On Sun, Sep 1, 2013 at 5:30 PM, Lorenzo Colitti <[email protected]> wrote: > What's wrong with wildcard PTRs? > > *.e.f.a.c.8.b.d.0.1.0.0.2 IN PTR customer-cafe.isp.net.
And, customer-café.isp.net 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 <[email protected]> resume: http://jfesler.com "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."
