# This file must be "compiled" with "postmap" # Using a domain name #example.tld 554 Spam not tolerated here # Maybe example2.tld is on a DNSbl, but we want to let their # email in anyway. #example2.tld OK # Checking by IP address # 10.0.0.0/8 #10 554 Go away! # 172.16/16 #172.16 554 Bugger off! # 192.168.4/24 is bad, but 192.168.4.128 is okay #192.168.4.128 OK #192.168.4 554 Take a hike!