Hi, I have a postfix-3.0.1 system on fedora22 that relays its mail to an internal postfix system where the users receive their mail and send as users of the domain. I have a transport map configured on the external mail system that forwards mail to the internal server for a handful of domains.
On the internal system I have a check_recipient_access list configured that rejects mail from non-existent users. I'd like to move that access list to the external system so bounces are sent directly to the sender instead of back through to the external server. How can I configure the external system to support the check_recipient_access while also then forwarding on valid users to the internal system? Thanks, Alex
