Bug 79227

Summary:	Connection to IMAP-server fails with 'connection is broken' on some folders
Product:	[Unmaintained] kmail	Reporter:	Koen <cudeso>
Component:	IMAP	Assignee:	kdepim bugs <kdepim-bugs>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Gentoo Packages
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	ethereal log

Description Koen 2004-04-07 12:49:36 UTC

Version:            (using KDE KDE 3.2.2)
Installed from:    Gentoo Packages
Compiler:          gcc version 3.3.2 20031218 (Gentoo Linux 3.3.2-r5, propolice-3.3-7) 
OS:          Linux

I have several (6) identities connecting to 6 different IMAP-accounts (all on the same Courier-IMAP server on the LAN). Authentication for imap is with SSL, smtp is with no-authentication.

I'm having trouble with +/ 10 folders (out of the +/-100) in the mailaccounts.

When I click these folders in the folderlist I get : 'connection to host xxx is broken'. At first I thought this had to do with the foldernames (being 'spam' and 'gentoo') but the other folders have random names that don't relate to anything that could possibly harm Kmail. These folders contain between 5 an 1300 e-mail-messages.

I'm also using Thunderbird and Evolution to read these mailfolders. I don't have any of these problems so I guess it's clearly a Kmail-problem. I've had extensive logging on the mailserver but as far as I can tell there's no error-message whatsoever on the mailserver. 

I'm guessing this could have something to do with Kmail caching to much IMAP-connections. For example in Thunderbird there's the possibility to restrict the number of cached IMAP-connections..when I set this to 5 per mailbox I'm getting an equivalent error. When I'm using 2 caching connection there's no problem. Unfortunately, this 'feature' is missing in Kmail (or I am not seeing it).

Comment 1 Carsten Burghardt 2004-04-07 22:29:16 UTC

On Wednesday 07 April 2004 12:49, Koen wrote:
> I have several (6) identities connecting to 6 different IMAP-accounts (all
> on the same Courier-IMAP server on the LAN). Authentication for imap is
> with SSL, smtp is with no-authentication.
>
> I'm having trouble with +/ 10 folders (out of the +/-100) in the
> mailaccounts.
>
> When I click these folders in the folderlist I get : 'connection to host
> xxx is broken'. At first I thought this had to do with the foldernames
> (being 'spam' and 'gentoo') but the other folders have random names that
> don't relate to anything that could possibly harm Kmail. These folders
> contain between 5 an 1300 e-mail-messages.

Can you provide an ethereal log of the connection when you get this error?


Carsten

Comment 2 Koen 2004-04-08 14:43:06 UTC

>Can you provide an ethereal log of the connection when you get this error?
>

I will provide a log but further investigation learned me that two of the 10 
folders that I tried to access are corrupt. I can't find any other problems 
on this (nearly new) hard-disc and I'm pretty sure this has either to do 
with a malfunction of Courier-IMAP or me accessing the folder with both 
KMail, Evolution and Thunderbird at the same time. I'm trying to narrow down 
the problem to the folders that are not corrupt and are not accesible by 
KMail. As soon as I have result (guess a day or two) I'll send an update.

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Comment 3 udok 2004-06-29 03:12:07 UTC

Created attachment 6503 [details]
ethereal log

same problem here :
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=256717

I use the same imap server (courier-imap from sid)
I test with kmail 3.2.2 from debian sid and kmail 3.2.1 from suse 9.1 : same
problem.
No problem with mutt and mozilla-thunderbird.
The problem occurs randomly and very often.
I use /etc/passwd for authentification (no ldap, mysql or other)
I don't use ssl.

I join the ethereal log : this is just the part of the log when I get the
error.

Comment 4 udok 2004-06-30 13:47:15 UTC

you can forget my report.
Indeed, thunderbird and mutt have finally the same problem, but they doesn't display any error messages about it, so I didn't notice it immediatelly.
The bug is with courier-imap.

Comment 5 Till Adam 2004-06-30 16:37:16 UTC

Courier bug, according to the reporter.