Hi Gary,

> 
> >> That's actually a good idea :) I'll consider that!  But all of our MX
> >> records are the same priority anyway, but adding a fake secondary might
> >> actually be pretty neat (since spammers mght skip "relay1" and "relay2"
> >> and go right for the priority 20 server which wont exist.
> 
> As a test, I set my system up like this:
> 
> 10 MX server1.example.com
> 10 MX server2.example.com
> 20 MX dummy.example.com
> 
> I admit my samples a very limited, but:
> My traffic level is back to what it was before, so I would say this
> technique has little effect when used with round robin MX records.

Something somebody suggested to me was to create a low priority MX that
did exist but had a lookup of 127.0.0.1. I'd have thought this might
have more luck than creating a completely bogus MX. Have you tried this?

BTW - check RFC 3330, RFC 1035 before implementing these measures ;)

Rgds

Pete




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