Re: FW: ... the technique of Nolisting -- MIDRANGE-L

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Subject: Re: FW: ... the technique of Nolisting
From: David Gibbs <david@xxxxxxxxxxxx>
Date: Tue, 23 Jan 2007 12:10:24 -0600
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ALopez@xxxxxxxxxx wrote:

Nice trick, but now that it's published you can bet that the spammers are 
already at work.  Two weeks, tops, and the botnets will be updated to try 
both the primary and secondary MXs....


Actually, some spammers specifically target backup MX's ... assuming
that the backup isn't as well protected as the primary.

FWIW: http://david.fallingrock.net/2006/05/31/say-no-to-backup-mxs/

david

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