outlook

Greets! What is the best way to get access to MS Exchange OWA, while Exch server is located within intranet and PMG is between Internet and Exchange? Afaik, the default PMG https port (443) does not lead to OWA page but to itself.

We've been using PMG for a couple of weeks but today I saw our IP address seems to be on a Microsoft blocklist - ignore this part, how to get unblocked is not the reason why I am posting. Rather, I'd like to see how to get PMG to work with selective smarthosts or possibly some other suggestions...