I suppose a spammer could, say, resolve exchange.domain.com and then send mail to user@<IPaddress>

I dunno much about spammers' antics.  Is this sort of thing common?

SM wrote:
At 21:50 21-08-2005, Roger Rustad wrote:

If I have, say, exchange.domain.com, I'm assuming that's cool, as any @domain.com mail will go to the mx record, and not the A record.


Yes, mail to @domain won't go to exchange.domain as it is not listed as a MX.

Regards,
-sm
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