Domain used for spam - NDR responses

[Rob Sterenborg]

>> What MTA?
>> 
>> I know that Postfix can do recipient address verification
>> (just like sender address verification that some despise), if
>> the final receiving MTA rejects non-existing recipients.
>> Perhaps you can use this, in which case you don't need relay
>> recipient maps. Of course you'll have the penalty of some extra
>> network traffic between the relay and the final MTA's.
>> 
>> 
>> Grts,
>> Rob
> 
> MTA is Postfix.
> Interesting.. So if I understand correctly, postfix will query the
> backend server to see if a user exists before it accepts the inbound
> mail? I will look into that now.

http://www.postfix.org/ADDRESS_VERIFICATION_README.html#recipient

> Thanks Rob.

You're welcome.


Grts,
Rob