Microsoft Forefront Server Protection for Exchange Registration Service does not start automatically

Hello,

I am having an issue when I start my TMG 2010 machine:

(*TMG 2010 + Forefront protection for Exchange + Exchange Edge server role, acting like a SMTP relay and Antispam filter)

The service "Microsoft Forefront Server Protection for Exchange Registration Service"does not start, it is set to "Manual".

I tried to find some information about which services should be started and which should not, but I cannot find such information, not even in Technet (my fault probably).

Thanks in advance.

Luis Olías Técnico/Admon Sistemas . Sevilla (España - Spain)