PTR issues

[The Doctor]

Got a customer who is trying to set up a mail server;
however, an error saying no PTR record is turning up.

Any explanation?
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Member - Liberal International	
This is doctor at nl2k.ab.ca	Ici doctor at nl2k.ab.ca
God Queen and country! Beware Anti-Christ rising!
Beware Linux the Microsoft of Unixes!!

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