SMTP Relay Tester

SMTP Relay Tester will scan the SMTP server in question and will tell you what problems you are facing . SMTP Relay Tester will connect to your SMTP server (or Any SMTP Server - your clients..) and try to manipulate the sender address and the receiver address to relay a message, in that way YOU will be able to avoid spammers using your server and eliminate the possibility that your server will be black listed (tagged as spam server)