Well, I found out what a248.e.akamai.net does. Go to Spyblockerantispyware software forums. This is Microsoft's new updater. You have to have it to update your software. Still does not explain why it is on my mailbox, but it tracks what is being sent to you and what you send out. I guess this is given to Microsoft to use as they please. I am to disgusted to talk about it anymore. Just go to the forum and read about it. They also slow down your computer.