[cameron]

Description: Forefront TMG detected a proxy server loop. There may be a problem in the configuration of the Forefront TMG Web chaining policy. Alternatively, in Enterprise Edition, when CARP is enabled and there are intermittent interruptions of intra-array connectivity, array member A may forward a request to array member B according to the CARP algorithm, and array member B may forward the request to array member A in an endless loop. »

такое бывает когда приходит запрос на опубликованное что-то, а целевой хост не доступен.

Description: Forefront TMG disconnected a non-TCP connection from 192.168.110.41 because the connection limit for this IP address was exceeded. Larger custom connection limits should be configured for the IP addresses of chained proxy servers and back-to-back Forefront TMG computers with a NAT relationship. »

а это может быть торрент или DNS сервер.
соотно если это легитимный траффик то нужно увеличить кол-во сессий в оснастке TMG.