ok i am currently using exchange 2010 and exchange 2003. Users have issues when sending emails to certain users.
The error is
#550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##
What do i have to do to solve this issue? Add x500 address. can i do this in bulk if so how?
Also how can i clear outlook address book and set global address book as the default. Also need to clear Outlook 2007/2010/2013 Auto-Complete Cache