I have a WP7 device and since I first had it, I have instantly been able to sync with 2x different Exchange servers, each running from a completely seperate domain (i.e. different businesses entirely).
Now, only one works, as the other constantly gives me the following error:
Update the date and time on your phone and try connecting again.
Last tried 3 seconds ago
Error code: 80072F05
I have followed all advice in terms of the date and time on my WP7, but it's not that, as the other Exchange account works fantastically well, leading me to believe that it's the server on the failing Exchange account.
The server appears fine - I can access webmail externally, or via Outlook on a PC internally as I always have done. The date and time on that server doesn't appear to be very much 'out' either.
Any thoughts and ideas?