I recently updated from OS X Snow Leopard to Lion, all seemed good.
Then I noticed that the email look up function in Mail hadn't refreshed since the update. Mail was looking up old email addresses and resolving distribution lists to an out of date list.
I deleted the mail data in the library, and reset it - all came back fine, but the problem with resolving email addresses remains.
So next I deleted the address book files from the library and the exchange sbs2008 contacts are no longer syncing - the list is now blank.
I've tried deleting and recreating the account several times but each time it still comes back blank, it's no longer syncing - Now I'm thinking I've found the problem!
Can any of you fine experts help me to get it to sync, and keep it up to date?