Your message dated Tue, 09 Sep 2025 13:05:43 -0700
with message-id <3101974.0vhOF50zNu@soren-desktop>
and subject line Re: Bug#364450: courier-imap-ssl: TLS/SSL session caching
conflicts with widespread MUAs
has caused the Debian Bug report #364450,
regarding courier-imap-ssl: TLS/SSL session caching conflicts with widespread
MUAs
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact [email protected]
immediately.)
--
364450: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=364450
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: courier-imap-ssl
Version: 3.0.8-13
Severity: normal
TLS/SSL session caching, an experimental feature, is activated by
default.
It causes issues with Mozilla Thunderbird MUA v1.0.7 and
v1.5.x, if the client uses SSL connection and 'Maximum number of server
connections' set set to a value higher than 1. The MUA's default setting
of this value is '5'. Please review
https://bugzilla.mozilla.org/show_bug.cgi?id=333661 and related bugs for
additional information on this issue.
I consider this a problem with courier-imap-ssl as
- this problem occurs only in combination with a server side
functionality marked as experimental
- is only known to occur incombination with courier-imap daemons
My suggestion for a fix is to deactivate session caching by default and
to add a note explaining which errors this may cause and/or to add a
link to the Mozilla bug ID where this issue is discussed:
https://bugzilla.mozilla.org/show_bug.cgi?id=333661
A better fix would be to make the imap daemon return an error message to
the client before disconnecting so the client is able to know why the
connection was dropped.
Thanks for investigating this.
-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (1,
'experimental')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.16-1-k7
Locale: LANG=de_DE@euro, LC_CTYPE=de_DE@euro (charmap=ISO-8859-15)
Versions of packages courier-imap-ssl depends on:
ii courier-imap 3.0.8-13 Courier Mail Server - IMAP server
ii courier-ssl 0.47-13 Courier Mail Server - SSL/TLS Supp
ii openssl 0.9.8a-8 Secure Socket Layer (SSL) binary a
courier-imap-ssl recommends no packages.
-- no debconf information
--- End Message ---
--- Begin Message ---
On Tuesday, September 9, 2025 12:50:16 PM Mountain Standard Time Moritz
Naumann wrote:
> Thanks for taking over, Soren.
>
> As discussed at https://bugzilla.mozilla.org/show_bug.cgi?id=333661#c15
> I stopped using courier-imapd in 2009, so I'm afraid I could not tell
> whether (or not) this is still an issue.
Thanks for your quick response. I think I will close this bug with the
assumption that it has been fixed by an upstream release in the intervening
years (I don’t personally experience problems with the current version of
Courier and Thunderbird). If anyone is still experiencing this issue feel
free to reopen the bug report.
--
Soren Stoutner
[email protected]
signature.asc
Description: This is a digitally signed message part.
--- End Message ---
