I'd wondered about that.
I tried emailing my friend's hotmail yesterday and it bounced back.
( Blue Star was working part time at the 5 and Dime, Tue 19 May 2009, 16:08, archived)

But I managed to email two other hotmail addresses fine.
Hmmmmm...
( Blue Star was working part time at the 5 and Dime, Tue 19 May 2009, 16:09, archived)

How strange
It's blocking the hospital's IP address completely, so no hotmail accounts can receive the emails.
( Imhotep is Invisible - Consider this a divorce, Tue 19 May 2009, 16:15, archived)

I only got one bounce back to me.
That was a .co.uk one, the others were .com
( Blue Star was working part time at the 5 and Dime, Tue 19 May 2009, 16:27, archived)