It seems that Hotmail are rejecting emails sent from this message forum. I don't know the reason why but they are being rejected as:
host mx1.hotmail.com [65.55.37.88]: 550 SC-001 Mail rejected by Windows Live Hotmail for policy reasons. Reasons for rejection may be related to content with spam-like characteristics or IP/domain reputation problems. If you are not an email/network admin please contact your E-mail/Internet Service Provider for help.
These messages are being bounced back into my inbox, so I am keen to try & resolve the issue as soon as I can. In the mean time, if you have any alternative email addresses that you can use then that may be preferable for the time being. If not, and if you are using a Hotmail email address, then please try to avoid subscribing to message notifications.
Also, if you register to the forums with a Hotmail address, then you probably won't get the registration email. I will try to keep an eye on new registrations and manually activate them if I can. So if you don't get your registration email, then keep trying to log in and it should eventually work.
Thanks,
Admin