"Microsoft Exchange Offline Address Book not downloading Offline Address Book files. A server (URL) could not be located. 0X8004010F"

This error is related to a missing DNS record for your email domain to fully utilize the Exchange Auto-Discover feature. Please request for your DNS host to modify your CName to the following settings:

AutoDiscover Settings

*Please note: If you have multiple domain aliases, each of those domains will need to have the above record added to their DNS Zone.