My problem :

I have only one instance in this server.
If I using 1054 or 1056 port, Rma has started.
But In my Network, only port 1055 is open.
I have checked this port on server with Netstat and Tcpview.
The 1055 is not use by another process.
My antivirus : Norton - I don't Scan mail. Only files.
It's a Web Server (Win 2003 server) - No sql server - Just IIS.
I have a same second server, and RMA has started
Thanks for help.