March 2006 - dovecot - dovecot.org

[Dovecot] Busyloop in dovecot-auth
by Jorgen Lundman 04 Apr '06

04 Apr '06

SunOS pop01.unix 5.10 Generic_118844-26 i86pc i386 i86pc dovecot-1.0.beta3 Dovecot itself runs well, and was easy to confirgure with LDAP. However, I am seeing a cpu busy-loop in dovecot-auth. Is this a known issue, or do you know why it happens? If needed I can go deeper if so required. PID USERNAME LWP PRI NICE SIZE RES STATE TIME CPU COMMAND 26440 root 1 10 0 4232K 2096K cpu/0 40.9H 49.73% dovecot-auth # truss -fip 26440 26440: pollsys(0x08093E90, 10, 0x08047B90, 0x00000000) = 1 26440: pollsys(0x08047834, 5, 0x080477F8, 0x00000000) = 0 26440: pollsys(0x08093E90, 10, 0x08047B90, 0x00000000) = 1 26440: pollsys(0x08047834, 5, 0x080477F8, 0x00000000) = 0 26440: pollsys(0x08093E90, 10, 0x08047B90, 0x00000000) = 1 26440: pollsys(0x08047834, 5, 0x080477F8, 0x00000000) = 0 [snip] This is a test box, it has no load/users, except when I telnet to port 110 to test LDAP authentication. Lund -- Jorgen Lundman | <lundman(a)lundman.net> Unix Administrator | +81 (0)3 -5456-2687 ext 1017 (work) Shibuya-ku, Tokyo | +81 (0)90-5578-8500 (cell) Japan | +81 (0)3 -3375-1767 (home)

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[Dovecot] mbox-sync-update.c error
by Carlos Vicente 03 Apr '06

03 Apr '06

Hi, I think the problem is in Dovecot. I'm using both Evolution and Thunderbird on a Gentoo box. One of my folders keeps locking up and the clients can't retrieve the messages. The situation appears to be triggered by trying to move a message into that folder. Deleting the index files (under /var/log/dovecot/xxx/) solves the problem (temporarily). I get these error messages in the logs: Mar 31 15:10:34 dovecot: imap(cvicente): mbox sync: UID inserted in the middle of mailbox /home/xxx/Mail/xxx (93 > 3, seq=93, idx_msgs=3455) Mar 31 15:10:34 dovecot: imap(cvicente): file mbox-sync-update.c: line 55 (mbox_sync_move_buffer): assertion failed: (ctx->mail.offset + ctx->mail.space <= ctx->hdr_offset + pos || ctx->mail.offset > ctx->hdr_offset + pos + have) Mar 31 15:10:35 dovecot: child 32373 (imap) killed with signal 6 M I'm running dovecot-1.0_beta3 Hope this gets some attention from the developers. cv >In the maillog I get > > Mar 29 09:17:25 bree dovecot: imap-login: Login: user=<hartr>, > method=plain, rip=::ffff:127.0.0.1, lip=::ffff:127.0.0.1, secured > Mar 29 09:17:25 bree dovecot: imap(hartr): mbox sync: UID inserted > in the middle of mailbox /var/mail/hartr (8 > 1, seq=2, idx_msgs=4) > Mar 29 09:17:25 bree dovecot: imap(hartr): file mbox-sync-update.c: > line 55 (mbox_sync_move_buffer): assertion failed: (ctx->mail.offset > + ctx->mail.space <= ctx->hdr_offset + pos || ctx->mail.offset > > ctx->hdr_offset + pos + have) > Mar 29 09:17:26 bree dove

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[Dovecot] postfix 2.3 SMTP AUTH and Outlook
by Antonin Karasek 01 Apr '06

01 Apr '06

Hi all, I just maked $SUBJECT to run. The main problem was, that in Dovecot are by default enabled only plain digest-md5 and cram-md5 authentication mechanisms. While MS Outlook knows only "LOGIN" mechanism. So, Outlook users wasn't able to use SMTP AUTH. The solution is to change a line in dovecot.conf: mechanisms = plain digest-md5 cram-md5 to: mechanisms = plain digest-md5 cram-md5 login I suggest Timo to change the default configuration, and the page http://wiki.dovecot.org/Authentication -- more precisely the line "LOGIN: Similiar to PLAIN, not very useful. [in 1.0-tests only]" -- I think, that this line is a little confusing. Becouse since one can use Dovecot for SASL authentication, "LOGIN" is starting to be useful (because of the M*S* bullshit). Regards Tony

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[Dovecot] var_expand and pop3_logout_format
by Alexander Sabourenkov 01 Apr '06

01 Apr '06

Hi. -alpha2 broke the retr-byte-count field of the pop3_logout_format with the following change: -Added %R (reverse string) and %H (hash string) variable modifiers. %R as modifier conflicts on expand with %R as retr-byte-count in pop3_logout_format resulting in expanded strings like: top=0/0, retr=1/ del=0/1, size=431 seen in -alpha3 -alpha4 cvs as of 04.11.2005 FreeBSD 5.4-R, both i386 and amd64 -- ./lxnt

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[Dovecot] Repot: Problems with Fedora core 5, Dovecot and Thunderbird - is this a Dovecot bete3 bug?
by Robert Hart 31 Mar '06

31 Mar '06

Hi One Wed I posted the following message and have had no replies. I am reposting as I think this is a Dovecot bug but I am not sure. If anyone can assist on this I'd be most grateful. Tks ----------------------------------------------------- Hi I am testing FC5 before upgrading my main server and I am getting errors with dovecot 1.0 beta3 - both the distributed RPM and also the one at ATrpms and thunderbird (the distributed version which is thunderbird-1.5-6) I am running both dovecot and thunderbird on the same machine, pointing thunderbird at 127.0.0.1 for its imap server. The symptoms are an inability to access mail - thunderbird just keeps on trying and getting nowhere and even if I shut down thunderbird on the client, it still leaves processes running that have to be killed by hand. In the maillog I get Mar 29 09:17:25 bree dovecot: imap-login: Login: user=<hartr>, method=plain, rip=::ffff:127.0.0.1, lip=::ffff:127.0.0.1, secured Mar 29 09:17:25 bree dovecot: imap(hartr): mbox sync: UID inserted in the middle of mailbox /var/mail/hartr (8 > 1, seq=2, idx_msgs=4) Mar 29 09:17:25 bree dovecot: imap(hartr): file mbox-sync-update.c: line 55 (mbox_sync_move_buffer): assertion failed: (ctx->mail.offset + ctx->mail.space <= ctx->hdr_offset + pos || ctx->mail.offset > ctx->hdr_offset + pos + have) Mar 29 09:17:26 bree dovecot: child 14242 (imap) killed with signal 6 When I point this thunderbird at my main (dovecot 0.99) server everything is fine, which seems to suggest that this is a dovecot problem and not a thunderbird one. Can anyone give me any pointers on this please as it's a show stopper for upgrading my main server. Tks -- Robert Hart hartr(a)interweft.com.au +61 (0)438 385 533 http://www.hart.wattle.id.au

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[Dovecot] Courier to Dovecot Maildir converstion
by Jeff S. 31 Mar '06

31 Mar '06

Hello, I am running Dovecot 0.99 on OpenSuse 10.0. Previously, I was running courier IMAP with vpopmail on Suse 9.3. In the process of the change, I decided to sing MySQL to authenticate the users, provide home dir, uid and gid. I tar'ed up the old mail directories, moved them to the new server, added a new user and group to own the files, set the files uid/gid to match the values in the db. Next, I followed the Migration directions on http://wiki.dovecot.org/Migration. I can successfully authenticate the new users, have no errors in the log file but when I am logged in I only see the Inbox. There should be other folders as well as mail in the inbox. No errors in the log files. Any ideas?

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[Dovecot] Authentication Problem MD5 hashs
by Fabrizio Steiner 31 Mar '06

31 Mar '06

Hello I've migrated to dovecot-1.0beta3 and I have taken over the password files from an older system. For some reason the md5 hashs have "[" chars in the salt. For example like this $1$[xxxXX[E$bg/d4JdSSf2kTL8sXXxXXX Now the problem is that in the file src/auth/db-passwd-file.c on line 43 for libpam-pwdfile compatibility it will be searched for "[" to find the type of the password hash. Then only the hash up to this point will be used in future for comparing the passwords. The problem line. p = pass == NULL ? NULL : strchr(pass, '['); I changed the behavior to always use the complete hash out of the file because I don't use pam. Does anyone know if [ chars are allowed in md5 hashs? Kind Regards Fabrizio Steiner

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[Dovecot] problem with IMAP authentication with Thunderbird in local network
by Marco Ceccarelli - tnx.it 31 Mar '06

31 Mar '06

I've installed dovecot in our debian and when i login from localhost it work. when we try from our local network it give an error as this: Mar 31 11:25:27 linux2 dovecot: auth(default): client out: FAIL^I1^Iuser=mcecccarelli Mar 31 11:25:27 linux2 dovecot: auth(default): client in: AUTH^I2^IPLAIN^Iservice=IMAP^Ilip=192.168.0.105^Irip=192.168.0.115^Iresp=AG1jZWNjY2ZWxsaQBzZW5uYTk0 Mar 31 11:25:29 linux2 dovecot: auth(default): pam(mcecccarelli,192.168.0.115): pam_authenticate() failed: User not known to the underlying ahentication module Mar 31 11:25:31 linux2 dovecot: auth(default): client out: FAIL^I2^Iuser=mcecccarelli i see that whe i try to login from localhost it try with pam(mcecccarelli) when i try from local network it try with pam(mcecccarelli,192.168.0.115) what i have to configure to make authorized all ip from local network ?

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[Dovecot] Custom Quotas
by Andrew Barrow 31 Mar '06

31 Mar '06

Greetings I'm currently working on a design, to integrate an IMAP server into our existing mail architecture. It's proving to be a difficult exercise, mainly because of how we structure our quotas. In our system, the quota covers more than just email. We have a single quota that covers email, ftp directory, and personal homepage. The quota is stored in a mysql database, in a werid table structure. The quota allocation is stored against the user, while the quota usage is stored in 3 rows per user, in a seperate table; One row each for www, email, and ftp per user. I'm currently trying to figure out how we could integrate this quota into Dovecot. I'm quite happy to write plugin to handle updating the quota in our system, but I have no idea where to start. Any information you could provide on updating a quota in a third party system would be much appreciated. Thanks for you help. Andrew andrew(a)myinternet.com.au -- "If we don't have time to do it correctly now, will we have time to do it over once it's broken?" http://www.ranum.com/security/computer_security/editorials/dumb/

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[Dovecot] userdb prefetch not working for passdb sql
by dovecot-ri 31 Mar '06

31 Mar '06

Hi all, I'm using 1.0.beta3 and having problems using userdb prefetch in conjuction with passdb sql. Here are my mail logs when I log to virtual account "testuser(a)mydomain.com" by doing "telnet localhost 143": Mar 26 15:15:47 imapserver dovecot: Dovecot v1.0.beta3 starting up Mar 26 15:15:49 imapserver dovecot: auth-worker(default): mysql: Connected to (null) (mail) Mar 26 15:16:03 imapserver dovecot: auth(default): client in: AUTH 1 PLAIN service=IMAP secured lip=127.0.0.1 rip=127.0.0.1 resp=<hidden> Mar 26 15:16:03 imapserver dovecot: auth-worker(default): sql(testuser(a)mydomain.com,127.0.0.1): query: ***snipped, very long*** Mar 26 15:16:03 imapserver dovecot: auth(default): client out: OK 1 user=testuser(a)mydomain.com Mar 26 15:16:03 imapserver dovecot: auth(default): master in: REQUEST 1 16001 1 Mar 26 15:16:03 imapserver dovecot: auth(default): passwd(testuser(a)mydomain.com,127.0.0.1): unknown user Mar 26 15:16:03 imapserver dovecot: auth(default): prefetch(testuser(a)mydomain.com,127.0.0.1): userdb_uid not returned Mar 26 15:16:03 imapserver dovecot: auth(default): prefetch(testuser(a)mydomain.com,127.0.0.1): userdb_gid not returned Mar 26 15:16:03 imapserver dovecot: auth(default): userdb(testuser(a)mydomain.com,127.0.0.1): user not found from userdb Mar 26 15:16:03 imapserver dovecot: auth(default): master out: NOTFOUND 1 Mar 26 15:16:03 imapserver dovecot: imap-login: Internal login failure: user=<testuser(a)mydomain.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured The MySQL query is long and complicated, but here's what it returned when I copied and pasted it into mysql: user testuser(a)mydomain.com password {SSHA}BRuPgonpb8Zd+0NaFH2G6dT47m3mT43w userdb_home /var/mail/mydomain.com/testuser userdb_uid vmail userdb_gid vmail All of these values are correct. It seems to be ignoring the userdb_* fields. It works when I don't use prefetch, and it also works when I do use prefetch but change the SQL query to return "testuser" instead of "testuser(a)mydomain.com" in the user field. Anyone know why? Here's my dovecot.conf in case it proves useful: first_valid_uid = 900 mail_debug = yes default_mail_env = maildir:%h/.maildir maildir_copy_with_hardlinks = yes protocol imap { login_greeting_capability = yes } protocol pop3 { } auth_verbose = yes auth_debug = yes auth default { mechanisms = plain passdb sql { args = /etc/dovecot/dovecot-sql.conf } passdb pam { args = "*" } userdb passwd { } userdb prefetch { } user = root } plugin { } Thanks!

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