From: Jan P. Kessler (no email)
Date: Thu Mar 01 2007 - 04:01:27 EST
> I've bought the O'Reilly book about Postfix and I see that I can create
> my own restriction classes.
> My question is the following: can I use this to choose which computer
> are allowed to use my relay server to send mail to Internet and which
> are not ?
You can BUT you don't need that nuclear rocket to kill some sparrows ;)
Just set your mynetworks correctly:
mynetworks = 192.168.1.0/24, !192.168.1.2, !192.168.1.3
smtpd_recipient_restrictions = permit_mynetworks
reject_unauth_destination
This allows relaying to 192.168.1/24 but not for .2 and .3. If the list
grows you can put that information into files (i'd suggest "cidr" type
dbs).
note: you might want to add some other fancy restrictions.
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