At this point we are now one year away from the end of Threat Management Gateway (TMG) 2010 support. Many of Exchange administrators and architects will need to look at alternative solutions for publishing and securing Exchange, though this should have previously instigated.
TMG 2010 will exit out of extended support on the 14th of April 2020. Please plan accordingly.
Forefront Threat Management Gateway Lifecycle
The product lifecycle page can be consulted for all of the relevant details for TMG.
Also please note that UAG is also existing out of support on the 14th of April 2010.
Forefront Unified Access Gateway Lifecycle
The product lifecycle page can be consulted for all of the relevant details for UAG.