Setting incoming SMTP port on SBS / Exchange
Having set up my SBS server some time ago, I couldn’t remember where I had set the incoming port number (falsely called 65535 here.) I find the button that pops open the dialog box for this quite forgettable, so I’ll document this here hoping to help someone — me included — in the future.
Running TCPView from SysInternals shows that inetinfo.exe is listening on port 65535.
This was set in Exchange System Manager, drilling down seven levels to the SMTP-Default, right-clicking Properties, Advanced and editing the incoming port number. By default, this is port 25 for SMTP.