PTR records for IPv6

Jason Fesler jfesler at
Mon Sep 2 03:05:19 CEST 2013

On Sun, Sep 1, 2013 at 5:30 PM, Lorenzo Colitti <lorenzo at> wrote:
> What's wrong with wildcard PTRs?
> *.e.f.a.c.8.b.d. IN PTR

And, customer-café has AAAA records to what exactly?

It isn't just reverse DNS.  It is reverse + matching forward DNS.
Mismatches in the IPv4 world are greatly penalized both at SMTP time
and by SpamAssassin.

 Jason Fesler, email/jabber <jfesler at> resume:
 "Give a man fire, and he'll be warm for a day;
 set a man on fire, and he'll be warm for the rest of his life."

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