Sites that points their A Record to localhost

[cool hand luke]

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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