October 2005 - dovecot

[Dovecot] 1.0.alpha3 plaintext authentication problem
by Sergey Redin 28 Oct '05

28 Oct '05

Hello everyone, Since the upgrade to 1.0.alpha3 I experience a strange problem with plaintext authentication. I successfully login first few (2-5) times after the dovecot restart, and then on a reason I cannot login any more (both via POP3 and IMAP). I tried to find out what could be the reason for this but I failed. Nothing is changed inside the user's home directory or /var/run/dovecot, but I cannot login any more. I guess there is something wrong inside dovecot-auth od dovecot process itself. I just start to receive "01 NO Authentication failed." or "-ERR Authentication failed." from dovecot and "Authenticate PLAIN failed: Unsupported authentication mechanism.: method=PLAIN" in my logs, even though I used the same PLAIN two minutes ago without a problem. Here is my dovecot.conf: nevoservice# egrep -v '^[ ]*(\#.*)?$' /usr/local/etc/dovecot.conf protocols = imap pop3 ssl_disable = no ssl_cert_file = /etc/mail/certs/server.crt ssl_key_file = /etc/mail/certs/server.key disable_plaintext_auth = no log_path = /var/log/dovecot/log info_log_path = /var/log/dovecot/info login_user = dovecot login_processes_count = 1 verbose_proctitle = no first_valid_gid = 0 mail_extra_groups = mail mail_debug=yes default_mail_env = mbox:/var/mail/%u maildir_copy_with_hardlinks = yes protocol imap { imap_client_workarounds = delay-newmail outlook-idle netscape-eoh tb-extra-mailbox-sep } protocol pop3 { pop3_uidl_format = %08Xu%08Xv pop3_client_workarounds = outlook-no-nuls oe-ns-eoh } auth_verbose = yes auth_debug = yes auth default { mechanisms = plain passdb passwd-file { args = /usr/local/etc/dovecot.passwd } userdb passwd-file { args = /usr/local/etc/dovecot.passwd } user = root } Here are two lines in dovecot.passwd which define the user that I use: wail:password-hash:1050:1032:Administrator wail.spb.ru:/home/wail.spb.ru:::/var/mail/wail wail@nevoservice.ispvds.com:password-hash:1050:1032:Administrator wail.spb.ru:/home/wail.spb.ru:::/var/mail/wail A few lines from my /var/log/dovecot/info file: dovecot: Oct 10 02:03:11 Info: auth(default): client in: AUTH 1 PLAIN service=POP3 lip=82.146.50.34 rip=82.146.63.23 resp=AHdhaWwAVGxNSFRuUlI2 dovecot: Oct 10 02:03:11 Info: auth(default): client out: OK 1 user=wail dovecot: Oct 10 02:03:11 Info: auth(default): master in: REQUEST 3 53919 1 dovecot: Oct 10 02:03:11 Info: auth(default): master out: USER 3 wail uid=1050 gid=1032 home=/home/wail.spb.ru mail=/var/mail/wail dovecot: Oct 10 02:03:11 Info: pop3(wail): Effective uid=1050, gid=1032 dovecot: Oct 10 02:03:11 Info: pop3(wail): maildir autodetect: stat(/var/mail/wail/cur) failed: Not a directory dovecot: Oct 10 02:03:11 Info: pop3(wail): mbox autodetect: data=/var/mail/wail dovecot: Oct 10 02:03:11 Info: pop3(wail): mbox autodetect: INBOX file: yes (/var/mail/wail) dovecot: Oct 10 02:03:11 Info: pop3(wail): mbox: data=/var/mail/wail dovecot: Oct 10 02:03:11 Info: pop3(wail): mbox: root exists (/home/wail.spb.ru/mail) dovecot: Oct 10 02:03:11 Info: pop3(wail): mbox: root=/home/wail.spb.ru/mail, index=/home/wail.spb.ru/mail, inbox=/var/mail/wail dovecot: Oct 10 02:03:11 Info: pop3-login: Login: user=<wail>, method=PLAIN, rip=82.146.63.23, lip=82.146.50.34 dovecot: Oct 10 02:03:13 Info: pop3(wail): Logout. top=0/0, retr=0/ del=0/3, size=5372 dovecot: Oct 10 02:03:20 Info: auth(default): client in: AUTH 1 PLAIN service=POP3 lip=82.146.50.34 rip=82.146.63.23 resp=AHdhaWwAVGxNSFRuUlI2 dovecot: Oct 10 02:03:20 Info: auth(default): client out: OK 1 user=wail dovecot: Oct 10 02:03:20 Info: auth(default): master in: REQUEST 4 53918 1 dovecot: Oct 10 02:03:20 Info: auth(default): master out: USER 4 wail uid=1050 gid=1032 home=/home/wail.spb.ru mail=/var/mail/wail dovecot: Oct 10 02:03:20 Info: pop3(wail): Effective uid=1050, gid=1032 dovecot: Oct 10 02:03:20 Info: pop3(wail): maildir autodetect: stat(/var/mail/wail/cur) failed: Not a directory dovecot: Oct 10 02:03:20 Info: pop3(wail): mbox autodetect: data=/var/mail/wail dovecot: Oct 10 02:03:20 Info: pop3(wail): mbox autodetect: INBOX file: yes (/var/mail/wail) dovecot: Oct 10 02:03:20 Info: pop3(wail): mbox: data=/var/mail/wail dovecot: Oct 10 02:03:20 Info: pop3(wail): mbox: root exists (/home/wail.spb.ru/mail) dovecot: Oct 10 02:03:20 Info: pop3(wail): mbox: root=/home/wail.spb.ru/mail, index=/home/wail.spb.ru/mail, inbox=/var/mail/wail dovecot: Oct 10 02:03:20 Info: pop3-login: Login: user=<wail>, method=PLAIN, rip=82.146.63.23, lip=82.146.50.34 dovecot: Oct 10 02:03:21 Info: pop3(wail): Logout. top=0/0, retr=0/ del=0/3, size=5372 dovecot: Oct 10 02:03:28 Info: pop3-login: Authenticate PLAIN failed: Unsupported authentication mechanism.: method=PLAIN, rip=82.146.63.23, lip=82.146.50.34 dovecot: Oct 10 02:03:30 Info: pop3-login: Aborted login: method=PLAIN, rip=82.146.63.23, lip=82.146.50.34 We see here two successfull logins with PLAIN and then suddenly PLAIN becomes unsupported. I run dovecot 1.0.alpha3 on FreeBSD 4.11, it was installed from ports and then I edited dovecot.conf (and created dovecot.passwd). Any help would be really appreciated. Sergey Redin.

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Re: [Dovecot] Dovecot Alpha 4
by Tomi Hakala 28 Oct '05

28 Oct '05

Marcus Don wrote: > How confident are you of the CVS? Any idea when the next (perhaps beta?) > release will be? I run CVS code most of the time, but only with handful of users and with them it has been working OK. I wouldn't use CVS code in production without thorough stress testing in a lab first. >>Have you thought of clustered file system to go with your Dovecot >>hosts and CLARiiON device? > I'm not sure why this would benefit us at the moment. Before we switched to > maildirs, the bottleneck we were experiencing at busy times was the ethernet > speed, not the storage device speed. > Is there another reason you suggested this? No, I'm just not very fond of NFS myself but it seems that for you it is doing job pretty well. Your CLARiiON is a normal SAN device and you have some singe host providing NFS? It didn't quite open to me how your mail spool is set up, is it some meta LUN distributed over two disk arrays or do you just have one huge LUN and mirror it between two arrays? -- Tomi Hakala

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[Dovecot] problem with thunderbird
by Alfonso Sparano 28 Oct '05

28 Oct '05

Hi all, I've a problem with thunderbird 1.0.6/7/1.5 and dovecot pop3 I've tried dovecot alpha 3 and 1.0 stable but neither one is capable of downloading mails. Nothing is written into the log. I've tried also to delete dovecot.index* and dovecot-uidlist into the Maildir directory. The cur directory contains more than 8100 messages (single files) Anyone has founded this problem? Alfonso

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[Dovecot] Corrupted index cache file [...] invalid record size
by Lorens 28 Oct '05

28 Oct '05

I get this error every single time some of my users log in: Error: POP3(${user}): Corrupted index cache file /${userdir}/dovecot.index.cache: invalid record size The named file seems to be deleted as soon as corruption is found. This only affects some users. I thought the affected users had in common that they are using POP3 in "leave-messages-on-server" mode, and that their mailboxes are big ( > 100 MB). However I've found a few counterexamples, few and far between (not every login) but still. Google's no help, for once :-) Could this be a locking problem, a bug with big Maildirs (counterexamples being few), or what? I know some of my users have had problems logging several IMAP clients into the smae account at the same time, wouldn't put it past some of those with problems to be trying the same with POP. I know that a detected cache corruption is merely that, but I find the error message annoying :-) Configuration: v1.0-stable (0.99.20050712-2 from debian unstable) Maildir only Default locking (nothing mentioned in conf file) Access over NFS mmap_disable = yes (wiki says to disable mmap to use indexes on NFS). Thanks for any pointers.

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[Dovecot] 1.0alpha3: assert and core
by Jeff A. Earickson 28 Oct '05

28 Oct '05

Hi, An assert and core with 1.0alpha3 on Solaris 9, mbox format, imap only, compiled with gcc 4.0.1. The syslog message was: imap(user): file message-body-search.c: line 393 (message_body_search_ctx): assertion failed: (input->v_offset <= part->physical_pos) gdb core dump analysis is attached. Jeff Earickson Colby College

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[Dovecot] hangup with corrupted indexes
by Sergey Redin 28 Oct '05

28 Oct '05

Hello everyone, I remember that Timo wrote in this maillist that if index files are corrupted, dovecot should be OK and just recreate it. So I report here a bug: I have corrupted indexes which make pop3 and imap processes to hangup right after the first list command. The process does not respond and eats 90% of CPU. Just unpack http://redin.info/dovecot-corrupted-index.tgz (10 Kb) into a user's IMAP root (I have mbox storage, but the same thing for maildir with this indexes), do the chown, and try to check the email. I know that the problem can be fixed by removing the index files or using INDEX=MEMORY, but it is claimed that dovecot is failsafe and can deal with any kind of corrupted index files. This is the only reason why I report it here. I have 1.0.alpha4 on FreeBSD 4.11 (installed from ports). Best regards, Sergey Redin.

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[Dovecot] Dovecot problems on Debian
by Jaldhar H. Vyas 28 Oct '05

28 Oct '05

If you have been bitten by bug #334180 and dovecot 1.0alpha3-2.0.1 rest assured the problem is being worked on. In the meantime you should downgrade to -2 which can be found at: http://snapshot.debian.net/archive/2005/10/08/debian/pool/main/d/dovecot/ -- Jaldhar H. Vyas <jaldhar(a)debian.org> La Salle Debain - http://www.braincells.com/debian/

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[Dovecot] Weirdness with authentication/1.0a4.
by Ashley Penney 28 Oct '05

28 Oct '05

Hi, FreeBSD has recently upgraded their port from 0.99 to 1.0a4, and this has caused me an absolute nightmare of a situation. In a nutshell I replaced my conf with the -example, and modified almost nothing. I made some SSL certs and put them in place, left it with imap/pop/pam etc. Whenever users tried to connect to the remote address, cara.untaken.net, I would get: Oct 27 18:31:14 cara dovecot: Dovecot v1.0.alpha4 starting up Oct 27 18:31:33 cara dovecot: imap-login: Login failed: Plaintext authentication disabled: rip=217.206.62.50, lip=217.206.62.50 Oct 27 18:31:33 cara dovecot: imap-login: Disconnected: rip=217.206.62.50, lip=2 17.206.62.50 However, plaintext authenication was most definitely not disabled. Using www.untaken.net/mail/ which is hosted on the same box as dovecot I could get this plaintext failure constantly using cara.untaken.net, but switching to 'localhost' instead would work fine, despite being the same physical machine. I'm baffled at what could cause this, I put my currently conf over at www.untaken.net/dovecot/ just for reference, I've modified various bits now from the default in a desperate attempt to get it working. Has anyone else seen anything like it? -- <EisernLint> i am considering taking pilates classes.

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[Dovecot] Authentication using native MySQL PASSWORD() function
by Tom Sommer 28 Oct '05

28 Oct '05

Hi, I have a little problem, I need to adapt a setup that currently uses the native MySQL PASSWORD() function to encrypt passwords for e-mail accounts. I plan on using Dovecot with SQL to authenticate on my server, is there a password scheme that fits this authentication method? Any help is appreciated -- Tom Sommer

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[Dovecot] Strange Disconnect Problem
by Marc Perkel 27 Oct '05

27 Oct '05

It's only happening with one user but for some reason I can't get this person logged in. And I'm using his ID on my computer and my ID works. Using two different IMAP clients. What would be causeing the "disconnected" to happen? dovecot: Oct 17 10:56:43 Info: imap-login: Login: user=<lowsley(a)cbsyellowpgs.com>, method=PLAIN, rip=65.37.192.182, lip=69.50.231.10 dovecot: Oct 17 10:56:47 Info: imap-login: Disconnected: user=<john(a)sembrot.com>, method=PLAIN, rip=204.95.16.61, lip=69.50.231.10

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