kern.warn kernel: Oops in fault.c::do_page_fault, line 206: etc etc... even this error: Mar 21 17:38:48 (none) kern.crit kernel: ASSERTION FAILED: file->f_dentry != NULL at aux.c:120 (check_mini_fo_file) With mmap disabled i can select the inbox and read/write just the first time since any new attempt get stucked because the file dovecot-uidlist.lock was not removed. more details: dovecot: Mar 21 17:13:34 Warning: IMAP(test(a)fabri-fibra.org): Our dotlock file /home/vpopmail/domains/mydomain.org/test/Maildir/dovecot-uidlist.lock was overridden (kept it 0 secs) By the way my file system is a jffs, and my disk has 500K left. I will appreciate any tips. Fabrizio. ------------------------------------------------------ Con Prometeo prestiti senza spese fino a 31.000 Euro! Clicca qui http://click.libero.it/webnation21m07

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[Dovecot] Adding ", S=size" to new message files when using "dirsize"
by Rich, Whidbey Telecom 21 Mar '07

21 Mar '07

When APPENDing new message files to an IMAP Maildir, Dovecot 1.0 rc27 can be configured to add ",S=size" to the filename. That allows it to be calculated with the "dirsize" quota plugin (and MTA's such as Exim). However, Dovecot only seems to do that when the "maildir" quota plugin is specified (from "quota-maildir.c"): /* For newly generated filenames add ,S=size. */ storage->save_size_in_filename = TRUE; Shouldn't "save_size_in_filename" be included in "quota-dirsize.c", since "dirsize" is the one that actually needs "S="? Maybe I'm missing something? Here're some relevant parts of our test config: -- mail_location = maildir:/var/mail/%u/Maildir:INDEX=MEMORY maildir_copy_with_hardlinks = yes maildir_copy_preserve_filename = yes protocol imap { mail_executable = /usr/local/libexec/dovecot/rawlog /usr/local/ libexec/dovecot/imap mail_plugins = quota imap_quota imap_client_workarounds = delay-newmail outlook-idle } plugin { quota = dirsize:storage=10240 } -- Thanks! Rich

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[Dovecot] Thanks!
by Kyle Wheeler 21 Mar '07

21 Mar '07

Hello, I just recently switched my system from a BincIMAP/vpopmail to a Dovecot/vpopmail system, and I have to say: thanks! There were really only two things I had to patch Dovecot to do: first, provide statistics on network usage, and second, to allow folders to be LIST'd/SELECT'd/etc. with a trailing separator (to satisfy my pine users). If anyone's interested, I can generate a patch for that stuff. Other than that, it's been a real breeze. Dovecot is really simple to configure, and is faaaaaaaast! We have a kind of a wonky setup (multiple domains, multiple SSL keys, etc.) and Dovecot hasn't gotten mad even once. Timo, thanks a bunch, it's an excellent piece of software. ~Kyle -- Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so. -- Douglas Adams

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[Dovecot] The perfect Courier -> Dovecot conversion tool
by Timo Sirainen 21 Mar '07

21 Mar '07

I've tested this only with a test user. http://dovecot.org/tools/courier-dovecot-migrate.pl http://wiki.dovecot.org/Migration/Courier # Migrate Courier IMAP (any version) and Courier POP3 (v0.43+) to Dovecot v1.0 # by Timo Sirainen. This is public domain. # Usage: [--quiet] [--convert] [--overwrite] [--recursive] [<conversion path>] # --quiet: Print only errors # --convert: Do the actual conversion. Without this it only shows if it works. # --overwrite: Ovewrite dovecot-uidlist file even if it exists already. # --recursive: Recursively find maildirs to convert # <conversion path>: Maildir directory, or with --recursive its parent # directory or its parent's parent # - If courierpop3dsizelist is found, it makes its best effort to keep the # POP3 UIDLs, unless the file is more than 30 days older than # courierimapuiddb (user probably stopped using POP3). # - If courierpop3dsizelist isn't found (or it's old), the dovecot-uidlist # is directly converted keeping all the UIDs. # - Keywords are converted from courierimapkeywords/ to maildir filename # flags and dovecot-keywords file # - Subscriptions from courierimapsubscribed are added to Dovecot's # subscriptions file

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[Dovecot] Anonymous edits enabled again in Wiki
by Timo Sirainen 21 Mar '07

21 Mar '07

With a captcha. You need to write "Dovecot" to the captcha field if you're not registered. Lets see if this is enough to confuse the spam bots. http://dovecot.org/tmp/moin-captcha.diff if someone wants to see the changes it required to MoinMoin.

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Re: [Dovecot] Best way to migrate from Qpopper to Dovecot
by David Robillard 20 Mar '07

20 Mar '07

> we did nearly the same procedure the last time we switched from an old > Qpopper maschine to a new Qpopper maschine. > The last time we had not so much users (maybe 16000), not so much data > (round about 20Gigs) and there was no need of conversion. > This time we have new DNS-Names, new environment (Dovecot) and so on. That should not pose any real problems :) > So David, may I ask you how long did it take to convert the data? We used a cross-link cable between the two machines to transfer the data over their gigabit link. Both systems had three 10k rpm SCSI disks in hardware RAID 5 which pushed data at around 20 mb/s. That took around 20 minutes. Now for the migration script, that took about 1:30 hours to run on a single Intel Xeon 2.80GHz. Cheers, David -- David Robillard UNIX systems administrator & Oracle DBA CISSP, RHCE & Sun Certified Security Administrator Montreal: +1 514 966 0122

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[Dovecot] a <blush> build/install question
by Stewart Dean 20 Mar '07

20 Mar '07

This is probably an idiot (and certainly so basic as to be non-Dovecot) question, but I have been chasing my tail for a day or so on it, so I will, with humiliation, ask for guidance on it. Some time back I had asked if dovecot had to have a whole build tree of stuff to run or if any upgrade could be limited to just the executable and some libraries. I was told the latter, and given this list: dovecot (the executable) dovecot.conf libexec/imap libexec/imap-login libexec/dovecot-auth I had wanted to structure my build and install work so that, when update came out, I could build into a directory that was stamped with the time and version and ssl inclusion status. Every time I built I would create a new directory, and I would be able to everything to fall back with, in the old directories. Being that this is production, I wanted to be able to uplevel (or fall back) quickly. I should say I build on a build machine, since I don't want to have a compiler on the production machines; I specified the stamped unique name of this build directory du jour using the --prefix confiigure parm The configure, make and make install steps all go fine. Now I have to transfer those five files over to the target production machine, where I had planned to reference these essential DC files, dovecot itself, dovecot.conf, etc through links, like this: (while resident in the build directory which has been NFS imported onto the production target machine) > cp -p ./sbin/dovecot /usr/sbin/$buildver.dovecot > ln -sf /usr/sbin/$buildver.dovecot /usr/sbin/dovecot > > cp -p ./etc/dovecot-example.conf /etc/dovecot-example.$buildver.conf > > cp -p ./libexec/dovecot/imap /usr/libexec/$buildver.imap > ln -sf /usr/libexec/$buildver.imap /usr/libexec/imap > > cp -p ./libexec/dovecot/imap-login /usr/libexec/$buildver.imap-login > ln -sf /usr/libexec/$buildver.imap-login /usr/libexec/imap-login > > cp -p ./libexec/dovecot/dovecot-auth /usr/libexec/$buildver.dovecot-auth > ln -sf /usr/libexec/$buildver.dovecot-au Alas, when I actually tried to run dovecot, it was asking for its resource /in the original build tree/ location, which wasn't there. Is there some way I can do what I want? It seems like I could run the configure without the --prefix parm and have these five files end up in the standard place, but then you would always be building in the same place. I would rather have them in a sheaf of unique build trees so there was never any confusion as to where an edition of them came from...one could always reference back to the unique build tree and do a sum on them. -- ==== Stewart Dean, Unix System Admin, Henderson Computer Resources Center of Bard College, Annandale-on-Hudson, New York 12504 sdean(a)bard.edu voice: 845-758-7475, fax: 845-758-7035

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Re: [Dovecot] Best way to migrate from Qpopper to Dovecot
by David Robillard 20 Mar '07

20 Mar '07

> Hi List, > > what do you think is the best way to migrate (to a new maschine) round about > 30000 mboxes (Qpopper) with an amount of 43Gigs data, to maildir format > (Dovecot). > I think there are two ways: > > 1. > - stop services (smtp and pop3) on the old maschine > - copy the mboxes to the new maschine > - run a conversion script (for excample: "Perfect_maildir" > http://perfectmaildir.home-dn.net/) > - start the services on the new maschine (smtp and Dovecot) > > 2. > - tell the users to use the new server (from the day X) with the new feature > (imap) > - stop the smtp on the old maschine on day X > - leave the old maschine active for a month or so (let users get their "old" > mail) > > With the first alternative we have a high downtime, because of copying the > mboxes and converting the stuff. > > What do you think? Hello Torsten, We switched our 3500+ users from Qpopper to Dovecot last week-end. We had around 27Gb of data to migrate. We had a maintenance window in which we could stop the POP services, so it was quite easy to do. Even if we changed hardware, we kept the old name and IP so that we had no DNS changes to do. Clean and simple. Here's how we've done things on FreeBSD 6.2-RELEASE-p2 -- Shutdown qpopper POP services on the old machine. -- Create a tar and transfered it to the new machine. Acutally, this was a single step in which we used a pipe to send that tar STDOUT into ssh's STDIN. -- Import /etc/master.passwd and /etc/group from the old system into the new machine. -- Run a simple shell script to change from mbox format to Maildir using mb2md and set permissions. -- Exchange FQDN and IP between to old machine and the new one in order to prevent any DNS changes. -- Start Dovecot and your MTA on the new machine. Concerning your desire to move your user's Maildir into /var/mail/first_letter_of_username/username. It should be trivial to do using a simple /bin/sh script. Have fun ! David -- David Robillard UNIX systems administrator & Oracle DBA CISSP, RHCE & Sun Certified Security Administrator Montreal: +1 514 966 0122

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[Dovecot] Sieve: Conversion script for procmail recipes.
by Stephen Usher 20 Mar '07

20 Mar '07

Seeing as many on this list are in the process of migrating their mailsystems not only to dovecot's IMAP/POP3 server but also using dovecot's deliver for delivering e-mail into users' folders I thought that it might be a good idea to share with you the perl script I've been labouring upon for the last few days which will translate a simple(ish) procmail recipe to an equivalent Dovecot-Sieve script. (It handles vacation pipes as well, by the way.) It may even be useful as a basis for a more fully featured translator, who knows. Whatever, if it could be put on the Wiki no doubt it will prevent the wheel being re-invented time and again. The script can be found at the following URL: http://www.earth.ox.ac.uk/~steve/sieve/procmail2sieve.pl It might be worth putting it in a contrib directory in the dovecot-sieve distribution. Steve -- --------------------------------------------------------------------------- Computer Systems Administrator, E-Mail:-steve@earth.ox.ac.uk Department of Earth Sciences, Tel:- +44 (0)1865 282110 University of Oxford, Parks Road, Oxford, UK. Fax:- +44 (0)1865 272072

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[Dovecot] Outlook client timeouts on sending mail
by J Moore 20 Mar '07

20 Mar '07

This may be a sendmail question, but I thought I'd ask here first: I set up an Outlook client to use secure IMAP and secure SMTP. When sending a message, the client typically times out once or twice and presents an error message indicating the server isn't configured for secure delivery. With a little persistence, Outlook eventually makes a successful connection, and the message goes on its way (2-3 tries). Any pointers as to where to look for the problem? Thanks, Jay

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[Dovecot] Best way to migrate from Qpopper to Dovecot
by Torsten 20 Mar '07

20 Mar '07

Hi List, what do you think is the best way to migrate (to a new maschine) round about 30000 mboxes (Qpopper) with an amount of 43Gigs data, to maildir format (Dovecot). I think there are two ways: 1. - stop services (smtp and pop3) on the old maschine - copy the mboxes to the new maschine - run a conversion script (for excample: "Perfect_maildir" http://perfectmaildir.home-dn.net/) - start the services on the new maschine (smtp and Dovecot) 2. - tell the users to use the new server (from the day X) with the new feature (imap) - stop the smtp on the old maschine on day X - leave the old maschine active for a month or so (let users get their "old" mail) With the first alternative we have a high downtime, because of copying the mboxes and converting the stuff. What do you think? Thanks Torsten

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[Dovecot] RHEL5 and dovecot version
by Oliver Schulze L. 20 Mar '07

20 Mar '07

RedHat Enterprise 5 is released! And dovecot 1.0rc15 is included! :) http://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/dovec… I wonder what the RH patches are, downloading ... HTH Oliver -- Oliver Schulze L. | Get my e-mail after a captcha in: Asuncion - Paraguay | http://tinymailto.com/oliver

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[Dovecot] userdb static and doubled homedir problem
by Michal Soltys 20 Mar '07

20 Mar '07

With following configuration: userdb static { args = uid=10000 gid=10000 home=/home/vmail/domain.tld/%u/./ mail=maildir:~/maildirs } and accompanying passdb passwd-file consisting of only user and password, for example test:{PLAIN}test: dovecot will access home=/home/vmail/domain.tld/test/home/vmail/domain.tld/test/maildirs instead of home=/home/vmail/domain.tld/test/maildirs dovecot 1.0rc27 (+ flock and convert plugin diffs), openbsd 3.9, i386 any extra info (ktrace, etc.) - if needed dovecot -n: base_dir: /var/dovecot/ protocols: imap imaps pop3 pop3s ssl_listen: * ssl_ca_file: /etc/ssl/cert_bundle.pem ssl_cert_file: /etc/ssl/ca_ppgk/certs/fetch_crt.pem ssl_key_file: /etc/ssl/ca_ppgk/private/fetch_key.pem verbose_ssl: yes login_dir: /var/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_greeting: Dovecot IMAP server ready. login_greeting_capability(default): yes login_greeting_capability(imap): yes login_greeting_capability(pop3): no valid_chroot_dirs: /var/mail:/home/regular:/home/vmail verbose_proctitle: yes first_valid_uid: 1999 first_valid_gid: 10 mail_location: mbox:~/Mail:INBOX=/var/mail/%u mail_debug: yes fsync_disable: yes lock_method: flock maildir_copy_with_hardlinks: yes mbox_read_locks: flock mbox_write_locks: flock 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_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 imap_client_workarounds(default): outlook-idle delay-newmail imap_client_workarounds(imap): outlook-idle delay-newmail imap_client_workarounds(pop3): outlook-idle pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %08Xu%08Xv pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh auth default: mechanisms: plain login verbose: yes debug: yes passdb: driver: passwd-file args: /etc/dovecot.passwd passdb: driver: bsdauth userdb: driver: static args: uid=10000 gid=10000 home=/home/vmail/domain.tld/%u/./ mail=maildir:~/maildirs userdb: driver: passwd socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix master:

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[Dovecot] Courier's courierpop3dsizelist - uid convert
by Marcin Gryszkalis 19 Mar '07

19 Mar '07

Hi Migration page [1] on wiki says "Courier version 3 (younger versions) Here everything has changed: Courier's UID data are now stored in courierpop3dsizelistand in a completely new format. But it's still possible to convert it to the format dovecot needs (link to perlscript and further configuration details will follow later). " but there's nothing more. I couldn't find any ready to use script for the conversion. Maybe somebody has it ready or could help me, I can write perl oneliner but I don't understand the format of index files. dovecot's is like this 1 1174291188 518 1 1174181234.P58178Q0M660793.sas.xxx.xxx.xx:2, 2 1174286738.P16096Q0M408737.sas.xxx.xxx.xx:2, courierpop3dsizelistand is like this /2 703 1105349624 1135668673.V41dI2c3c85.sas.xxx.xxx.xx:2,S 12176 184:1105349624 1135766433.V41dI2c3c95.sas.xxx.xxx.xx:2,S 170450 185:1105349624 I understand every line starts with mail filename, but I don't understand latter values. I'm also not sure about first line of dovecot's file. Any help would be appreciated :) greetings marcin [1] http://wiki.dovecot.org/Migration -- Marcin Gryszkalis, PGP 0x9F183FA3 jabber jid:mg@fork.pl, gg:2532994 http://the.fork.pl

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[Dovecot] Dovecot 'suicide'
by Luigi Rosa 19 Mar '07

19 Mar '07

I have a Dovecot installation on a Fedora 4. With the last update from Dovecot RC10 to Dovecot RC27, the daemon kills itself every night with this error: Mar 17 05:23:11 mail dovecot: Time just moved backwards by 6 seconds. This might cause a lot of problems, so I'll just kill m yself now. The error appears just after the night maintenance script executes a ntpdate syncronization ntpdate is version 4.2.0a(a)1.1196-r Well, 6 seconds are little more than a blink in human perspective, even if it is a long time for a computer point of view. Couldn't be possible to add a configuration option to avoid the suicide? Any other option other than suicide is better, because there could be situations of really unattended servers. Ciao, luigi -- / +--[Luigi Rosa]-- \ She was a lovely girl. Our courtship was fast and furious. I was fast and she was furious. --Max Kauffmann

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[Dovecot] Changed CONTROL= path causes POP3 to fail, whereas IMAP is working (rc25 & rc26)
by Steffen Kaiser 19 Mar '07

19 Mar '07

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, I'm testing some configurations, in the process I used a wrong user setting causing POP3 (get new messages) to fail, whereas IMAP was still working. An easy fix was to remove the entire /var/cache/dovecot/1012/ directory, both index and index/control were re-created and do work. So my guess is that the existance of the indexes causes some trouble when just the control information is missing. Here is what I had done: The mailbox of "dvtest" was fully working with the correct setting from the config file: mail=maildir:/home/dvtest/MailDir:INDEX=/var/cache/dovecot/1012/index:CONTROL=/var/cache/dovecot/1012/control (no "/index" in the CONTROL= part). Then I created a LDAP entry for the user dvtest wrongly: mail=maildir:/home/dvtestMAIL/MailDir:INDEX=/var/cache/dovecot/1012/index:CONTROL=/var/cache/dovecot/1012/index/control The CONTROL= ended in "/index/control" rather than just "/control". (Note: I also mv'ed /home/dvtest to /home/dvtestMAIL in order to see, whether the LDAP attribute is getting used.) Afterwards IMAP is working, but POP3 returns "Couldn't init INBOX: Unknown error"; Thunderbird displays the error: "The STAT command did not succeed. Error getting message number and sizes. Mail server ux-2s11-9 responded: Couldn't sync mailbox." When I correct the LDAP attribute, hence the CONTROL= path ends in "1012/control" again. The mailbox is working with POP3 again. The INBOX of the erroreous control path does not contain any dovecot-* files? The message I deleted and expunged (see logs) were from the INBOX. /var/cache/dovecot/1012/index/control# lr .: total 16 drwx------ 4 dvtest Debian-exim 4096 2007-03-07 09:36 ./ drwx------ 12 dvtest dvtest 4096 2007-03-07 09:34 ../ drwx------ 2 dvtest Debian-exim 4096 2007-03-07 09:36 .Addresses/ drwx------ 2 dvtest Debian-exim 4096 2007-03-07 09:35 .INBOX/ ./.Addresses: total 24 drwx------ 2 dvtest Debian-exim 4096 2007-03-07 09:36 ./ drwx------ 4 dvtest Debian-exim 4096 2007-03-07 09:36 ../ - -rw------- 1 dvtest Debian-exim 12756 2007-03-07 09:36 dovecot-uidlist ./.INBOX: total 8 drwx------ 2 dvtest Debian-exim 4096 2007-03-07 09:35 ./ drwx------ 4 dvtest Debian-exim 4096 2007-03-07 09:36 ../ The attached file contains the full log of a session POP3 (get new messages), IMAP, expunge in INBOX, POP3 again. I also selected the mailbox Adresses once, to see if it is working. === # dovecot --version 1.0.rc26 # dovecot -n # /usr/local/dovecot.rc26/etc/dovecot.conf log_path: /var/log/dovecot/dovecot.log protocols: imap imaps pop3 pop3s ssl_ca_file: /etc/ssl/certs/ca.crt ssl_cert_file(default): /etc/ssl/certs/imap.pem ssl_cert_file(imap): /etc/ssl/certs/imap.pem ssl_cert_file(pop3): /etc/ssl/certs/pop3.pem ssl_key_file(default): /etc/ssl/private/imap.key ssl_key_file(imap): /etc/ssl/private/imap.key ssl_key_file(pop3): /etc/ssl/private/pop3.key disable_plaintext_auth: no verbose_ssl: yes login_dir: /usr/local/dovecot.rc26/var/run/dovecot/login login_executable(default): /usr/local/dovecot.rc26/libexec/dovecot/imap-login login_executable(imap): /usr/local/dovecot.rc26/libexec/dovecot/imap-login login_executable(pop3): /usr/local/dovecot.rc26/libexec/dovecot/pop3-login login_log_format_elements: %p: user=<%u> method=%m rip=%r lip=%l %c verbose_proctitle: yes first_valid_uid: 1000 mail_location: maildir:%h/MailDir:CONTROL=/var/cache/dovecot/%i/control:INDEX=/var/cache/dovecot/%i/index mail_debug: yes dotlock_use_excl: yes maildir_copy_with_hardlinks: yes maildir_copy_preserve_filename: yes mail_drop_priv_before_exec: yes mail_executable(default): /usr/local/dovecot.rc26/libexec/dovecot/imap mail_executable(imap): /usr/local/dovecot.rc26/libexec/dovecot/imap mail_executable(pop3): /usr/local/dovecot.rc26/libexec/dovecot/pop3 mail_plugins(default): quota imap_quota mail_log zlib mail_plugins(imap): quota imap_quota mail_log zlib mail_plugins(pop3): quota mail_log mail_plugin_dir(default): /usr/local/dovecot.rc26/lib/dovecot/imap mail_plugin_dir(imap): /usr/local/dovecot.rc26/lib/dovecot/imap mail_plugin_dir(pop3): /usr/local/dovecot.rc26/lib/dovecot/pop3 mail_log_prefix: %Us(%u) [%p]: mail_log_max_lines_per_sec: 30 pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %u pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): oe-ns-eoh namespace: type: private separator: . inbox: yes hidden: yes auth default: mechanisms: plain login cache_size: 10 username_chars: abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890 verbose: yes debug: yes debug_passwords: yes passdb: driver: ldap args: /usr/local/dovecot.rc25/etc/dovecot-ldap.conf passdb: driver: pam args: cache_key=%u session=yes dovecot userdb: driver: prefetch userdb: driver: ldap args: /usr/local/dovecot.rc25/etc/dovecot-ldap.conf userdb: driver: passwd socket: type: listen client: path: /var/run/dovecot/auth-client mode: 432 master: path: /var/run/dovecot/auth-master mode: 432 group: mail plugin: quota: fs Bye, - -- Steffen Kaiser -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iQEVAwUBRe6BIS9SORjhbDpvAQJY0wf/YCDC/Np8RRcOOgm36NZDT0PpS28u17QK TDHsbrZqgeA6iPV0IXpIrAV3fficnCQLJ25saIpl5BQyD18Lsbw15SJiFSs9Igko LCuiQwX4JzybXfga4m9rf6pMR9be/yREsbBsAu8KagMYVUxzN1H01cJfNb86XKNw 7GeKahpYVIVR3y9PZf13x8gW16REeRt0andWHa9Dmqt//ygv+sSqngfN9tzp6keo CW13FLIZufnP6TeFwcBQF4KNh6HeZn3B7AYL4BRAqrMIVRgIIkgDD3TzfNIUHCwq GwqvTE/dquW2HEwtG00S/ZnG6WAf6WKzl9p32F1mihRMpYjsQj2uyg== =8cA5 -----END PGP SIGNATURE-----

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[Dovecot] Convert UW folders to Dovecot folders ?
by Frank Bonnet 19 Mar '07

19 Mar '07

Hello IMAP users here have a *lot* of folders living in their mailhub home directory Converting the INBOX doesn't seems to be a problem I've found scripts that do the job :-) But How to convert IMAP folders from UW format ( one file / folder ) to dovecot format which seems much more sophisticated. Does anyone has written such ( nice) utility ? Thanks a lot Frank

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[Dovecot] Dovecot - with LDAP auth backend
by Shahmat Dahlan 19 Mar '07

19 Mar '07

I have the following installed (1) CentOS 2.6.9-42.ELsmp (2) dovecot-1.0-3_50.rc27.el4.at, (3) openldap-2.2.13-6.4E (A) I have added the following schema into /etc/openldap/schema attributetype ( 1.3.6.1.4.1.14237.1.1.1.1 NAME 'mailquota' DESC 'The size of space the user can have until further messages get bounced.' EQUALITY integerMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.27 SINGLE-VALUE ) objectclass ( 1.3.6.1.4.1.14237.1.1.2.1 NAME 'DovecotUser' DESC 'Dovecot-LDAP User' SUP top AUXILIARY MUST ( cn $ uid $ mail $ mailquota $ userPassword ) MAY ( sn ) ) (B) and added this into my /etc/openldap/slapd.conf include /etc/openldap/schema/dovecot.schema (C) And in my /etc/dovecot.conf, this is what I have protocol imap { mail_plugins = quota imap_quota mail_plugin_dir = /usr/lib/dovecot/imap } (D) also in my /etc/dovecot.conf plugin { quota = maildir:storage=10240 } (E) in my /etc/dovecot-ldap.conf user_attrs = homeDirectory=home,uidNumber=uid,gidNumber=gid,mailquota=quota user_filter = (&(objectClass=DovecotUser)(uid=%u)) pass_attrs = uid=user,userPassword=password Scenario 1 I have (D) set to quota = maildir:storage=10240, did a telnet localhost 143, and logged in, this is what I get Trying 127.0.0.1... Connected to localhost.localdomain (127.0.0.1). Escape character is '^]'. * OK Mail ready a1 login ldapuser password a1 OK Logged in. a2 getquota "" * QUOTA "" (STORAGE 0 10240) a2 OK Getquota completed. if I were to change (D) to quota = maildir And added in an attribute called "mailquota" in the entry uid=ldapuser,dc=mydomain,dc=com, give it a value 10240000 (is this correct? should it by in bytes or in kilobytes?), then reinitialize the mailbox by deleting the ~/Maildir directory (or in this case /home/ldapuser/Maildir) Did the telnet localhost 143, this is what I get instead Trying 127.0.0.1... Connected to localhost.localdomain (127.0.0.1). Escape character is '^]'. * OK Mail ready a1 login ldapuser password a1 OK Logged in. a2 getquota "" * QUOTA "" () a2 OK Getquota completed. Even after I've added the attribute mailquota in the ldap for the entry uid=ldapuser it still does not look like its taking any effect at all. Regards and thanks in advance.

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[Dovecot] using sieve plugin
by Kendall Shaw 19 Mar '07

19 Mar '07

Hi, I have installed dovecot on ubuntu edgy linux by retrieving the source debian package, building and installing the package and then building and installing the sieve plugin. However, I get no log messages indicating errors and as far as I can tell, my .dovecot.sieve script is not being used. I have introduced a syntax error in the script and see no error message. In dovecot.conf I have: log_path = /var/log/dovecot.log invo_log_path = /var/log/dovecot.log protocol lda { module_dir = /usr/lib/dovecot/modules/lda mail_plugins = cmusieve log_path = /var/log/dovecot-deliver.log info_log_path = /var/log/dovecot-deliver.log } I am using exim with dovecot. I've tried using a .forward file (I'm the one user on the computer). Alternately, I've tried creating the dovecot_deliver "transport" in exim and changing the localuser router to use it. Still, I get no messages from deliver and no error messages from dovecot or exim. The file dovecot-deliver.log is not created. Do you have any suggestions that can help me get it working or to see why it is not working? Kendall

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[Dovecot] One user having reproducible IMAP issues
by Alex Boster 19 Mar '07

19 Mar '07

Dovecot version upgraded to 1.0r26 (did not fix problem). The server is a CentOS 4 x86 box. Using ext3 filesystem. Previous attempts to fix the issue have included simply moving aside the user's INBOX to recreating a new account from scratch. Sometimes the email behaves for a while, but within a day is not working again. In Mail.app (the user's usual mail client) the INBOX folder simply appears empty. mutt (run locally on the server) shows the messages there correctly. The problem is easily reproducible. Move /var/spool/mail/[username] to a backup file and remove all .imap directories for that user. Mail may work for a while, but will stop within 24 hours. The SquirrelMail message is: ERROR: The server couldn't find the message you requested. Most probably your message list was out of date and the message has been moved away or deleted (perhaps by another program accessing the same mailbox). Click here to return to INBOX dovecot -n : # /etc/dovecot.conf log_path: /var/log/dovecot.log info_log_path: /var/log/dovecot.debug.log 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 mail_location: mbox:~/mail:INBOX=/var/spool/mail/%u mail_full_filesystem_access: yes mail_executable(default): /usr/libexec/dovecot/rawlog /usr/libexec/ dovecot/imap mail_executable(imap): /usr/libexec/dovecot/rawlog /usr/libexec/ dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_plugin_dir(default): /usr/lib/dovecot/imap mail_plugin_dir(imap): /usr/lib/dovecot/imap mail_plugin_dir(pop3): /usr/lib/dovecot/pop3 auth default: mechanisms: plain login passdb: driver: pam args: dovecot userdb: driver: passwd Thanks! Alex

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[Dovecot] authenticating with LDAP and SSL
by Nathan Fiedler 19 Mar '07

19 Mar '07

I managed to configure Dovecot to use a local OpenLDAP server to authenticate clients, without using SSL. However, I would rather that LDAP is accessed using SSL, but I cannot get Dovecot to connect. All that I did was change "uris" to "ldaps://localhost", and this appears in the maillog: Mar 18 12:53:00 server dovecot: Dovecot v1.0.rc15 starting up Mar 18 12:53:01 server dovecot: auth(default): ldap_bind((null)) failed: Can't contact LDAP server Is there additional configuration that is needed for SSL? Note that I altered the slapd.conf file from not requiring SSL to requiring SSL when I changed the "uris" parameter. And, of course, accessing the directory using ldapsearch works just fine. It seems that there's only a problem when using SSL, but I don't know how to debug it. Thanks n

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[Dovecot] Kerberos
by forum 18 Mar '07

18 Mar '07

Hey all new to this crack Ok so i have setup kerosene on my server i run mutt and it goes off and gets kerberos key from server I have added teh gssapi to config file but when the key seams to want to authenticate off dovecot it fail anyone help me? Mutt is returning No authentication available Dovecot logs are returning: Mar 18 01:34:31 bandicoot dovecot: auth(default): gssapi(?,MYIPADDRESS): While acquiring service credentials: Miscellaneous failure Mar 18 01:34:31 bandicoot dovecot: auth(default): gssapi(?,MYIPADDRESS): While acquiring service credentials: No principal in keytab matches desired name Mar 18 01:34:34 bandicoot dovecot: imap-login: Aborted login: method=GSSAPI, rip=MYIPADDRESS, lip=MYIPADDRESS, TLS Thanks

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[Dovecot] 1.0.rc27 released
by Timo Sirainen 18 Mar '07

18 Mar '07

http://dovecot.org/releases/dovecot-1.0.rc27.tar.gz http://dovecot.org/releases/dovecot-1.0.rc27.tar.gz.sig A few new small features and lots of index/mbox fixes. I've been heavily stress testing this release, so I think it should be about perfect. :) I think the only thing still missing from v1.0 is documentation. There are some unwritten pages in the wiki, and I still haven't bothered to write the wiki -> doc/*.txt conversion script. The script will probably be pretty easy, but writing the docs can take a while. + mbox and index file code handles silently out of quota/disk space errors (maildir still has problems). They will give the user a "Not enough disk space" error instead of flooding the log file. + Added fsync_disable setting. + mail-log plugin: Log the mailbox name, except if it's INBOX + dovecot-auth: Added a lot more debug logging to passdbs and userdbs + dovecot-auth: Added %c variable which expands to "secured" with SSL/TLS/localhost. + dovecot-auth: Added %m variable which expands to auth mechanism name - maildir++ quota: With ignore=box setting the quota was still updated for the mailbox even though it was allowed to go over quota (but quota recalculation ignored the box). - Index file handling fixes - mbox syncing fixes - Wrong endianess index files still weren't silently rebuilt - IMAP quota plugin: GETQUOTAROOT returned the mailbox name wrong the namespace had a prefix or if its separator was non-default - IMAP: If client was appending multiple messages with MULTIAPPEND and LITERAL+ extensions and one of the appends failed, Dovecot treated the rest of the mail data as IMAP commands. - If mail was sent to client with sendfile() call, we could have hanged the connection. This could happen only if mails were saved with CR+LF linefeeds.

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Re: [Dovecot] Login processes and a new performance/security compromise [was: Re: pre-1.0.rc27: Index and mbox fixes]
by Bill Boebel 18 Mar '07

18 Mar '07

On Sat, March 17, 2007 10:51 pm, Timo Sirainen <tss(a)iki.fi> said: > Oh, and as for when the rewrite is in CVS, I'm not really sure. I'm > still wondering if I should put it there soon and make the release after > v1.0 be v2.0, or if I should first stabilize the current new CVS HEAD > features (which shouldn't take too long), do a v1.2 release and only > then put this code to CVS and make it v2.0.. I vote for first stabilizing the current new CVS HEAD, do a v1.1 release, and then put the ssl rewrite into CVS and plan to make that either v1.2 or v2.0. That way people will start banging on the new features in current CVS HEAD sooner. Bill

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[Dovecot] Connection closed by foreign host.
by tubauwe＠gmx.de 18 Mar '07

18 Mar '07

I installed dovecot on my system using the following configuration (in dovecot.conf): protocols = imap listen = * ssl_disable = yes login_user = nobody login_processes_count = 3 mail_extra_groups = nobody default_mail_env = maildir:/home/%u/Maildir auth default { mechanisms = plain passdb shadow { } userdb passwd { } user = root } After that I tested via telnet an got the message: Connection closed by foreign host. In the log-file I found the following lines: dovecot: Mar 12 22:49:18 Info: Dovecot v1.0.rc15 starting up dovecot: Mar 12 22:51:12 Info: imap-login: Login: user=<username>, method=PLAIN, rip=192.168.??.20, lip=192.168.??.3 dovecot: Mar 12 22:51:12 Error: setmntent(/etc/mtab) failed: No such file or directory dovecot: Mar 12 22:51:12 Error: child 616 (imap) killed with signal 11 Because I'm quite a newbie, I don't know what to do. Therefore I ask here for help. Thank you! -- "Feel free" - 5 GB Mailbox, 50 FreeSMS/Monat ... Jetzt GMX ProMail testen: www.gmx.net/de/go/mailfooter/promail-out

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[Dovecot] M-Box benchmark
by Maykel Moya 18 Mar '07

18 Mar '07

A friend of mine passed me this[1] cause I'm recommending him Dovecot. My personal experience is very different to the one in that benchmark. I will appreciate similar links from those of you who had benchmarked Dovecot against other IMAP servers. I'm conscious that my personal experience is far to be a objetive comparison. I switched from UW-Imap/Mbox to Dovecot/Maildir a box with 45k local users, 3.5MB/s sustained IMAP/POP traffic in work hours. The main performance gain is from mbox -> maildir switching. Anyway the users (and myself) "perceive" a good performance with the new setup. Regards, maykel [1] http://www.isode.com/whitepapers/mbox-benchmark.html

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