Re: the Amazing Poly
ellanios82 writes:
> It's a pretty common requirement, as at one time it was the second
> best spam defence (after accepting mail only for named users). Not so
> good now that many ISPs are providing some kind of PTR record.
Some ISPs try to provide a single record for a group of their dynamic
IPs. They bungle so that lookups fail for some IPs. And then some
email providers apply that test to their own customers, *even after they
have authenticated*. Hilarity ensues.
Then there is "probing" the domain in the "From:" line...
--
John Hasler
john@sugarbit.com
Elmwood, WI USA
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