Well, in much simpler news, I am happy to announce that today I received NO SPAM!! I followed Mr. David's instructions and was rewarded with an empty spam box.
Thank you sooo much. It was driving me nuts having to look at all of that stuff and not knowing how to make it go away. I am immensely grateful.
Now y'all can carry on about more arcane topics like identities, subdomains, and aliases. I'm just spam-free old lady with much simpler tastes.