Boy do I now know I have MobileMe for sure.
When I first tried to access it via Apple.com, I didn't remember the password.
I didn't consider it to be the same as my "mail" one. Don't know why. That is just me.
When I got on MobileMe, I had to change it as I had to ask as forgot.
When I changed it, I made it different than my mac.com one.
Well, that messed things up and could no longer address emails in my iPhone.
Went back to mobile me and made it the same as my mac.com email account and all is back to normal.
Nice to find out I have things for $99 that I paid for, don't know about and have never used.