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From Kai Schaetzl <>
Subject Re: pill image spam learns to walk
Date Mon, 11 Jan 2010 21:31:20 GMT
Ted Mittelstaedt wrote on Mon, 11 Jan 2010 09:42:25 -0800:

> This is the WRONG way to do this

It's the right way. The FP rate is almost zero and it encourages the few 
offending ones to quickly add rDNS, really quick.

> * The reason this is NOT mandated anywhere is because if it was then
> sites running multiple mailing domains on a single server could easily
> overflow the DNS UDP packet space with a list of PTR's for the server -

We are not talking about adding PTR for all domains, just for exactly 
*one*. And that doesn't even need to resolve back and forth.


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