- dovecot - dovecot.org

[Dovecot] Excessive imap-login and pop3-login processes
by Ben Beuchler 08 Nov '04

08 Nov '04

I'm running a Linux mail server with Postfix and Dovecot. I've noticed that the number of "imap-login" processes usually sits around 240, and "pop3-login" usually around 50 or so. The comments in the config file seem to indicate that, with my setup, I shouldn't see more than about 10 of each. Am I misunderstanding the config or is this expected behavior? login_process_per_connection = no login_processes_count = 10 login_max_processes_count = 128 login_max_logging_users = 256 The mail server receives about 1.5 - 3 logins per second and usually has around 75 simultaneous IMAP sessions. There are rarely more than 1 or 2 simultaneous POP3 sessions open. Thanks... -Ben -- Ben Beuchler There is no spoon. insyte(a)emt-p.org -- The Matrix

1 0

[Dovecot] dovecot 1.0-test52 build notes
by Mark E. Mallett 08 Nov '04

08 Nov '04

I thought I would try to use 'configure' to lay out the dovecot install a little differently than the default. I prefer all the support files under one tree (e.g. in /usr/local/lib/dovecot-1.0) rather than distributed around the filesystem. And I'd be happiest if all of the support files were just at that top level rather than in subdirectories. e.g.: /usr/local/lib/dovecot-1.0/dovecot.conf /usr/local/lib/dovecot-1.0/imap-login /usr/local/lib/dovecot-1.0/dovecot-auth etc. (I'm happy to have a "doc" subdirectory though.) And ideally I'd have the primary executable installed in a more generic place, but tagged with its version number, like /usr/local/sbin/dovecot-1.0 Note that I'm not suggesting this, just explaining what I am after. So the second to last thing I tried was: --program-suffix=-1.0 \ --bindir=/usr/local/lib/dovecot-1.0 \ --sbindir=/usr/local/lib/dovecot-1.0 \ --libexecdir=/usr/local/lib/dovecot-1.0 \ --sysconfdir=/usr/local/lib/dovecot-1.0 \ --datadir=/usr/local/lib/dovecot-1.0 \ --localstatedir=/usr/local/lib/dovecot-1.0 \ But that didn't really work, for the reasons listed in the "last" try below, plus all of the executables got the "-1.0" suffix, not just the "dovecot" program (not a big surprise..). And the last thing I tried: --bindir=/usr/local/lib/dovecot-1.0 \ --sbindir=/usr/local/lib/dovecot-1.0 \ --libexecdir=/usr/local/lib/dovecot-1.0 \ --sysconfdir=/usr/local/lib/dovecot-1.0 \ --datadir=/usr/local/lib/dovecot-1.0 \ --localstatedir=/usr/local/lib/dovecot-1.0 \ which kinda got me where I wanted, except that if I want a dovecot-1.0 executable in /usr/local/sbin I need to add that by hand, and also that the build process added another subdirectory "dovecot": /usr/local/lib/dovecot-1.0/dovecot/ I can (and did) manually remove that final directory and flatten out the tree, and fortunately you've made it possible to specify in dovecot.conf the paths to all the executables and so forth. But it would be nice to be able to create this desired layout entirely via configure and not have to move things around after the fact. Is that even possible? Obviously, don't spend a lot of time on it.. but if I'm missing an option that would get me where I want, I'd be interested in knowing about it. Oh, and "strings src/master/dovecot | grep /usr/local" gives this: /usr/local/lib/dovecot-1.0/dovecot.conf /usr/local/lib/dovecot/imap /usr/local/lib/dovecot-1.0/dovecot/imap /usr/local/lib/dovecot-1.0/run/dovecot /usr/local/lib/dovecot-1.0/dovecot/dovecot-auth /usr/local/lib/dovecot-1.0/dovecot/imap-login /usr/local/lib/dovecot-1.0/dovecot/pop3-login /usr/local/lib/dovecot-1.0/dovecot/pop3 /usr/local/lib/dovecot/pop3 So it looks like there are a couple of places where the configured paths aren't caught (or so it would seem). Yours, -mm-

2 2

[Dovecot] dovecot 1.0-test52 compile notes
by Mark E. Mallett 08 Nov '04

08 Nov '04

Compile issues on an older BSD/OS 4.2 system: src/lib/byteorder.h needs #include <netinet/in.h> to pick up in_addr struct src/lib/byteorder.c no "libgen" here (no basename()). Added it inline, no big deal, but you might want to have configure test for this and provide one if it's missing. Also, on this system there are no types like "uint8_t" and "uint64_t" -- instead there are the u_int8_t and u_int64_t et al types. I added some global typedefs, but I gather this is a somewhat common issue, so you might want to test for these. -mm-

2 2

[Dovecot] Runas Question
by Chris L. Franklin 08 Nov '04

08 Nov '04

Okay heres a weird question is there anyways to make dovecot run as root ? Heres why: I'm currently using XMail email server (smtp/pop3/virtual accounts). And I love using it. But it really must run as root. I've tryed all the non-root solutions for it. and really I'd prefer to have it run as root. And I'd like to really use dovecot as (on server with xmail). Currently I've got it running with some sendmail server and a few postfixs But really I'd like to get it working with Xmail. So if anyone has any Ideas or how to get Dovecot to run as root. PS. I know the Idea behind dovecot is security and how it's coded to be able to run using non-root accont. So please I'm really only looking for ways to get dove to run as root. And not new ways of reconfiguring my smtp servers so as they don't need to be run as root. -- Chris L. Franklin --

2 1

[Dovecot] strange timeout with ssl
by Arnaud Lacroix 08 Nov '04

08 Nov '04

Hello, First sorry for my poor english. slack 9.1 dovecot-0.99.11 (thanks for this) compiled with openssl (0.9.7b) MUA : Mozilla 1.5 (win32) Under a ssl session, at first, it's work. But a later ago, i recieved alway, when i tried to contact the server imap : "connecting to <host> timed out ..." This fact is never without ssl. No dns problems. I don't know how can i help you my best because i don't see the problem. So, i give you this information. Hope it will be help you for a solution. But its seem to be ok. #openssl s_client -host localhost -port 993 -verify -debug ... ... --- SSL handshake has read 841 bytes and written 340 bytes --- New, TLSv1/SSLv3, Cipher is AES256-SHA Server public key is 1024 bit SSL-Session: Protocol : TLSv1 Cipher : AES256-SHA Session-ID: ED349971D46EC76E2F75BB80ED52A0D081CE10B609F4761E176361629C9AE6AD Session-ID-ctx: Master-Key: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Key-Arg : None Start Time: 1099614038 Timeout : 300 (sec) Verify return code: 18 (self signed certificate) --- * OK dovecot ready. // timeout : * BYE Disconnected for inactivity. read:errno=0 Thanks very much. Regards, Arnaud Lacroix.

4 4

[Dovecot] Unread mail problem
by Clinton Mills 08 Nov '04

08 Nov '04

Okay, here is the set up. I have Outlook set up to keep mail on the server for 5 days. At some point I started downloading all my mail that was on the server over and over again, even though I already have the mail. The weird thing is that it did not download all the mail, just a few. For example it would download 6 messages, then 18, then 12, etc! After I tried it a few times I had 50 of the same message in Outlook? A small fix, but I do not want to so this ever time If I unclick save on server and then check my mail, it will delete all the mail in my mail box. Then I reclick the leave on server for 5 days and it will work fine! Any idea what is going on? Clinton Hitcents.com Tel: (270) 796-5063 ext 105# Fax: (270) 796-3195 Cell: (270) 996-1122

2 1

[Dovecot] 1.0-test52 - assertion failed
by Tom Sommer 06 Nov '04

06 Nov '04

Clicked on a folder in Thunderbird and got this in the log: Nov 6 22:49:11 one dovecot: imap-login: Login: ts(a)dreamcoder.dk [10.24.0.1] Nov 6 22:49:11 one dovecot: IMAP(ts(a)dreamcoder.dk): Corrupted index cache file dreamcoder.dk/ts/Maildir/.INBOX.Mailing Lists.bugzilla/dovecot.index.cache: indexid changed Nov 6 22:49:11 one dovecot: IMAP(ts(a)dreamcoder.dk): file mail-cache-fields.c: line 338 (mail_cache_header_fields_get): assertion failed: (buffer_get_used_size(dest) == sizeof(hdr) + (sizeof(uint32_t)*2 + 2) * hdr.fields_count) Nov 6 22:49:11 one dovecot: child 469 (imap) killed with signal 6 -- Tom

1 0

RE: [Dovecot] Unread mail problem
by Mark Lidstone 03 Nov '04

03 Nov '04

Hi Clinton, I've come across the same problem several times before - Outlook keeps messing up it's list of seen UIDLs. Try using Thunderbird instead. I moved a load of people in our company to Thunderbird because they kept having that problem and it's not happened for them since. As a matter of interest - I've seen both Outlook and Outlook Express do this on dovecot, mercury/32 and Exchange (when using pop3 for pickup). I hope this helps, Mark Lidstone IT and Network Support Administrator BMT SeaTech Ltd Grove House, Meridians Cross, 7 Ocean Way Ocean Village, Southampton. SO14 3TJ. UK Tel: +44 (0)23 8063 5122 Fax: +44 (0)23 8063 5144 E-Mail: mailto:mark.lidstone@bmtseatech.co.uk Website: www.bmtseatech.co.uk ======================================================================== == Confidentiality Notice and Disclaimer: The contents of this e-mail and any attachments are intended only for the use of the e-mail addressee(s) shown. If you are not that person, or one of those persons, you are not allowed to take any action based upon it or to copy it, forward, distribute or disclose the contents of it and you should please delete it from your system. BMT SeaTech Limited does not accept liability for any errors or omissions in the context of this e-mail or its attachments which arise as a result of Internet transmission, nor accept liability for statements which are those of the author and not clearly made on behalf of BMT SeaTech Limited. ======================================================================== == -----Original Message----- From: Clinton Mills [mailto:clinton.mills@hitcents.com] Sent: 03 November 2004 14:13 To: dovecot(a)dovecot.org Subject: [Dovecot] Unread mail problem Okay, here is the set up. I have Outlook set up to keep mail on the server for 5 days. At some point I started downloading all my mail that was on the server over and over again, even though I already have the mail. The weird thing is that it did not download all the mail, just a few. For example it would download 6 messages, then 18, then 12, etc! After I tried it a few times I had 50 of the same message in Outlook? A small fix, but I do not want to so this ever time If I unclick save on server and then check my mail, it will delete all the mail in my mail box. Then I reclick the leave on server for 5 days and it will work fine! Any idea what is going on? Clinton Hitcents.com Tel: (270) 796-5063 ext 105# Fax: (270) 796-3195 Cell: (270) 996-1122

1 0

[Dovecot] [PATCH] yet another NTLM update
by Andrey Panin 02 Nov '04

02 Nov '04

Hello, after more than week using dovecot as exim4 authentication backend, I noticed that some strange clients send type 3 messages with LM response only. Attached patch allows them to log in. Please consider applying. Best regards. -- Andrey Panin | Linux and UNIX system administrator pazke(a)donpac.ru | PGP key: wwwkeys.pgp.net

2 2

[Dovecot] Logging and libwrap
by Jesse 01 Nov '04

01 Nov '04

Hi, A few things regarding logging and libwrap.. a) PAM_RHOST patch Back in July, dean gaudet helpfully posted a patch to dovecot PAM_RHOST the remote IP. Is this going to be included in the main dovecot tree? It seems like a worthwhile addition. The more informative and concise the logging the better. See http://www.dovecot.org/list/dovecot/2004-July/004011.html for the original message. b) Better logging Is it possible to get logging of when a client connects and disconnects? I'm very used to seeing this information and it's very useful for debugging user sessions. It's frustrating not being able to easily tell whether a user has opened a connection. Really many of the log messages could be more verbose. For instance, on disconnect, I see imap-login: Disconnected [ip.here] but the username they were logged in as isn't included. It would be nice to have that rather than having to dig back for a login message with the same IP. Heck, even the pid isn't logged. That would be nice too. c) libwrap Any chance of getting libwrap support built into dovecot? Right now I'm running dovecot out of xinetd, so that I can see when tcp connections are opened, and take advantage of tcpwrappers. But this causes the problem that dovecot thinks all connections come from the local host. Correlating logins to IPs gets to be a lot of hassle, with the information divided over so many lines, while needing multiple ways to track which messages from xinetd, dovecot and pam match each other. With some of the minor logging changes (more info on one line, notification of tcp connections), plus libwrap, it'd be much simpler and much more informative. :) Thanks for the great imap server. Just thinking of some improvements. :) --- Jesse <j(a)lumiere.net>

2 2