Publishing Exchange Server 2010 with Forefront Unified Access Gateway 2010 and Forefront Threat Management Gateway 2010

A nice white paper by Microsoft describes how to publish Exchange 2010 servers using either TMG or UAG.This white paper provides information about publishing Microsoft Exchange Server 2010 using Forefront Unified Access Gateway 2010 and Forefront Threat Management Gateway 2010, including how to choose between them for different scenarios, and provides specific steps you can take to configure Forefront TMG and Forefront UAG to publish Exchange 2010.

You can download this useful white paper from here.