- dovecot - dovecot.org

[Dovecot] Bug in HIGHESTMODSEQ when MODSEQ tracking is not enabled for version 2.0.18.
by Glenn Wurster 23 Apr '12

23 Apr '12

Greetings, I'm new to the list. I have encountered what I believe to be a bug in the return of HIGHESTMODSEQ when talking to a IMAP client. HIGHESTMODSEQ does not appear to be incrementing when a new message arrives. The exact steps I took are: 1) Create a new mail account 2) Send a mail to the account, check that you can receive the email. Send a second mail to the account. 3) perform a SELECT on the mailbox from a new session. PMLK4 SELECT INBOX * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted. * 2 EXISTS * 1 RECENT * OK [UNSEEN 1] First unseen. * OK [UIDVALIDITY 1334074920] UIDs valid * OK [UIDNEXT 3] Predicted next UID * OK [HIGHESTMODSEQ 1] Highest PMLK4 OK [READ-WRITE] Select completed. 4) Retrieve the mail. Then perform another SELECT on the mailbox from yet another session. LLEP4 SELECT INBOX * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted. * 2 EXISTS * 0 RECENT * OK [UNSEEN 1] First unseen. * OK [UIDVALIDITY 1334074920] UIDs valid * OK [UIDNEXT 3] Predicted next UID * OK [HIGHESTMODSEQ 1] Highest LLEP4 OK [READ-WRITE] Select completed. 5) Send another mail to the account, and check SELECT again. FKDA4 SELECT INBOX * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted. * 3 EXISTS * 1 RECENT * OK [UNSEEN 1] First unseen. * OK [UIDVALIDITY 1334074920] UIDs valid * OK [UIDNEXT 4] Predicted next UID * OK [HIGHESTMODSEQ 1] Highest FKDA4 OK [READ-WRITE] Select completed. It appears as if HIGHESTMODSEQ is not being updated. I can get HIGHESTMODSEQ to start updating correctly if I send a "UID FETCH 1 MODSEQ" or similar command, which appears to enable MODSEQ tracking at the server (according to the comment around line 173 in file src/lib-index/mail-index-modseq.c), but until that command is sent, MODSEQ tracking is not enabled and hence HIGHESTMODSEQ is always going to return 1. According to RFC4551, the combination of HIGHESTMODSEQ and UIDVALIDITY should be sufficient to determine if the metadata associated with the mailbox has changed, but in this case looking at only those two parameters does not yield sufficient information about changes in the mailbox. The mail client I'm using relies on the combination of HIGHESTMODSEQ and UIDVALIDITY to determine if there are changes in the mailbox, and hence does not see new mail come in. It seems that Dovecot should not be returning HIGHESTMODSEQ in response to a command if MODSEQ tracking is not enabled, but I could be wrong. I've attached my configuration (it's Dovecot 2.0.18 running on Debian Stable). Let me know if you need more information. Glenn. --------------------------------------------------------------------- This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful.

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[Dovecot] French characters from 2.0.x to 2.1.3
by Frank Bonnet 23 Apr '12

23 Apr '12

Hello Maybe it's a coincidence but it "seems" since I upgrade from 2.0.18 to 2.1.3 that some French characters ( a with accents by example ) are not well displayed anymore using thunderbird and are replaced by a "?" character Thanks for any info

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[Dovecot] imapc / namespace question
by René Neumann 23 Apr '12

23 Apr '12

Hi, I've got two questions regarding imapc and namespaces: 1) Is there a way of stating, that I only want part of the hierarchy on the end of an imapc connection to be available here? My "problem": On the other end the layout is: INBOX.Shared.{some,nice,folders} If I mirror this into my dovecot hierarchy with prefix "Gemeinsam" I get the following folder structure: Gemeinsam.INBOX.Shared.{some,nice,folders} But I want to ignore the two top-most parts of the hierarchy, i.e. I want it to look: Gemeinsam.{some,nice,folders} Is this possible? I tried with 'location=imapc:INBOX.Shared.' but this did not change anything. 2) "Private" namespaces only make sense, if location contains something user-specific like "%u" or "~". Is this correct? If yes: Is there some other way to make something like an imapc connection only appear for one user, if there is nothing in the location or imapc_user to denote the user it belongs to and hence I cannot use "private"? The only way I see currently is to use "shared" and set up ACLs to forbid all users except one to access the namespace (which gets slightly ugly as I have to use global ACLs, as -- I think -- there is no way to store ACLs for an imapc storage). Thanks, René

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Re: [Dovecot] Error in logs indicating broken files
by Joseph Tam 23 Apr '12

23 Apr '12

Steve Campbell <campbell(a)cnpapers.com> writes: > 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. This is just one dovecot IMAP client process moaning after another user client process pulled the rug out from under it by modifying the mailbox. I get a few dozen log entries of this sort per week with ~200 IMAP users without shared access. Unless your users actually complain about a problem, I think it's safe to ignore them. Joseph Tam <jtam.home(a)gmail.com>

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[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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