I am wondering how to white-list domains so that they are delivered without grey-listed or rejected or marked as spam. I tried to create a file /etc/postgrey/whitelist_clients.local and entered the domain names line-by-line. However, it doesn’t seem to work and I am receiving the emails as spam.
I also saw another suggestion to create /etc/postfix/postgrey_whitelist_clients file but haven’t tried this one yet.
So, I wanted to open a new topic to ask. What is the proper way to white-list a domain with Mail-in-a-box system?