Currently on my MX servers I use a custom rhsbl to reject domains blacklisted by us. The DNS lookups are handled using a local rbldnsd server.
I am trying to create a list of spammer email ids so that I can reject spammers of neutral domains. But this can be a potentially huge list. I am not sure if this is a good idea. Will it be possible to reject email ids via reject_rhsbl_sender. Also how do I know the workable limits of maximum number of entries my rbldnsd can handle. Thanks Ram
