April 2012 - dovecot - dovecot.org

[Dovecot] Correction of home and mail directory config
by "L. Grün" 22 Apr '12

22 Apr '12

Hello, after running dovecot for a while, I stumbled accross the warning, not to have mail and home directory settings point to one and same directory. Here is the output of dovecot -n: > dovecot -n # 1.2.15: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-686 i686 Debian 6.0.4 ext3 log_timestamp: %Y-%m-%d %H:%M:%S protocols: imaps imap disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable: /usr/lib/dovecot/imap-login mail_max_userip_connections: 100 mail_privileged_group: mail mail_uid: 5000 mail_gid: 5000 mail_location: maildir:/var/vmail/%d/%n/Maildir mail_full_filesystem_access: yes mbox_write_locks: fcntl dotlock namespace: type: private separator: . inbox: yes list: yes subscriptions: yes lda: auth_socket_path: /var/run/dovecot/auth-master postmaster_address: xxxx(a)xxxx.org mail_plugins: sieve log_path: auth default: mechanisms: plain login passdb: driver: sql args: /etc/dovecot/dovecot-sql.conf userdb: driver: static args: uid=5000 gid=5000 home=/var/vmail/%d/%n/Maildir allow_all_users=yes socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix master: path: /var/run/dovecot/auth-master mode: 384 user: vmail In "args: uid=5000 gid=5000 home=/var/vmail/%d/%n/Maildir allow_all_users=yes" I should delete "Maildir". My question is: What files do I have to copy from /Maildir to the home directory /var/vmail/%d/%n/ ? Are there other side effects, I have to consider? Thank you very much for your help! Stefan

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[Dovecot] sieve against ldap in Dovecot 1.2 vacation messeage
by Victor Oñate 22 Apr '12

22 Apr '12

Hi. I need configure "sieve" against ldap this is my file configuration dovecot.conf plugin { quota = dirsize:user sieve_dir = ~/sieve } protocol lda { mail_plugins = sieve } auth default { mechanisms = plain passdb pam { } userdb ldap { args = /etc/dovecot/dovecot-ldap.conf } user = nobody } I dont know what I have to put in dovecot-ldap.conf, ofcourse I have a atribut in LDAP by user with a vacation messeage "I'm out of office, please contact Mr. Black" this is dovecot-ldap.conf hosts = server auth_bind = yes ldap_version = 3 base = dc=dominio,dc=uk deref = never scope = subtree user_attrs = homeDirectory=home,uidNumber=uid,gidNumber=gid,mail=Maildir,mailQuotaSize=quota_rule=*:storage=%$ user_filter = (&(objectClass=posixAccount)(uid=%u)) The principal idea is keep the control the message by user with LDAP and Dovecot(IMAP). without touching the postfix configuration file is that possible, or am I dreaming. Thanks.. Victor Oñate.

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[Dovecot] Dovecot upgrade
by Jos Chrispijn 22 Apr '12

22 Apr '12

Can someone tell me how I can upgrade from Dovecot 1.x to 2.x best? thanks for your reply, Jos Chrispijn

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Re: [Dovecot] dovecot LDA with sendmail
by Joseph Tam 22 Apr '12

22 Apr '12

> i installed new version 2.0.20. but its the same problem > > args = username_format=%u /etc/dovecot/users ... > > Apr 21 17:47:16 host1 sendmail[32561]: q3LElF79032559: 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/local/libexec/dovecot/dovecot-lda) exited with EX_TEMPFAIL Any logs for dovecot? Same sendmail configs as before or did you try the extra flag I suggested? Joseph Tam <jtam.home(a)gmail.com>

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[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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