Since around 11:30am GMT this morning hotmail has not been accepting any inbound email for hotmail.com, .co.uk live or msn domains.
When our SMTP servers try to make a connection to any of hotmail MX servers the connection is either accepted and then closed immediately or outright rejected.
There is nothing on the hotmail/Microsoft postmaster site to acknowledge the problem at this stage however it has been reported on twitter that it may be down for as long as 8 hours which allegedly came from a Microsoft technical support representative.
If you have sent an email to someone on Hotmail, our servers will continue to retry to deliver the message until the Hotmail servers come back on-line. You don’t need to re-send.

