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I have a TMG2010 instance with 3 internal networks and 2 external networks (all on separate network cards).

I have published Outlook Web Access via TMG using one of the external addresses. I want to be able to access this site from the internal networks as well as the external however I cannot make this happen. I do not want to have to use a DNS override to point at an internal address as this seems to confuse smart phones when they switch between the internal Wi-Fi and external/3G networks.

My publishing rule accepts requests from "anywhere"; my SSL listener listens on the external addresses only. I have a global "catch all" rule that allows "all outbound protocols" from internal to external.

Externally, OWA works without any problem. If however I try to access from one of the internal networks I cannot reach the server.

OWA is published on the same address as is used for all outbound traffic to the Internet.

Can anybody offer any advice?

Martin Robins
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  • 1. Is the internal DNS suffix of the server the same as the outside? 2. When you resolve the external FQDN of your server from inside, do you get the proper result? – EliadTech Oct 07 '14 at 13:50
  • The internal suffix differs from the external; internally we are .local and externally we are .co.uk - if we ping the external name we do resolve to the correct external address, however that address does not respond to a ping. – Martin Robins Oct 07 '14 at 14:51

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