- dovecot - dovecot.org

[Dovecot] Configuration advices for a 50000 mailboxes server(s)
by Frank Bonnet 21 Apr '12

21 Apr '12

Hello I need some feedbacks advices of experienced admins I will have to setup in few monthes an email system for approx 50K "intensives" users. The only mandatory thing will be I must use HP proliant servers The operating system will be FreeBSD or Linux Thank you for any advices

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Re: [Dovecot] dovecot LDA with sendmail
by Joseph Tam 21 Apr '12

21 Apr '12

Hadi Salem <almarzuki2001(a)hotmail.com> writes: > Im configuring sendmail with dovecot for virtual users using > password file and file for user name. on centos. > > dovecot-1.0.7-7.el5 Maybe I can beat Charles Marcus to the punch and recommend you upgrade to the latest version, otherwise you'll run into bugs that have already been fixed. > Mdovecot, > P=/usr/libexec/dovecot/deliver, F=DFMPhnu9,S=EnvFromSMTP/HdrFromSMTP, > R=EnvToSMTP/HdrFromSMTP,T=DNS/RFC822/X-Unix,A=/usr/libexec/dovecot/deliver -d > $u > ... > Apr 19 20:52:13 host1 sendmail[22311]: q3JHqDAR022309: > to=<jamal(a)example.com>, ctladdr=<root(a)host1.bigmama.com> (0/0), > delay=00:00:00, xdelay=00:00:00, mailer=dovecot, pri=120292, relay=dovecot, > dsn=4.0.0, stat=Deferred: dovecot mailer (/usr/libexec/dovecot/deliver) exited > with EX_TEMPFAIL Is there any logs from deliver? If not, look at this page to configure logging http://wiki.dovecot.org/LDA That's your best chance at finding out the problem. I don't have virtual users, so I can't venture to say whether this is part of the problem. I know I had to fiddle with the mailer flags (you have "DFMPhnu9") to get my setup working, but I don't remember what I did or why. Try adding the "S" flag and see if that helps. Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] migrate 15K users to new domain name
by Jan-Frode Myklebust 21 Apr '12

21 Apr '12

I need to migrate 15K users to a new domain name, and plan to use "dsync mirror" in the transition phase. Could someone confirm that this should work: Before giving users access to new-domain do a first sync to get all the stale data over: for user in $old-domain; do dsync mirror $user@old-domain $user@new-domain done Configure sieve vacation filter to forward all messages from $user@old-domain to $user@new-domain, and notify sender of changed address. Give users access to both new-domain and old-domain, and do a final sync. for user in $old-domain; do dsync mirror $user@old-domain $user@new-domain dsync mirror $user@old-domain $user@new-domain # twice in case the first was slow drop all messages for $user@old-domain Leave notice message for $user@old-domain saying he should use new-domain done Wait a few weeks/months, and then drop all users@old-domain. Does this look sensible? -jf

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[Dovecot] mbox folders on-disc layout
by John Robinson 21 Apr '12

21 Apr '12

I'd like to change the on-disk layout for my mboxes from being ~/mail/foo/bar to ~/mail/foo.bar so that I can have folders containing both messages and subfolders, without having subfolders beginning with . and then having to do all the other fiddling with locations of index files etc. that goes along with LAYOUT=maildir++, and also leaving the filesystem layout looking sensible so my users see their mailboxes instead of the index and control files. Is this possible or do I need to patch something? (CentOS 6, dovecot 2.0.9) Cheers, John.

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[Dovecot] Error in logs indicating broken files
by Steve Campbell 20 Apr '12

20 Apr '12

Still new to dovecot, I'm seeing a couple of errors in my log file indicating corruption of index files. Error: Corrupted index cache file/home/xxxxxx/mail/.imap/sent-mail/dovecot.index.cache: Broken virtual size for mail UID 67: 1 Time(s) Error: FETCH [] for mailbox ~/mail/sent-mail UID 67 got too little data: 6203 vs 7478: 1 Time(s) This account is used by multiple users, but it is not a shared account (haven't set any of those up yet - still new to me), so I would expect corruption possibilities when multiple users modify the account folders in some manner. Until I get some experience under my belt and make this a truly "shared" account, is there any way to resolve the corruption of the files mentioned above? Maybe just delete them? thanks steve campbell

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[Dovecot] array code issue ?
by Tim Ruehsen 20 Apr '12

20 Apr '12

Hi, I just took a look into the dovecot 2.1 sources and just saw a possible issue in array.h. This code snippet as an example: #static inline void * #array_get_modifiable_i(struct array *array, unsigned int *count_r) #{ # *count_r = array->buffer->used / array->element_size; # return buffer_get_modifiable_data(array->buffer, NULL); #} array->buffer->used and array->element_size are of type 'size_t' which is 64bit on amd64 and others while 'count_r' is a 32bit value. At least, I see ugly warnings with -Wconversion (which I personally like to use). I know, it is unlikely that 'array->buffer->used / array->element_size' exceeds 32bit range. But then, dovecot's source is so well written, that the above code seems to disturb dovecot's code aesthetics. And who knows... in a few years (when we have THz and TBytes on our desktops) emails (and array sizes) might exceed everything that we think of today. Tim

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[Dovecot] dbox vs. mdbox
by Douglas Mortensen 20 Apr '12

20 Apr '12

What are the pros and cons of both? Especially in regards to performance, stability, management & maintenance? I really appreciate feedback. We're on a time-crunch to migrate from a debian 5 box w/ dovecot 1.1 to a debian 6 box w/ dovecot 2.0.9 (built from source). Thanks, - Doug Mortensen Network Consultant Impala Networks Inc CCNA, MCSA, Security+, A+ Linux+, Network+, Server+ . www.impalanetworks.com P: (505) 327-7300 F: (505) 327-7545

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[Dovecot] Fwd: IMAP SSL incoming test need help !
by Dennis Chen 20 Apr '12

20 Apr '12

Sent from my iPhone Begin forwarded message: > From: D Chen <dchenusa(a)yahoo.com> > Date: April 19, 2012 4:06:49 PM PDT > To: lists-dovecot <replies-lists-a1z2-dovecot(a)listmail.innovate.net> > Subject: Re: [Dovecot] IMAP SSL incoming test need help ! > Reply-To: D Chen <dchenusa(a)yahoo.com> > > Thanks for nice pointing out in my mail.log! > > I could not find where is the procmail log located under /var/log ! > > As procmail is "suspicious", I recalled that I selected either use procmail or not use for local delivery while I re-configure the postfix. I ran "sudo dpkg-reconfigure postfix" again, and selected NOT use "Procmail" for local delivery, restart postfix and ran the tested again, it worked now ! examined the mail.log, it said "delivered to maildir" instead of procmail. > > why works NOT using procmail ? thx. > > From: lists-dovecot <replies-lists-a1z2-dovecot(a)listmail.innovate.net> > To: D Chen <dchenusa(a)yahoo.com> > Sent: Thursday, April 19, 2012 5:22 AM > Subject: Re: [Dovecot] IMAP SSL incoming test need help ! > > > > ------------ Original Message ------------ > > Date: Thursday, April 19, 2012 01:44:35 AM -0700 > > From: D Chen <dchenusa(a)yahoo.com> > > To: Dovecot Mailing List <dovecot(a)dovecot.org> > > Subject: [Dovecot] IMAP SSL incoming test need help ! > > > > Ubuntu 11.10 server with postfix/dovecot/squirrelmail configured. > > > > Outgoing SMTP server seemed worked fine, however, the incoming > > IMAP with SSL on port 993 doesn't seem to receive any mail at all > > !? Here is the mail.log during the test session from an external > > yahoo mail (dchenusa(a)yahoo.com) to the internal server > > testmail.biokeyinc.com (dchen(a)testmail.biokeyinc.com) The log did > > NOT show any error ! The sender showed sent mail! but no mail > > reach to the destination! Any help would be appreciated. > > > > Apr 19 01:20:02 testmail postfix/smtpd[4103]: connect from > > nm20-vm4.bullet.mail.ne1.yahoo.com[98.138.91.180] Apr 19 01:20:03 > > testmail postfix/smtpd[4103]: 091ED200973: > > client=nm20-vm4.bullet.mail.ne1.yahoo.com[98.138.91.180] Apr 19 > > 01:20:03 testmail postfix/cleanup[4108]: 091ED200973: > > message-id=<32C9C558-95DA-417D-8687-41ABE1296D61(a)yahoo.com> Apr 19 > > 01:20:03 testmail postfix/qmgr[2007]: 091ED200973: > > from=<dchenusa(a)yahoo.com>, size=2840, nrcpt=1 (queue active) Apr > > 19 01:20:03 testmail postfix/smtpd[4103]: disconnect from > > nm20-vm4.bullet.mail.ne1.yahoo.com[98.138.91.180] Apr 19 01:20:12 > > testmail postfix/smtpd[4113]: connect from localhost[127.0.0.1] > > Apr 19 01:20:12 testmail postfix/smtpd[4113]: 33AE9200AE9: > > client=localhost[127.0.0.1] Apr 19 01:20:12 testmail > > postfix/cleanup[4108]: 33AE9200AE9: > > message-id=<32C9C558-95DA-417D-8687-41ABE1296D61(a)yahoo.com> Apr 19 > > 01:20:12 testmail postfix/qmgr[2007]: 33AE9200AE9: > > from=<dchenusa(a)yahoo.com>, size=3536, nrcpt=1 (queue active) Apr > > 19 01:20:12 testmail postfix/smtpd[4113]: disconnect from > > localhost[127.0.0.1] Apr 19 01:20:12 testmail amavis[2042]: > > (02042-06) Passed CLEAN, [98.138.91.180] [98.138.87.4] > > <dchenusa(a)yahoo.com> -> <dchen(a)testmail.biokeyinc.com>, > > Message-ID: <32C9C558-95DA-417D-8687-41ABE1296D61(a)yahoo.com>, > > mail_id: rqyVZiQDwSsG, Hits: -0.109, size: 2837, queued_as: > > 33AE9200AE9, dkim_id=dchenusa@yahoo.com,@yahoo.com, 8647 ms Apr 19 > > 01:20:12 testmail postfix/smtp[4109]: 091ED200973: > > to=<dchen(a)testmail.biokeyinc.com>, > > relay=127.0.0.1[127.0.0.1]:10024, delay=9.5, > > delays=0.87/0.01/0/8.6, dsn=2.0.0, status=sent (250 2.0.0 from > > MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 33AE9200AE9) Apr > > 19 01:20:12 testmail postfix/qmgr[2007]: 091ED200973: removed Apr > > 19 01:20:12 testmail postfix/local[4114]: 33AE9200AE9: > > to=<dchen(a)testmail.biokeyinc.com>, relay=local, delay=0.18, > > delays=0.1/0/0/0.07, dsn=2.0.0, status=sent (delivered to command: > > procmail -a "$EXTENSION") Apr 19 01:20:12 testmail > > postfix/qmgr[2007]: 33AE9200AE9: removed Apr 19 01:21:30 testmail > > dovecot: imap-login: Login: user=<dchen>, method=PLAIN, > > rip=63.195.90.22, lip=192.168.20.100, mpid=4122, TLS Apr 19 > > 01:23:13 testmail dovecot: imap(dchen): Disconnected: Disconnected > > in IDLE bytes=99/708 Apr 19 01:23:23 testmail postfix/anvil[4105]: > > statistics: max connection rate 1/60s for (smtp:98.138.91.180) at > > Apr 19 01:20:02 Apr 19 01:23:23 testmail postfix/anvil[4105]: > > statistics: max connection count 1 for (smtp:98.138.91.180) at Apr > > 19 01:20:02 Apr 19 01:23:23 testmail postfix/anvil[4105]: > > statistics: max cache size 1 at Apr 19 01:20:02 > > ------------ End Original Message ------------ > > > I'm going to bet that procmail is eating the inbound message: > > Apr 19 01:20:12 testmail postfix/local[4114]: 33AE9200AE9: > to=<dchen(a)testmail.biokeyinc.com>, relay=local, delay=0.18, > delays=0.1/0/0/0.07, dsn=2.0.0, status=sent (delivered to command: > > procmail -a "$EXTENSION") > > and it's not getting to the user's inbox. If a message doesn't get > to the user's inbox then it's not dovecot's issue that it can't be > retrieved. > > fyi -- imap/dovecot have nothing to do your inbound delivery. > > > however, the incoming IMAP with SSL on port 993 doesn't > > seem to receive any mail > > that's handled by your MTA, which in your case is postfix, with > procmail in the mix. > > I would try looking at the procmail log to see what's happening > there. > > - Richard > > > > > > > > > > >

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[Dovecot] dovecot LDA with sendmail
by Hadi Salem 19 Apr '12

19 Apr '12

Hi, Im configuring sendmail with dovecot for virtual users using password file and file for user name. on centos. dovecot-1.0.7-7.el5 sendmail-8.13.8-2.el5 dovecot –n # 1.0.7: /etc/dovecot.conf base_dir: /var/run/dovecot/ log_path: /var/log/dovecot.log info_log_path: /var/log/dovecot.log ssl_disable: yes 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 default_mail_env: maildir:/home/vmail/%d/%n mail_location: maildir:/home/vmail/%d/%n mail_debug: yes mail_executable(default): /usr/libexec/dovecot/imap mail_executable(imap): /usr/libexec/dovecot/imap mail_executable(pop3): /usr/libexec/dovecot/pop3 mail_plugin_dir(default): /usr/lib64/dovecot/imap mail_plugin_dir(imap): /usr/lib64/dovecot/imap mail_plugin_dir(pop3): /usr/lib64/dovecot/pop3 auth default: verbose: yes debug: yes debug_passwords: yes passdb: driver: passwd-file args: /etc/dovecot/passwd userdb: driver: passwd-file args: /etc/dovecot/users socket: type: listen master: path: /var/run/dovecot/auth-master mode: 384 user: root group: root I have also added dovecot LDA for sendmail /usr/share/sendmail-cf/mailer/dovecot.m4 ######################*****############## ### DOVECOT Mailer specification ### ##################*****################## Mdovecot, P=/usr/libexec/dovecot/deliver, F=DFMPhnu9,S=EnvFromSMTP/HdrFromSMTP, R=EnvToSMTP/HdrFromSMTP,T=DNS/RFC822/X-Unix,A=/usr/libexec/dovecot/deliver -d $u And also [root@host1 mail]# cat /etc/mail/mailertable example.com dovecot:dovecot however when im sending email to the virtual user im getting this error, Apr 19 20:52:13 host1 sendmail[22311]: q3JHqDAR022309: to=<jamal(a)example.com>, ctladdr=<root(a)host1.bigmama.com> (0/0), delay=00:00:00, xdelay=00:00:00, mailer=dovecot, pri=120292, relay=dovecot, dsn=4.0.0, stat=Deferred: dovecot mailer (/usr/libexec/dovecot/deliver) exited with EX_TEMPFAIL Dovecot LDA can’t deliver the mail to the user!!!

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[Dovecot] Custom LDAP filter for doveadm-mailbox?
by Zhang Huangbin 19 Apr '12

19 Apr '12

Dear Timo, With Dovecot-2.0.16, 'doveadm mailbox list -A' will perform LDAP search with filter "(objectClass=posixAccount)", and get value of attribute 'uid' as mail user. Is it possible to custom the ldap filter and returned attribute name? For example: - LDAP filter: (&(objectClass=mailUser)(accountStatus=active)) - Returned attribute name: mail Did i miss something? Thanks. ---- Zhang Huangbin iRedMail: Open Source Mail Server Solution for Red Hat Enterprise Linux, CentOS, Scientific Linux, Debian, Ubuntu, Mint, Gentoo, openSUSE, FreeBSD: http://www.iredmail.org/

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