March 2004 - dovecot - dovecot.org

[Dovecot] RE: Lock problem - take 2
by Alex S Moore 21 Mar '04

21 Mar '04

I deleted the index folder to fix a lock problem described on my previous post. I still cannot access the folder. Now, I have a file in the maildir folder named dovecot-uidlist.lock that must be corrupt. How do I fix this? I can remove this particular maildir folder and there is no great loss. But I want to know how to fix it, in case this problem occurs on an important folder. Thanks, Alex

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[Dovecot] RE: Locking problem
by Alex S Moore 20 Mar '04

20 Mar '04

Running dovecot on Solaris 8 sparc with SylpheedClaws as the MUA. I tried moving to many messages from a folder to my maildir folder, which is a local directory on the dovecot server. Now, I cannot open the folder due to this message: 'Mar 20 10:26:15 sws601.mcsun.local imap(amoore): [ID 702911 mail.error] Timeout while waiting for release of shared fcntl() lock for index file /var/indexes//amoore/.Spam.Spam Archive/.imap.index' How do I get the lock released? I changed some timeout settings in dovecot.conf, but that did not help. Every time that I click this particular folder in my MUA, the screen locks up. Thanks, Alex

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[Dovecot] Case insensitive user names
by andrew fresh 19 Mar '04

19 Mar '04

I am trying to set up the Dovecot pop3 server for some virtual hosting I am doing and it is going well, I am generating a passwd file that points dovecot to the virtual users mailspool. The only thing that I don't have working is that my current pop3 server (NTMail) has case insensitve usernames. Dovecot doesn't. I was hoping there was just an option to turn on, but I didn't see one, and unfortunately I don't know enough C to change to lc($submitted_user) eq lc($database_user) like I would in perl :-) I do have control over generating the passwd file, and it is currently generating the users to lowecase in the file, so just lc($submitted_user) eq $database_user would work well enough. Unfortunately I don't know enough C to do that, so I thought I would ask if anyone has done this. So, does anyone have any ideas on how to do this? Thank you, -- andrew /---------------------------------------------------------------------\ | ICQ# | Proud Member of Mad-Techies.org | | 253198 | http://www.mad-techies.org | |---------------------------------------------------------------------| | There are two ways to write error-free programs; | | only the third one works. | \---------------------------------------------------------------------/

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[Dovecot] chdir() on NFS
by Christian Andersen 19 Mar '04

19 Mar '04

Hi, I'm having problems accessing home directories though NFS. This setup uses LDAP and Kerberos. Users defined on the local host work fine. This is what dovecot writes in the logs while trying to log in as the user johndoe: ---- Mar 19 14:10:54 jack dovecot-auth: nss_ldap: reconnecting to LDAP server... Mar 19 14:10:54 jack dovecot-auth: nss_ldap: reconnected to LDAP server after 1 attempt(s) Mar 19 14:10:54 jack imap-login: Login: johndoe [10.0.0.30] Mar 19 14:10:54 jack dovecot: chdir(/home/johndoe) failed: Permission denied Mar 19 14:10:54 jack dovecot: child 3525 (imap) returned error 89 ---- The authentication is OK, but dovecot fails to get access to the home directory. What username does dovecot try to chdir() as? If I 'su' from to that user I have access to /home/johndoe, and a quick test with Courier IMAP worked fine. Postfix has no problem delivering mail in the users maildir using procmail. Some relevant config options: default_mail_env = maildir:~/mail:INDEX=/var/indexes/%n auth_userdb = passwd auth_passdb = pam auth_user = root -- Christian Andersen <http://phuzz.org>

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RE: [Dovecot] Dovecot failing silently on startup
by Julian Melville 19 Mar '04

19 Mar '04

> Can you do an strace of a running dovecot process so we can > get a better idea? (You ought to cc the list as well.) Sorry for the slow reply, it's taken me a few days to get back to this and observe the problem again. I've placed a tarball of the output of "strace -ff -o dovecot dovecot" here: http://rimu.tiddly-pom.com/dovecot-strace.tar.gz To my (admittedly untrained) eye, it's looking for and not finding /etc/ld.so.nohwcap, and then repeatedly not finding /var/run/dovecot/ssl-parameters.dat. At that point there is a /var/run/dovecot/ssl-parameters.dat.tmp - is that where the SSL stuff is being generated? Is it just that Dovecot is stalled until the ssl-parameters.dat file appears? Thanks, Julian.

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[Dovecot] duplicate mails
by Neal D. Becker 18 Mar '04

18 Mar '04

I run kmail and use it to automatically sort my mails to various imap folders (using kmail's disconnected imap). If I fire up a second instance of kmail (e.g., @work + @home) then both will do this, and I wind up with 2 copies of each mail. Can dovecot be taught to discard duplicate mail ids, or maybe some other mechanism to avoid this problem?

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[Dovecot] triggering multiple actions on pop-3 request
by Eric S. Johansson 17 Mar '04

17 Mar '04

I want to trigger fetchmail when a user makes a pop-3 request. The reason for this is so that the messages retrieved by fetchmail can be filtered via an anti spam service before depositing them into the inbox. The way I figure it, since I need to know who the user is and that they authenticated in order to make the correct fetchmail call, I need to spawn the fetchmail process somewhere between the authentication and the pop 3 process. since I'm currently unfamiliar with code at that level, could I get a suggestion as to where to start looking?. apologies if I haven't explained is clearly enough. I'm still just kind of exploring the idea myself to see if it's the right way to approach this problem (pop 3 anti spam Gateway). If it works out right, it may even end up as part of a firewall (IPCop) as a way of making anti spam trivially easy for the technically challenged. (I.e. put it in a box, said it up right, don't let them touch it) I know it is also somewhat off topic for the group but since I want to modify dovecot (the IMAP server that rescued me from UW), I figured I would give it a shot. thanks in advance, ---eric

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[Dovecot] Corrupted Indexes and File Permissions
by Dominic Marks 16 Mar '04

16 Mar '04

Hello, I'm using Dovecot to provide an IMAP service to a small number of users and I'm seeing two recurring errors which look like they might be related. Environment: o FreeBSD 5.2.1 / Postfix 2.0.18 / Dovecot 0.99.10.4 o Maildir mailboxes Problem: On logging in all the folders under the users mailbox are empty. This has happened with both MS Outlook 2000 clients as well as Squirrelmail which uses c-client. When you look at the mail log it shows errors from Dovecot about index file corruption and file permissions (see attached sample section). I've checked the permissions on the maildir and it seems at the moment that the user has rw permssion on every file under cur, could this error be caused by an interaction between Postfix and Dovecot? Any comments / suggestions greatly appreciated, -- Dominic Marks

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[Dovecot] index file corruption
by mat＠reynerie.org 16 Mar '04

16 Mar '04

Hi, I'm using Dovecot (dovecot-0.99.10p0) on OpenBSD-3.4 for few weeks now. When i connect to my IMAP account the connection is often closed by dovecot when i try to delete mails. I can see messages like this in log: Feb 29 18:47:00 po imap(mat(a)reynerie.org): Corrupted binary tree file /home/mat/Maildir//.INBOX/.imap.index.tree: used_file_size larger than real file size (1772 vs 1556) I tried to remove all index files, but the problem still occur. I also tried Maildir and Mbox, same problem (i can't remember if the log are similar with mbox, if needed i will test again). I have ktraced the imap process and try (succesfully) to reproduce this behaviour: I have re-send a lot of spam and delete few of them from mailbox until the problem occur. All logs/kdump/config are here: http://mat.reynerie.org/dovecot/ In the kdump file, the problem is visible at the end, Dovecot is compiled (via ports) with: env CFLAGS="-I/usr/local/include -L/usr/local/lib" CONFIGURE_ARGS="--with-ldap --with-ldap-includes=/usr/local/include --with-ldap-lib=/usr/local/lib" make Searching the mailing list archives, i have not found any solutions. -- mat

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Re: [Dovecot] Mysql patch question
by Skye Poier 16 Mar '04

16 Mar '04

Last question of the day I promise :) If dovecot is configured to use the MySQL patch, ie: auth_userdb = mysql /path/to/dovecot-mysql.conf auth_passdb = mysql /path/to/dovecot-mysql.conf Its not possible to "chain" authentication methods is it? I mean, if its using MySQL it _cannot_ be configured to check passwd (via "pam *") first, and then check mysql, right? So, if I want to support real shell users (who are in /etc/passwd) I will have to have them in mysql along with the "virtual" users. ...... OK I lied, one more question! I love the feature that you can login with a username user@domain and the domain is automatically parsed out. Do these options have anything to do with the @domain part (referred to as a realm in auth.txt) or are they for something else completely? I'm not sure what SASL is that it refers to in the example .conf #auth_realms = #auth_default_realm = Thanks, Skye

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