[pmmail-list] Filtering with POPFile

[James Moe]

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On Mon, 08 Sep 2003 11:23:33 -0400, John Swartzentruber wrote:

>>This is a very good point I hadn't considered.  It makes my decision
>>difficult, because I really like the magnets.  I'll ask my friends
>>if they use Outlook or Exchange, and perhaps demagnetize them if
>>so.
>
>But is this sufficient? What if they aren't using Outlook, but are in
>the address book of someone who is? Couldn't they be spoofed as the
>sender and still be processed as a magnet?
>
  You could add another filter that checks the header for the "X-Mailer" or 
"X-Newsreader" line. A typical pmmail x-mailer looks like

    X-Mailer: PMMail 2000 Professional (2.20.2717) For Windows 2000 (5.0.2195;4)

and samples from a newsgroup
    X-Mailer: Microsoft Outlook Express 6.00.2800.1158
    X-Newsreader: Microsoft Outlook Express 6.00.2600.0000

  So you can enable the filter while a virus/worm runs amok and disable it once it 
settles down.


- --
jimoe at sohnen-moe dot com
pgp/gpg public key: http://www.keyserver.net/en/
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