check PTR with MS

Octavio octaviomaiden at
Tue Sep 9 16:52:30 IST 2008

I wonder to know if is possible check:

if the IP has a name
if the name exist

similar like reject_unknown_client_hostname in postfix but using score

the problem is that if I use it in postfix there are some domains that I want to receive emails but they are being rejected


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