[pmeunier]

I've had problems because the TP2 will not pull the cert from the server and have to install in manually. here are quick instructions on how to obtain the cert. hope this helps:
here are quick instructions on how I obtained the Cert and so forth. Hope it helps.

On your home computer, log into your OWA. Make sure to click the box “this is a private computer”

Once in your email, left click the lock located next to your address bar

And select "view certificates",

Then select “details tab”, "copy to file" button,

The dialogue box opens so click "next",
Select the P7B and the include all certificates check box,
Then give it a file name and destination.

I just save it on the root of my card and install it after every flash