On 01/15, Bill Owens wrote: > On Tue, Jan 14, 2014 at 07:55:44PM -0500, Kevin Darcy wrote: > > Loopback is anti-social; an apparent attempt to make the client > > waste resources connecting to itself. In legal terms, one might call > > this an "attractive nuisance". > > You're quite right; that's why I have MX records for decades-old dead > hostnames pointing to loopback, because the only queries for those > names are from spammers and I'd very much like them to waste their > time. But that's about the only reason I can think of to use it. . .
i point the mx records for old/dead/unused host/domain names at a specific postfix instance that logs attempts to deliver mail to them. the ip address of the sender then gets added to our blacklists. /chl
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