On Thu, 2 Dec 2004, Carlos E. R. wrote:
The Thursday 2004-12-02 at 09:37 +0100, Togan Muftuoglu wrote:
Third alternative is not to use backup MX at all, since clever MTA should have a resending que for the mail somewhere between 4 to 5 days. So mail should not be getting lost. Since the spammers almots always use the backup MX to deliver their junk no backup MX also means less junk :-)
Why is that, what's the difference? The email, bona-fide, should reach destination regardless of using the main or the backup MX, shouldn't it?
I don't see why spammers prefer the backup MX... :-?
Usually the backup MX is not as secured as the primary MX. Spammers have
found that 80 % of what will not go through a primary MX will go through a
secondary MX. This was given at I believe the FCC summit in November.
--
Boyd Gerber