[Kolab-devel] [issue2439] Explanation in the section Mail Filter Settings on the services tab not clear

[Richard Bos]

New submission from Richard Bos <ml at radoeka.nl>:

On the services tab, in the =Mail Filter Settings= section, the text is
on a very high subject matter level....

This text e.g.:

- Check messages for mismatching From header and envelope from.

would be easier to understand if there is an example available, like:

Received: from doto.intevation.org (localhost [127.0.0.1])
        by lists.intevation.de (Postfix) with ESMTP id 6B2EC600D57
        for <kolab-devel at kolab.org>; Fri,  1 Feb 2008 11:09:19 +0100 (CET)
To: kolab-devel at kolab.org
From: Kolab User <kolab-issues at intevation.de>
---------------------


To what "above checks" does this line refer to?
- Use the Sender header instead of From for the above checks if Sender 
is present.
----------------------


Action to take for messages that fail the check:

o Reject the message with the except if it originates from the outside 
but has a From header that matches the Kolab server's domain. In that 
case rewrite the From header so the recipient can see the potential forgery.

<<<< In the above line, there is an error "except", should be "exception".
-------------

o Always reject the message. Note that enabling this setting will make 
the server reject any mail with non-matching sender and From header if 
the sender is an account on this server. This is known to cause trouble 
for example with mailinglists

<<<<  "if the sender is an account on this server"
That seems wrong.

Why does this cause trouble with mailinglist?  Doesn't the emaillist have the
same From header as enveloppe (the emaillist has probably list.domain.tld).  it 
would be nice if this is also explained with an example.

----------
messages: 13529
nosy: rbos
priority: urgent
status: unread
title: Explanation in the section Mail Filter Settings on the services tab not clear
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