Hello all, I am a rookie to postfix, I apologize in advance, and I have been tasked with not allowing SPAM to be forwarded. I basically receive messages from an edge mail server that adds a header to a messages stating whether it has been flagged for spam or not and another that gives the message a numerical spam rating spam rating. I am also not running spam assassin or clamav on my system because these edge servers already mitigate those issues. My job is to ensure that if a person has a forwarder set to another domain to only deliver the SPAM locally and not forward it. This is on a Zimbra 8.6.0 install. If someone could point me in the right direction I would greatly appreciate it. I have been looking on line and what I have been finding is mostly about rejecting SPAM. I have also been looking at postfix after-queue content filtering on the postfix docs. But I need some good examples and I am not really quite sure what commands I would use to deliver only locally. Any guidance would be appreciated.
Regards, Pablo
