Re: Wildcard DNS entry2004-09-15 06:41:03On Tue, 14 Sep 2004 23:16:16 -0400, Meng Weng Wong wrote spammers will start to forge www.example.com receivers will observe that www.example.com has no mx record receivers will try to connect to port 25 receivers will observe that www.example.com is not an mta this knowledge can be recorded in some sort of rfc-ignorant type system or reputation ssytem or whatever. That's basically callback verification, isn't it, other than the central database?
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