Filtering of mails causing mail readers to freeze

[Kenneth Andresen <ke...@cancun.net>]

Hello all,

I have been responsible for a mail server for some time whereas some of
the users are running Pegasus Mail. I have been noticing for months that
some spam messages render this email client unable to download e-mails,
and since they don't want to stop using Pegasus, I need a filter for
removing/modifying the bad messages. 

The part triggering the freeze seems to be the 

^@

ending of the mail. 

Attached is a mbox file with a sample only modified for receiving
address. 

I have never seen any legitimate mail with this ending, so I assume it
is some sort of spam/mass mailing software creating it, thus I believe I
should be able to simply send them all to /dev/null. However if this
might end be sent legit as well, I would like to make the messages
accepted by pegasus mail somehow.

thanks