[SLUG] /etc/mail/access for a secondary MX

[Nigel Allen <dna@xxxxxxxxxxx>]

Hi

We are acting as secondary MX for a few of our customers, one of who has 
about 20 valid email addresses (including aliases).

I want to change the /etc/mail/access from a simple "RELAY" to something 
that will check for valid addresses for that domain and reject any BS 
ones. We are currently relaying everything and some spammers are firing 
just_about_anything@xxxxxxxxxxxxx at our mail server which I relay to 
the customers mail server which then bounces it back to me and I end up 
with a load of mail in the queue that can never be delivered.

I read recently that this is possible using the "To:" access record but 
so far I either pass everything or nothing.

Can anyone point me in the right direction please?

sendmail 8-14-1 on FC6.

TIA

Nigel.


--
Nigel Allen 	
Managing Director
Electronic Document Registry Systems
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