Begin 2012-07-11 03:08:00
End 2012-07-11 14:55:00
Affected Science mail users trying to send mail to MS-domains:,, …

This morning, users reported that mail from to hotmail users was being bounced by hotmail. We have tried to let the hotmail administrators change this fast, but when this took too long, we changed the IP-number of our smtp-server.