May 2006 - dovecot - dovecot.org

[Dovecot] Bug: maildirsize not updated when deleting folders
by Bill Boebel 11 Jun '06

11 Jun '06

When using maildir++ quotas, if you delete an IMAP folder, the maildirsize file should get updated so that it subtracts the size of the messages that were contained in the deleted IMAP folder. However Dovecot is not doing this, resulting in Dovecot showing an incorrect quota value until the next time the maildirsize file is rebuilt. Bill

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[Dovecot] RFC 3501 compliance issue: body-type-msg incorrect
by Tony Kay 11 Jun '06

11 Jun '06

Hi, I am using Dovecot 1.0 beta 7, moving to beta8 probably tomorrow. I am seeing a few RFC compliance issues with IMAP responses. I have an in-house IMAP client that caches IMAP data for a web mail system (it parses millions of IMAP interactions a day), and it reports whenever it gets a line that does not look RFC compliant. Unfortunately, users modify their mailboxes before I can get a copy that allows me to reproduce the errors. However, I can at least show you some examples of the response lines I'm seeing, since they are copied verbatim to my logs when they happen. I saw one case of imap-literal coming across without a \r\n sequence: * 1135 FETCH (UID 1345 RFC822.SIZE 4813894 BODY (("text" "plain" ("charset" "ISO-8859-1") NIL NIL "7bit" 415 6)("application" "octet-stream" ("name" {59}C:\\Documents and Settings\\Mitch\\Desktop\\AIR JORDANS.ppt) NIL NIL "base64" 4811938) "mixed") BODY[1]<0> {80} We sorted out what technical difficulties we having and have posted a corrected BODY[HEADER.FIELDS (FROM TO SUBJECT)] {90} From: XXX To: XXX Subject: Sports group II back online ) This one is probably some weird malformed message, since literal strings processing is certainly not broken in general. The much more common problem is when people receive a message that has a message embedded using the RFC3501 body-type-msg rule. Here is a sample incorrect response: * 4154 FETCH (UID 27140 RFC822.SIZE 14078 BODY (("text" "plain" ("charset" "ISO-8859-1" "format" "flowed") NIL NIL "7bit" 2 1)("message" "rfc822" ("name" "casbudmgr: FW: deans-dirs: Scholarship Announcement") NIL NIL "7bit" 11694 ("Wed, 12 Apr 2006 14:42:04 -0700" "casbudmgr: FW: deans-dirs: Scholarship Announcement" (("xxxxxxx xxxx" NIL "xxxxxx" "xxx.xxxxxxx.xxx")) ((NIL NIL "xxxxxxxxxxxxxxx" "lists.xxxxxxxxxxx")) ((NIL NIL "casbudmgr" "xxxxx.xxxxxxx.xxx")) ((NIL NIL "xxxxxxxxx" "xxxxxxxxxxxxxxxxx")) NIL NIL NIL <AF3B91355406B440A6E838338E63A742C6435B@xxxxxxxxxxxxxxxxxxxxxdu>") ("text" "plain" ("charset" "us-ascii") NIL NIL "quoted-printable" 2047 50)("text" "html" ("charset" "us-ascii") NIL NIL "quoted-printable" 6565 189) "alternative" 302)("text" "x-vcard" ("charset" "utf-8" "name" "ddkintz.vcf") NIL NIL "7bit" 415 14) "mixed")) Look through the line to the point where you see: "alternative" 302. The part the proceeds this is a body-type-mpart rule, but it is missing a set of parentheses...i.e. there should be an ending paren after alternative, and a beginning paren before the set of 1parts that precede it. This looks like a similar problem to what was in imap_bodystructure.c a while back. -- Anthony Kay University Computing Center (541) 346-1719 GPG Fingerprint: B0DB D46A 60AF FAE7 A94A 5075 0CB4 4D88 9F4F 7F09 Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning. Rich Cook

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[Dovecot] Fatal: chdir(/home/xxxxx) failed with uid xxx: Permission denied
by Nick Ortiz 11 Jun '06

11 Jun '06

I've had this issue for sometime, I finally gave up and switched to Courier-Imap but I'm finding I hate data storage / structure so I decided to give dovecot another go but am still running into the same issue. I had this working once upon a time and can not for the life of me figure it out. Here's some basic info. Dist: Gentoo 2005.1 Emerge Info: net-mail/dovecot-1.0_beta8 USE="ipv6 pam ssl -debug -kerberos -ldap -mbox -mysql* -pop3d -postgres -vpopmail" Permissions for /home: drwxr-x--x Owner for /home: root Permissions for /home/*: drwxr-xr-x Owner for /home/*: username:username dovecot: May 18 23:40:04 Info: auth(default): client in: AUTH 1 PLAIN service=IMAP secured lip=xxx.xxx.xxx.xxx rip=xxx.xxx.xxx.xxx dovecot: May 18 23:40:04 Info: auth(default): client out: CONT 1 dovecot: May 18 23:40:04 Info: auth(default): client in: CONT<hidden> dovecot: May 18 23:40:04 Info: auth(default): client out: OK 1 user=xxxx dovecot: May 18 23:40:04 Fatal: chdir(/home/xxxxx) failed with uid 502: Permission denied dovecot: May 18 23:40:04 Info: auth(default): master in: REQUEST 2 4464 1 dovecot: May 18 23:40:04 Info: auth(default): master out: USER 2 xxxx system_user=xxxx uid=502 gid=506 home=/home/xxxx ovecot: May 18 23:40:04 Info: imap-login: Login: user=<xxxx>, method=plain, rip=xxx.xxx.xxx.xxx, lip=xxx.xxx.xxx.xxx, TLS dovecot: May 18 23:40:04 Error: child 4488 (imap) returned error 89 Only real resolution I can find refers to SELinux which I do not have installed. I can provide my dovecot.conf if needed.

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[Dovecot] LDAP imaps,pop3s authentication problem
by Peter Susán 11 Jun '06

11 Jun '06

Hi, i'm using LDAP authentication with dovecot, and it's working flawlessly,until i enable SSL.. (even imaps or pop3s) i can't log in... if i test the certificates, and the login with the `openssl s_client - host example.com -port 993 -verify -debug` command, it works, until i want to log in... it lists the capibilities, but when i login it says "01 NO LOGIN failed"... no log messages appears in the logfile, only when i login without SSL... i've tried the newest beta8 and older versions of the server, but the effect is the same.. i'm really confused, becouse i have lots servers running dovecot, but with mysql authentication, and i didn't have any problems with them... the biggest problem is, that no log messages being generated during the process (with or without auth_debug, and auth_verbose options enabled), so i can't figure it out why is it happening.. it's working if i authenticate from other sources, just like passdb, or mysql... thx for the answers in advance, ->Peter Susán tel.: +36-20-395-3751 mail: peter(a)susinet.hu

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[Dovecot] beta8: cores on corrupted index file
by Jeff A. Earickson 11 Jun '06

11 Jun '06

Timo, I saw a couple of these cores over the weekend. The syslog says: May 21 19:04:48 emerald dovecot: [ID 107833 mail.error] IMAP(user): Corrupted index cache file /home/students/s/user/.imap/sent-mail-apr-2004/dovecot.index.cache: indexid changed With a resulting core file from imap at this time. I also discovered a remaining lock file on the person's imap file: -rw------- 1 user user 3088940 May 10 2004 sent-mail-apr-2004 -rw------- 1 user user 13 May 21 19:04 sent-mail-apr-2004.lock The lockfile contains the pid of the process that cores: May 21 19:04:48 emerald dovecot: [ID 684838 mail.error] child 17480 (imap) killed with signal 11 The gdb output of the core file is attached. Jeff Earickson Colby College

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[Dovecot] Dovecot statistics -- I hope this is a stupid question
by Jon Callas 11 Jun '06

11 Jun '06

Is there a way for me to know the last time a user logged in? i'm running Dovecot with Postfix with the authentication bridge and completely virtual everything. It would be nice to know the last time someone logged in, so four years from now I can delete the ones that haven't been used in three years. Jon

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[Dovecot] Slow caching
by John Rowe 11 Jun '06

11 Jun '06

I have just installed dovecot on a RedHat Enterprise 4 clone with exim MTA, procmail LDA and mbox format. I'm getting complaints of slow caching from a Mac user: I think there's still something very sick with [host]'s IMAP server: it just took a full five minutes to cache an attachment (350kb) in an email from [person]. In that time, I couldn't do anything else with mail; it was essentially locked. The user's inbox is in /var/spool/mail (where there are no idexes), there areindex files within his home directory: ./.imap/INBOX: total 1160 -rw------- 1 xyz users 60656 May 30 14:22 dovecot.index -rw------- 1 xyz users 891904 May 30 14:22 dovecot.index.cache -rw------- 1 xyz users 78428 May 30 14:22 dovecot.index.log -rw------- 1 xyz users 131920 May 26 11:29 dovecot.index.log.2 Everything is on local disk, there are no NFS mounts at all. Any thoughts? Thanks John

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[Dovecot] Inbox in two different locations
by arilinux 11 Jun '06

11 Jun '06

Hello I'm running dovecot v1.0.beta3 on a fedora 4 machine. I'm looking for the way to tell dovecot that some users have inbox (mailbox) in /var/mail/%u and some have inbox (maildir) in /home/%u/mail. Anyway?

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[Dovecot] missing empty line in mbox folders with Outlook 2000 client
by Gary Funck 11 Jun '06

11 Jun '06

I recently looked into a problem that has been plaguing me since the switch to dovecot a couple of years back, documented here: http://mailman.rwth-aachen.de/pipermail/procmail/2006-May/024363.html The gist is that when I tell Outlook 2000 to write all outgoing mail into a Sent-mail folder on the IMAP server (using mbox format), I find that the mbox's don't have empty lines separating the messages, (though the Content-Length field is correct. This leads to interoperability problems with programs and scripts that expect each mbox message to be separated by an empty line. (We're running dovecot-1.0-0.beta2.7 under Fedora Core 5 on an x86_64 platform.) Has this mbox behavior been reported before? Is it considered a bug or a feature? Is there a configuration option, or Outlook tweak, that can be enabled to ensure that the mbox's produced by writing messages to them via Outlook, are well-formed (have an empty line separating messages)?

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[Dovecot] Server settings for a busy server
by Pat Hastings 11 Jun '06

11 Jun '06

Hi, We are migrating from a windows server and i have very few stats as to what our current concurrent usage stats are other than about 50,000 active users and 90,000 email messages a day inbound 20,000 outbound. Anyone got some tips for tuning dovecot to handle this load? Below is my config - do the values of login_process_size etc sound correct? Also my logs seem to be written out as root which seems kind of scary do how do I / should I have these written out by the dovecot user. Any feedback greatfully accepted. Regards, Pat protocols = imap pop3 listen = * ssl_disable = no disable_plaintext_auth = no shutdown_clients = yes log_path = /var/log/dovecot/mainlog info_log_path = /var/log/dovecot/infolog log_timestamp = "%Y-%m-%d %H:%M:%S " login_dir = /var/run/dovecot/login login_chroot = yes login_user = dovecot login_process_size = 256 login_process_per_connection = no login_processes_count = 48 login_max_logging_users = 2048 login_greeting = Email server ready. login_log_format_elements = user=<%u> method=%m rip=%r lip=%l %c login_log_format = %$: %s first_valid_uid = 100 mail_extra_groups = mail valid_chroot_dirs = /var/vmail mail_debug = no default_mail_env = maildir:/var/vmail/dovecoterror/%domain/%u maildir_copy_with_hardlinks = yes protocol imap { } protocol pop3 { pop3_reuse_xuidl = no pop3_uidl_format =%u pop3_logout_format = top=%t/%p, retr=%r/%b, del=%d/%m, size=%s pop3_client_workarounds = outlook-no-nuls, oe-ns-eoh } auth_executable = /usr/lib/dovecot/dovecot-auth auth_verbose = yes auth_debug = yes auth_debug_passwords = yes auth default { mechanisms = plain passdb pam { } passdb ldap { args = /etc/dovecot/dovecot-ldap.conf } userdb passwd { } userdb ldap { args = /etc/dovecot/dovecot-ldap.conf } user = root } --- [This E-mail has been scanned for viruses but it is your responsibility to maintain up to date anti virus software on the device that you are currently using to read this email. ]

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