Thanks for all the advice, everyone.
Ed, I picked up the suggestion of trying to connect with a known IP address from the West Wind site, and thought I might use the GetIPFromDomain() function. It gave the correct answer (from cached data?) after I went off line in the middle of an email session. It may work for testing when I start sending, though. I'll check the earlier thread for more info.
> Rick's recommendation of trying to connect to a known IP address seems to be the best method of determining whether or not you can see the world, but it's not an instantaneous response. The thread in question was back in late wintrer/early spring of this year, if you're ambitious and want to find the gory details.