Hello, I have Exchange 2003 running on a 2003 server. It is also my webserver and I have besides my website also a forum running. Before 2 weeks ago this forum could use my smtp server to send messages. But now I get this error: Could not connect to smtp host : 10053 : An established connection was aborted by the software in your host machine. DEBUG MODE SQL Error : Error Line : 111 File : smtp.php I checked the acces control and the relaysettings and set everything open, but still I get this error. Does anyone have some tips for me? Thnx. With kind regards, Mark Meelhuysen