Relay certain domains in the sender part by defined ip addresses

[Dimitrios Karapiperis]

Hi there!

I am using Postfix 2.6 along with GNU Mailman for mailing lists.
My question is
if there is any way to relay e-mails with sender (MAIL FROM) of defined 
domain names (eg. x...@domain.tld) originated by a predefined set of ip 
addresses
and reject all the others that originate from other ip addresses.

thanks in advance
Dimitrios