SquirrelMail

@jangliss: Thanks a lot for the hint! That solved my problem!

If I remember correct, 1.5 uses a slightly different method. Go to Options
| Index Order, and make sure the "Date" field is added, and not the
"Received Date". Also, the default sort will be by INTERNALDATE (or as you
call it file date). If you want to change it, simply click the [] next to
the "Date" field.

I can understand that but I have 2 comments:

1. The file date was changed since I was forced to move my mail server and
had to copy all the files (what changed the file date)

2. My suggestion was to make the behavior configurable (for example via
the options menu) in order to allow the user to decide if to use the "old"
SM 1.4 behavior or the "new" SM 1.5. behavior.

From my point of view this behavior will prevent me from upgrading to SM
1.5. as I will not be able to get the correct date when the mail was
received.

SquirrelMail 1.5 displays and sorts mail using the INTERNALDATE given by
the IMAP server, which is exactly the file date under most circumstances.
This is because caching headers for large mailboxes is much, much faster
when just stat'ing files compared to opening each file and parsing out the
Date header. The only reason that date would be wrong would be if you
manually altered the file for some message - otherwise the file's date
should correspond to its date of delivery ("Received Date").

I'm using courier-imapd-ssl (4.3.0. 200810271-ubuntu1).

In SM 1.4. the correct date ( Feb 3, 2009 ) is displayed in SM 1.5 the
file date (Apr 12, 2009) is displayed - this is the source of the mail (but
all other mails are effected as well):

Message-ID: <4988A8F9.8070507@24speed.at>
Date: Tue, 03 Feb 2009 21:28:41 +0100
From: x@y.z
Reply-To: x@y.z
User-Agent: Thunderbird 2.0.0.19 (X11/20090105)
MIME-Version: 1.0
To: x@y.z
Subject: as
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Content-Transfer-Encoding: 7bit


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sig

You didn't include any details that can help narrow down the problem. For
starters, we need to know the details of your IMAP server. Then, you need
to send the full message source of an offending message (and which dates
are shown in each version). You can use the message details plugin to get
the full message source or just include the file itself if you know where
to find it.