In most cases I'd expect that "Explicitly provide SMTP server name and port" is the way to go - in some cases I'd expect an MX record for the domain to be an external address that might not be accessible from inside the LAN. If nothing else is available, it should be possible to set up the Exchange Server (or whatever) to accept SMTP in from the BES. The "server port" seems to refer to the client port number to use rather than 25 for SMTP, which seems odd to me.
My understanding is that you'll need new 8820s to be first turned on with a SIM card with a data plan inside. Once the initial service books have loaded, you should then be able to enterprise activate over WLAN without GPRS enabled. I don't think that I've ever tried it without a SIM at all though, so best to try it before making any promises.
If you want users to enterprise activate over WiFi they'll need to supply the name of the Blackberry router in the third box (which will usually be the BES of course).
|