- dovecot - dovecot.org

[Dovecot] imap failed asssert in imap-bodystructure.c
by Matt Ronge 26 Dec '06

26 Dec '06

I'm running Dovecot on a Debian system which recently has been failing on an assert(). I have a spam mailbox that if I try and open (from any client), the imap process dies and this is written to the error logs: Dec 21 18:57:11 theronge imap(mronge): file imap-bodystructure.c: line 278 (part_parse_headers): assertion failed: (part->physical_pos >= input->v_offset - start_offset) Dec 21 18:57:11 theronge dovecot: child 28911 (imap) killed with signal 6 I had this same issue with my Inbox a few weeks ago, so I moved all the e-mail out and moved each piece back in one by one, in order to determine if a piece of mail was causing the issue. As soon as all my mail was moved back in, the issue went away and I was able to load my Inbox as usual. I still have the same issue with my spam mailbox, is there anything particular I can do to help debug this issue? In the past I've rm'ed all the mail in my spam mailbox and that fixes it. One thing that may be related is that I only noticed this issue after I had setup Spambayes, which does it's work via procmail. The mailboxes that I've had the issue with, all had headers that contain a Spambayes header, usually like so: X-Spam-Score: 26 X-Spam-Score: 0.6 (/) Sender: mailman-bounces(a)acm.uiuc.edu Errors-To: mailman-bounces(a)acm.uiuc.edu X-Spam-Score: 0.1 (/) X-Authenticated-Sender: X-Spam-Details: rule=cautious-plus_notspam policy=cautious-plus score=26 mlx=26 adultscore=0 adjust=0 reason=mlx engine=3.1.0-0611300000 definitions=main-0612060023 X-Spam-OrigSender: mailman-bounces(a)acm.uiuc.edu X-Spam-Bar: *** X-Spambayes-Classification: spam; 1.00 X-Spambayes-Trained: spam I'm not sure if it's related, but it's a shock in the dark on my part. Any suggested steps that might help isolate this bug? -- Matt Ronge

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[Dovecot] Intermittent "cannot update mailbox" problems w/ postfix & dovecot
by John Reddy 26 Dec '06

26 Dec '06

I hate asking questions on mailing lists, but I've exhausted my googling and FAQ trawling skills. If I've missed the pertinent doc, please tell me where to RTFM. Environment: I'm running postfix 2.3.2 on a Solaris 10 server. Mail goes into standard mbox format in /var/mail. Users can access their mail via shell (pine, mutt), POP3 or IMAP, and the pop3/imap server is dovecot-1.0.rc15. Problem: For a few users, mail occasionally fails to deliver. The mail is accepted by smtpd, passes cleanup and qmgr without incident. When it gets to local delivery, though, local complains that "cannot open file: Permission denied". A sample log entry (slightly sanitized): Dec 7 09:42:05 solaris-host local[18332]: [ID 197553 mail.info] D35C3445C: to=<bubba(a)solaris-host.sample.com>, relay=local, delay=0.17, delays=0.09/0/0/0.08, dsn=5.2.0, status=bounced (cannot update mailbox /var/mail/bubba for user bubba. cannot open file: Permission denied) Dec 7 10:52:26 solaris-host local[20775]: [ID 197553 mail.info] 670C9445D: to=<jack(a)solaris-host.sample.com>, relay=local, delay=15, delays=8.9/0/0/6.5, dsn=5.2.0, status=bounced (cannot update mailbox /var/mail/jack for user jack. cannot open file: Permission denied) Does anyone have any advice on how I might get better details about why postfix is having trouble accessing the file? Has anyone run into this before? My initial suspicion is a lock file from the users' POP3 connections... Thanks in advance for any help. -John

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[Dovecot] [Fwd: mbox somewhere else?]
by Kartagis 26 Dec '06

26 Dec '06

In case it's missed :) -------- Original Message -------- Subject: [Dovecot] mbox somewhere else? Date: Tue, 19 Dec 2006 20:26:30 +0200 From: Tolga <kartagis(a)kunduz.org> To: dovecot(a)dovecot.org Hi, I want to store my folders somewhere else, it used be in ~/mail. Is this as easy as moving everything in ~/mail to /var/mail/ and editing /etc/dovecot/dovecot.conf to read mail_location=mbox:~/mail:INBOX=/var/mail/%u ? Also, is the syntax mail_location=mbox:/var/mail/%u-folders:INBOX=/var/mail/%u correct? Regards, -- Whatever it is, I fear Greeks even when they bring gifts. -- Publius Vergilius Maro (Virgil)

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[Dovecot] vpopmail problem
by Toni Panadès 26 Dec '06

26 Dec '06

Hi! Sorry for my english... I recently know about dovecot and I try to use it on my server. Previously I used qmail+vpopmail+courier and now I want to use postfix+dovecot and, to mantain all my mailboxes structure, I try to use dovecot with vpopmail. During configuration the script detects my vpopmail installation and configuration and after I get this status: Install prefix ...................... : /usr/local File offsets ........................ : 64bit I/O loop method ..................... : poll File change notification method ..... : dnotify Building with SSL support ........... : yes (OpenSSL) Building with IPv6 support .......... : yes Building with pop3 server ........... : yes Building with mail delivery agent .. : yes Building with GSSAPI support ........ : no Building with user database modules . : static prefetch passwd passwd-file checkpassword vpopmail (modules) Building with password lookup modules : passwd passwd-file shadow checkpassword vpopmail (modules) And after some testing I start the daemon with this config: protocols = imap imaps pop3 pop3s auth default { mechanisms = plain passdb vpopmail {} userdb vpopmail {} user = vpopmail } I connect to localhost via pop3 and when I try to auth some user I get this: Dec 26 01:27:45 anet dovecot: auth(default): client in: AUTH 1 PLAIN service=IMAP secured lip=127.0.0.1 rip=127.0.0.1 resp=AHNyb2RvbkBncmFjaWFuZXQub3JnAHR3aXN0 Dec 26 01:27:45 anet dovecot: auth(default): vpopmail(srodon(a)anet.org,127.0.0.1): unknown user Dec 26 01:27:46 anet dovecot: auth(default): client out: FAIL 1 user=srodon(a)anet.org Dec 26 01:27:46 anet dovecot: imap-login: Aborted login: user=<srodon(a)anet.org>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured I tried other auth methods but I get an "Unsupported authentication mechanism" error. A try with encrypted password files and with a plan one. thanks in advance!

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[Dovecot] Sizing login_process_size and login_processes_count?
by Francisco Reyes 25 Dec '06

25 Dec '06

Any suggestions on sizing login_process_size and login_processes_count for a server expected to be doing 100 to 200 simultaneous connections? Is there a way to separate login_processes_count between imap and pop? I would like to have at least 50 imap processes ready, but we rarely have any more than 5 to 10 pop connections. Would be a shame to have 40+ pop login processes doing nothing most of the time. For now did login_process_size = 96, but with an average of 100 to 200 and some rare ocassion of 300+ connections I am wondering what is a reasonable number for login_process_size.

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[Dovecot] LDA + sieve +Maildir?
by Francisco Reyes 25 Dec '06

25 Dec '06

I have a working Dovecot + LDA + Maildir setup and am looking to implement sieve with it. The examples that I have seen seem to be for mbox. Does sieve work with maildir? Looking to move mails marked as spam to a spam folder. Also we have a feature we offer to send spam to a different account in the domain. Could this also be done with sieve?

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Re: [Dovecot] dovecot Digest, Vol 44, Issue 53
by Lars Skovgaard 25 Dec '06

25 Dec '06

Den 25/12/2006 kl. 13.00 skrev Adrian Gill: > Date: Sun, 24 Dec 2006 16:43:40 -0000 > From: "Adrian Gill" <adrian(a)ssinternet.co.uk> > Subject: Re: [Dovecot] NTLM authentication woes > To: <dovecot(a)dovecot.org> > Message-ID: <023001c7277a$ae1bcf60$4107a8c0@AdeLaptop> > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=response > > Lars wrote: > [Re Outlook handling of SPA/NTLM] >> Turning on auth_debug and auth_verbose has led me to discover that MS >> Outlook uses the users full name as login, instead of whatever is >> entered >> in the account-information - if the user "John Doe" has the login >> "jd(a)domain.com", Outlook sends "John Doe" instead. This of course >> fails. >> Strangely enough, if I turn off "Use Secure Authentication" from >> within >> Outlook, the login-name from the account- information is used as >> it should >> be. > > Not a solution I'm afraid, but just to let you know that I've been > experimenting with NTLM (actually with Exim for authenticated SMTP) > for a > while with a few users and had the same problems - different > versions of > Outlook behave slightly differently, but none (that I've found) > seem to work > properly. Usually Outlook sends the users Windows Logon username and > password (which is often their name, but often something else too like > 'Administrator') initially, and sometimes then retries > automatically with > the correct details. > > Things never seem to be that consistent though, except that they're > consistently bad. Frustratingly, the only option I have is to tell > users > that have problems to use Thunderbird or something else and use > cram-md5 > instead. > > As far as Outlook goes I think Microsoft seem to only bother > testing NTLM > running with MS Exchange on a local network... v.annoying! > > (Sorry not that helpful a post) > > Adrian Hi Adrian Thanks for your reply. I suspected as much, though I had hoped that there was an easy applicable solution. Sadly my MS-using clients are reluctant at best to change their applications, flawed as they may be, so I guess they'll have to live with things as they are for now. MS really should fix their apps, but that's a topic for a discussion of it's own. I use a mysql-backend, and suspect I could change the login-call to match whatever Outlook or Entourage choose to send, but that would be difficult to make consistent enough to be truly workable, I think... Thanks for your time /Lars

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[Dovecot] NTLM authentication woes
by Lars Skovgaard 24 Dec '06

24 Dec '06

Hi all, I have set up dovecot to use a number of different authentication- mechanisms, which are all working as expected from well-behaved clients. However, MS Outlook on Windows and MS Entourage X on Mac OS X refuse to connect using NTLM. Outlook Express on Windows seems to be working fine, and NTLM authentication works from within OS X Mail.app as well. Turning on auth_debug and auth_verbose has led me to discover that MS Outlook uses the users full name as login, instead of whatever is entered in the account-information - if the user "John Doe" has the login "jd(a)domain.com", Outlook sends "John Doe" instead. This of course fails. Strangely enough, if I turn off "Use Secure Authentication" from within Outlook, the login-name from the account- information is used as it should be. From MS Entourage, the problem is similar but not identical. Here, the login is sent as "jd(a)domain.com/jd". I have worked around the problem for now by instructing my clients to use SSL-connections and disabling "Secure Authentication", but would like for everyone to be able to log on without using SSL (due to the returning questions regarding my self-signed certificate). Can anyone shed some light on why the MS apps refuse to behave? Thanks in advance! /Lars PS: I wish you all a merry christmas and a happy new year! :o)

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[Dovecot] Postfix + Doveot SASL
by Marco Nenciarini 23 Dec '06

23 Dec '06

Hi, i'm trying to configure my postfix to use dovecot SASL instead of saslauthd with rimap to authenticate my users. I've modified my postfix/dovecot configuration as is described on http://wiki.dovecot.org/PostfixAndDovecotSASL but when an user try to login it fails with the following log (debug_auth = on): Dec 12 15:07:53 lorien dovecot: auth(default): client in: AUTH^I1^IPLAIN^Iservice=smtp^Iresp=<hidden> Dec 12 15:07:53 lorien dovecot: auth(default): passdb(mnencia(a)prato.linux.it,master): Attempted master login with no master passdbs Dec 12 15:07:55 lorien dovecot: auth(default): client out: FAIL^I1^Iuser=mnencia(a)prato.linux.it The question is? Why i need a master login to use SASL? How to make my postfix SASL using usual userdb? Ciao, Marco -- --------------------------------------------------------------------- | Marco Nenciarini | Debian/GNU Linux Developer - Plug Member | | mnencia(a)prato.linux.it | http://www.prato.linux.it/~mnencia | --------------------------------------------------------------------- Key fingerprint = FED9 69C7 9E67 21F5 7D95 5270 6864 730D F095 E5E4

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[Dovecot] Postfix/Dovecot virtual - directory structure
by Johan Folin 23 Dec '06

23 Dec '06

Hi, perhaps I should post this in a Postfix forum but I'll give it a shot: I want my accounts sorted under /home/vmail/[domain]/[username] (and I managed to get Dovecot to look for mail there with %d and %n ), but how do I tell Postfix to sort the mail? I can't figure out how to do it. The virtual_mail_base is /home/vmail/ but there I get a bunch of folders in the form [username]@[domain]. I use mysql for the virtual mailboxes if that matters. I'll be grateful for any suggestions. /Johan Folin

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