You cannot bypass the proxy. Either the administrator of the proxy machine has to open up the port for you, or, you have to tunnel it through some port which the proxy keeps open. Typically, proxies keep port 80 for HTTP open. You could write a webservice that runs on a machine that has access to the port you want and then simply have your client call the webservice instead. Regards Senthil [MVP - Visual C#] _____________________________ My Blog | My Articles | My Flickr | WinMacro

Thanx, but i still can not establish a connection becuase i cannot use that value or where i can use it in my connection //establish TCP connection try { CallTrace(" Connect at port {0}", port); serverTcpConnection = new TcpClient(popServer, port); } catch (Exception ex) { throw new Pop3Exception("Connection to server "+ popServer + ", port " + port + " failed.\nRuntime Error: "+ex.ToString()); }