Can anyone help - I'm already grey, now losing it as well.

Setup Forefront TMG as a one nic proxy server (to replace a really old ISA server). We rely on nottscc to provide firewall and most filtering but want to use this as extra url control and caching.

All set up fine to the upstream proxy and all works well apart from the server complains about not being able to connect to the Microsoft Reputation Services servers. IE connects to MRS fine, DNS resolves the correct addresses, SSL connections work fine.

The weird thing is on one day it started working and correctly rated URL's, the next day it stopped again. (no changes made at my end)

The error message shows up in alerts and from URL category query - 'microsoft firewall service failed to connect to the microsoft reputation service server'

Could the problem be caused by the notts council firewall? Any ideas?