F5 DNS Express

Hi Brothers,

        I have an issue with F5 DNS Express , I configured it as a secondary DNS server and AD as Primary DNS Server , the first issue that when F5 received Notification from AD it not send Zone transfer Request to AD , the second issue that when i configure the F5 listener as preferred DNS on user Machine this Machine can not join Domain even all required Records are available on F5. 

If you have any recommendation please advise.

Br,