[MM3-users] Re: Postfix Hooks and Fetchmail

I am not understanding the documentation. I already have this in my main.cf:

transport_maps = hash:/opt/mailman/var/data/postfix_lmtp local_recipient_maps = hash:/opt/mailman/var/data/postfix_lmtp relay_domains = hash:/opt/mailman/var/data/postfix_domains

What is not explained is where/how to add the alias_domain parameter. Does it go in /opt/mailman/var/data/postfix_domains? Is it added as a new domain or as an append to the existing domain line?