Postscreen: whitelist domain

[lists]

I have postscreen setup according to the how-to. I use the following 
configuration for the access list. As I understand it, I can only add IP 
addresses or ranges to this list. Is it possible to whitelist the domain 
name in the from address?

postscreen_access_list = permit_mynetworks,
        cidr:/etc/postfix/postscreen_access.cidr