Hello, I wanted to allow certain clients to relay by using a check_client_access lookup map. It works nice if I use IP addresses. If I use domain names, it stops working for my test environment. My test client doesn't have rDNS set up (I think this is the cause of "connect from unknown[x.x.x.x]", right?).
Do the check_client_access domain checks require rDNS? Is there any way to make Postfix do a normal A record resolve on a domain I give it in that table? For my relay clients, I can trust their DNS A records and I can't think of why I need to check their rDNS (unlike untrusted straingers). TIA
