Exchange 2007 running on SBS2008
Messages get delivered to the server
Users see the messages on their mobile devices and in OWA
Messages don't get delivered right away, severe delay (1 hour, 2 hours, ?) but eventually do get delivered.
Happening with more than one user, but not all at the same time.
User mentioned that at the bottom of her Outlook 2010 when it says updating, sometimes it lasts for 30 minutes, but the server is only 20 ft. down the hall from her.
She is hard lined, not wireless.
Both users are using laptops and do access the server outside the building using the Outlook client over a VPN.
Obviously, something is hanging up the Exchange/Outlook sync but what?
Where should I be looking?
How can I diagnose the issue?