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Re: Experimental phase

2004-02-03 19:46:43
On Tue, Feb 03, 2004 at 08:45:48PM -0600, wayne wrote:
| In <20040203164745(_dot_)GG7601(_at_)dumbo(_dot_)pobox(_dot_)com> Meng Weng 
Wong <mengwong(_at_)dumbo(_dot_)pobox(_dot_)com> writes:
| 
| > It will help if we can construct "pretend" records for the big ISPs ---
| > we'll need to fake up records so we can guess at Yahoo, Earthlink, MSN's
| > ranges.  Anyone know if they have a web page corresponding to this?
| >
| >   http://postmaster.info.aol.com/info/servers.html
| 
| SpamAssassin has a lot of code to detected "forged" from addresses for
| major ISPs.  IIRC, these checks are based mostly off of patterns in
| the rDNS names.  If you can't similar pages, then this might be a good
| place to start looking.

best_guess will probably work pretty well then: a/24 mx/24 ptr.



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