mark johnson xjphyastroshapescom marc perkel wrote occasionally server something weird might open port 25 one specific ip running something really dumb think ive twice open port 25 problem user solved problem part mx sandwich youll get rid 80 spam lose good email fearful going way higher numbered mx leave bottom interesting want give try whats easiest way give 421 bogus mx log attempt build separate server use existing server run service another port ive got extra ips dont want complicate process mark johnson httpwwwastroshapescominformationtechnologyblog thu 07 aug 2008 102457 0500 ot bogus mx opinions