>However my remote Win2K server running Imail is getting a few junk emails >sent directly to it. There was a time when this server was the primary MX >for the domain, so there may be some record of that cached some where.
DNS caching is hours or days max. >Although declude/sniffer is getting most of that junk that is received, is >there anything that can be done to prevent unknown servers from delivering >email directly to this Imail server? spammers scan for port 15 and proxy ports, it's just not legit servers sending to old DNS records. I think some spammers also learn IPs that accept mail and send directly to the IP, no dns query. Change the IP of that machine. but if port 25 is accessible, then it will be hit Len
