Killfile/Delete/Otherwise-Never-See

[Slackrat]

I never want to see a post with headers like these

Currently I firewall block them, but there is still the first occurrence
which shows up in my "XXX-Potential-Spam"  group before I can add them
to my firewall chains.

How would I accomplish this please?

 I had thought that since there was no "To:" line, they would be bounced
 but apparently not.

[QUOTE HEADERS]
X-From-Line: duvympxikrrry@ftp1.biz  Thu Jan 19 04:54:27 2012
X-Gnus-Mail-Source: file:/var/spool/mail/<username>
Message-ID: <851uqw2eed.fsf@totally-fudged-out-message-id>
Return-Path: <duvympxikrrry@ftp1.biz>
Received: from 119.123.148.57 ([119.123.148.57])
        by azurservers.com (8.14.4/8.14.4) with SMTP id q0J9sP65027094
        for <username@azurservers.com>; Thu, 19 Jan 2012 04:54:26 -0500
Date: Thu, 19 Jan 2012 04:54:25 -0500
From: duvympxikrrry@ftp1.biz
Received: from 184.208.172.69 by ; Thu, 19 Jan 2012 07:48:47 -0200
Original-Message-ID: <C[20
Lines: 0
Xref: azurservers.com xxx.potential-spam:2106
[/QUOTE HEADERS]

-- 
Slackrat
Flying the Flag of the English
http://usera.imagecave.com/daveycrockett/englishdragon.jpg