- dovecot - dovecot.org

[Dovecot] Dovecot and fcntl errors
by Eric Joe 05 Oct '04

05 Oct '04

Hello, I am new to the list and after searching the net for a solution to this problem, I have yet to find it. Maybe someone here can help. I had been using Dovecot that came with FC2 for about 1200 POP3 and IMAP mail accounts. At random times (1-5 days) an imap process would run the cpu usage up to 99% on one of my cpus (Running SMP P3-866) and hang. That process was unkillable and only a reboot would fix the problem. If I let it go, eventually it would lock up the server completely. I am seeing this error in my /var/log/maillog <snip> Oct 4 08:23:21 ns2 imap(editorial): Timeout while waiting for release of exclusive fcntl() lock for index file /home/editorial/mail/.imap/INBOX/.imap.index Oct 4 23:00:10 ns2 imap(jimar5573): Timeout while waiting for release of exclusive fcntl() lock for index file /home/jimar5573/mail/.imap/INBOX/.imap.index Oct 4 23:02:10 ns2 imap(jimar5573): Timeout while waiting for release of exclusive fcntl() lock for index file /home/jimar5573/mail/.imap/INBOX/.imap.index Oct 4 23:04:10 ns2 imap(jimar5573): Timeout while waiting for release of exclusive fcntl() lock for index file /home/jimar5573/mail/.imap/INBOX/.imap.index </snip> I have since upgrade (built from source) Dovecot 0.99.11 and have been running for 2 days without a hung process or lockup, but I still see these errors in the maillog. Can anyone suggest a fix? Regards Eric

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Re: [Dovecot] SSL setup ?
by Marius Stan 05 Oct '04

05 Oct '04

Timo Sirainen wrote: > On 1.10.2004, at 18:25, Marius Stan wrote: > >>> --ssl, not -ssl >> >> >> damn. I'm tired... anyway, I swear I've RTFM but I didn'n find this >> switch. > > > Well, preferred way to start Dovecot is to run it via dovecot master > binary, not via inetd. I should write some page about it to wiki I > guess.. >> What's tho switch for debug ? now I've got this: >> pop3-login: Oct 01 16:49:56 Fatal: SSL initialization failed >> and some more verbosity would prevent me from bothering you again > > > The error messages are usually quite good I think. This is one > exception, I'll fix it. Anyway, two possibilities: > > a) Dovecot wasn't compiled with SSL support at all. Install prefix ...................... : /usr File offsets ........................ : 64bit Building with SSL support ........... : yes (OpenSSL) Building with IPv6 support .......... : yes Building with pop3 server ........... : yes Building with user database modules . : static passwd passwd-file ldap pgsql mysql (modules) Building with password lookup modules : passwd passwd-file shadow pam ldap pgsql mysql (modules) > > b) ssl_disable = yes it's not disabled... Marius

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[Dovecot] Dovecot/IMP Bug with RFC822.SIZE and BODYSTRUCTURE
by Ryan Hulsker 05 Oct '04

05 Oct '04

Ok, I have narrowed my IMP/Dovecot attachment problem down to what I think is a bug in Dovecot. The test that follow are performed on 0.99.11. When you download an attachment in IMP it uses the php function imap_fetchbody() which contacts the IMAP server and retrieves just the mime chunk you are looking for. It does this by first fetching some information about the email, and then grabs the specific chunk you are looking for in a second request. The first request looks like this. "FETCH 258 (ENVELOPE BODY.PEEK[HEADER.FIELDS (Path Message-ID Newsgroups Followup-To References)] BODYSTRUCTURE INTERNALDATE RFC822.SIZE FLAGS)" Dovecot responds properly on all parts of this request except for the BODYSTRUCTURE portion which gets returned as this. "BODYSTRUCTURE ("text" "plain" NIL NIL NIL "7bit" 0 0 NIL NIL NIL)" This causes the imap_fetchbody() funtion to freak out and not do the 2nd request, and it returns 0 bytes. If I manually try "FETCH 258 (BODYSTRUCTURE)" Dovecot returns the expected data properly. I figured there must be an interaction between the BODYSTRUCTURE fetch and one of the other items that are requested, so I tried them all and narrowed it down to this. FETCH 258 (BODYSTRUCTURE) <- works OK FETCH 258 (BODYSTRUCTURE RFC822.SIZE) <- BODYSTRUCTURE reply is wrong. I have been surfing through the dovecot source looking for a way to fix or work around this, but I am only a mediocre C coder. Can anyone enlighten me? Ryan Hulsker

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[Dovecot] 1.0-test46: Assertion failed
by dovecot 05 Oct '04

05 Oct '04

Hi, I'm experiencing there assertions in the mail log (about 8 times during the last 2 days): Oct 5 11:20:51 web dovecot: POP3(xxxxx): file mbox-lock.c: line 493 (mbox_lock): assertion failed: (lock_type == F_RDLCK || ibox->mbox_lock_type != F_RDLCK) What is it? I'm running 1.0-test46 and sendmail on FC2. This is in dovecot.conf: #fcntl_locks_disable = no #mbox_read_locks = fcntl mbox_write_locks = fcntl Thanks. Martin

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[Dovecot] trouble accessing mbox folders with simultaneous logins
by 2 m＠le / Jonathan Salomon 04 Oct '04

04 Oct '04

Hi all! I have setup dovecot (RPM) on a Fedora Core 2 machine using LDAP for authentication. It all seems to work pretty well, except for simultaneous logins. I am using mbox files to store the mail as follows (from /etc/dovecot.conf): default_mail_env = mbox:~/.mail/:INBOX=/var/mail/%u:INDEX=MEMORY So the INBOX file is stored in /var/mail, other mailfolders are stored in the users home directory in the .mail folder. Because the /home directory of this machine is mounted from fileserver through NFS, I have set the INDEX=MEMORY options (see http://www.dovecot.org/doc/nfs.txt) As said before I am getting some problems when using simultaneous logins for the same mail account (for instance when multiple users that work on a specific project want to share a mail account containing all the mail about the project in addition to their private account). The client used is Microsoft Outlook and besides some outlook specific problems, it also gives these errors (translated from Dutch) when many users are simultaneously logged in to the same account: 'Your server reported that a UID does not comply with the IMAP standard, which signifies an error on the server.' 'The UID of a message is unexpectedly deleted. This signifies an error on the server.' I am not sure where to look... I assume a problem with the index files? Does NFS cause the problem? Will this be fixed if I switch to maildirs? I would be grateful for any tips on the subject! Jonathan ----------------------------------------------------- Dit E-mail bericht met eventuele attachments is gescanned op virussen ----------------------------------------------------- Dit e-mailbericht is uitsluitend bestemd voor de geadresseerde(n). Indien de e-mail bij vergissing bij u terecht is gekomen, wilt u ons dan direct bellen? Wij verzoeken u in dit geval de e-mail te vernietigen, de inhoud ervan niet te gebruiken en niet onder derden te verspreiden, omdat het bericht vertrouwelijke informatie kan bevatten. Telefoon: + 31 20 494 24 24 This is an e-mail from 2 m@le Computer Services. This e-mail may contain confidential information and/or privileged legal or sensitive business data . This e-mail is intended for the addresse(s) stated above only. If you are not the intended recipient you are hereby notified that any disclosure, copying, distribution or taking any action in reliance on the contents of this information is strictly prohibited and may be unlawful. Please delete this e-mail. Thank you.

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Re: [Dovecot] trouble accessing mbox folders with simultaneous logins
by Michael Cosby 04 Oct '04

04 Oct '04

I can help you narrow the problem down a bit. I'm assuming you're using 1.0-test45 or 46, in which case I see the same problem using mbox, index files stored on disk and no NFS. I access my mail via pine and chatter email (an imap client for the palm). While I've not seen any errors that specifically say UID, the client for the palm will occasionally reload messages from a few days back thinking they're new, which eventually crashes the client when the count of mail it should be loading doesn't match what it actually got (the palm client's in beta, too :) ). I solved the problem by moving back to the 0.99 series, which other than performance issues works just fine for me. - Michael ------------------- In response to: Hi all! I have setup dovecot (RPM) on a Fedora Core 2 machine using LDAP for authentication. It all seems to work pretty well, except for simultaneous logins. I am using mbox files to store the mail as follows (from /etc/dovecot.conf): default_mail_env = mbox:~/.mail/:INBOX=/var/mail/%u:INDEX=MEMORY So the INBOX file is stored in /var/mail, other mailfolders are stored in the users home directory in the .mail folder. Because the /home directory of this machine is mounted from fileserver through NFS, I have set the INDEX=MEMORY options (see http://www.dovecot.org/doc/nfs.txt) As said before I am getting some problems when using simultaneous logins for the same mail account (for instance when multiple users that work on a specific project want to share a mail account containing all the mail about the project in addition to their private account). The client used is Microsoft Outlook and besides some outlook specific problems, it also gives these errors (translated from Dutch) when many users are simultaneously logged in to the same account: 'Your server reported that a UID does not comply with the IMAP standard, which signifies an error on the server.' 'The UID of a message is unexpectedly deleted. This signifies an error on the server.' I am not sure where to look... I assume a problem with the index files? Does NFS cause the problem? Will this be fixed if I switch to maildirs? I would be grateful for any tips on the subject! Jonathan ----------------------------------------------------- Dit E-mail bericht met eventuele attachments is gescanned op virussen ----------------------------------------------------- Dit e-mailbericht is uitsluitend bestemd voor de geadresseerde(n). Indien de e-mail bij vergissing bij u terecht is gekomen, wilt u ons dan direct bellen? Wij verzoeken u in dit geval de e-mail te vernietigen, de inhoud ervan niet te gebruiken en niet onder derden te verspreiden, omdat het bericht vertrouwelijke informatie kan bevatten. Telefoon: + 31 20 494 24 24 This is an e-mail from 2 m@le Computer Services. This e-mail may contain confidential information and/or privileged legal or sensitive business data . This e-mail is intended for the addresse(s) stated above only. If you are not the intended recipient you are hereby notified that any disclosure, copying, distribution or taking any action in reliance on the contents of this information is strictly prohibited and may be unlawful. Please delete this e-mail. Thank you. )

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[Dovecot] Slow squirrelmail login/IMAP CPU 80%
by rusecure＠rogers.com 04 Oct '04

04 Oct '04

I've been having a problem with Dovecot on Fedora Core 2 with SquirrelMail on the same system. When ever I login through SquirrelMail the imap process consumes around 80% of my CPU and the login takes forever (about 10 minutes). 1 Once I do manage to login, everything is fine and can even log out and back in without issue. Has anyone encountered this? Thanks, Nelson

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[Dovecot] Public folders / namespace documentation
by Keith Edmunds 04 Oct '04

04 Oct '04

Does Dovecot support public folders? I thought it may do via namespaces, but having searched the Wiki and the documentation, I can't find how namespaces are defined. I've probably not looked in the right place - any pointers? Thanks, Keith

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[Dovecot] using %d in passdb
by leon breedt 04 Oct '04

04 Oct '04

hi, i'd like to seperate the password file for seperate virtual domains into seperate files. i tried specifying: passdb = passwd-file /etc/exim_incoming/local/accounts/pwdb/%d but i get an error message that it couldn't open the particular file, and then Dovecot shuts down. is there a way to do lazy-lookups? or, would i be required to write a little helper program and have Dovecot connect to its socket to do auth? leon

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[Dovecot] evolution and received by header
by Dan Stromberg 03 Oct '04

03 Oct '04

Evolution has a nice feature where it can sort messages by the most recent received-by date, instead of the Date: header. This is nice, because then if something gets stuck on a server somewhere in the world for a couple of days, it shows up at the end of your mail list, instead of way back where you might miss it. However, when using dovecot with evo, if I sort of received by instead of date, it takes forever. I assume this is because date is indexed, and received by is not. So the natural question becomes, is there a way of getting dovecot to index received by? TIA.

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