I tried this with MS Plus! Activation
SME Server (Mitel) 6.0 in Private Server and Gateway mode - P200, 32M
Client: WinXP SP1, PIV 2.4G 512M
Installed MS Plus!, OK, got
Activate Microsoft Plus! Digital Media Edition online
Status:initializing.....
Status:connecting .... (progress bar stalled app 30%)
Got: Cannot complete the Plus! activation dialog box
"Microsoft Plus! Product Activation was not able to activate (MPDME) for the following reason:
(MPDME) cannot be activated at this time because the MS Plus! Activation Wizard is unable to transmit information to the MS product activation service. Verify that your computer is connected to the internet, and try again."
Per MS Kbase, checked
http://www.microsoft.com:80 and :443 - opened OK
Checked time on client and SME, try again - Same error
Using port forwarding panel:
forwarded TCP port 443 to client IP, try again, same error
forwarded TCP port 80 to client IP, try again, same error
removed forwards.