BH>What I don't understand, is how you enforce the fact that the PTR must BH>be in the same subdomain as the returned lookup.=3D20
LEN> A and PTR must match, there is no other requirement. The=20 LEN> PTR hostname can be anything. So, what I don't understand is how *you* enforce your "I don't accept mail from @hotmail.com that comes from MTAs in AOL.COM" rule. Are you doing this with a custom script? Or some other postfix facility? Or did I misunderstand what you said you are doing? - Byron
