This drove me nutz for days, Using various flavors of BIND 9, I started seeing something in the logs that I found distressing. Looked like this,
Feb 15 07:04:25 ns1 named[2051]: socket.c:1100: unexpected error: Feb 15 07:04:25 ns1 named[2051]: internal_send: 244.254.254.254#53: Invalid argument This went on for a while. Couldn't sort it out. Turns out that the fellow running relays.monkeys.com one of the enabled by default RBLs has shut down his service due to massive spamming attacks. He set his IN A record to 244.254.254.254 for relays.monkeys.com which has caused some real issues for some folks. The fix is to comment out or remove the line pertaining to relays.monkeys.com in /etc/MailScanner/spam.lists.conf and restart the openprotect service. Hope this helps --chipper
