To ensure that mail from a particular network is not blocked you add it to the White list. However, now you are receiving spam messages from that network. Which is the most likely cause?
A.
The Blacklist isbeing skipped by the White list
B.
The Trusted Mail Flow Policyhas Spam detection switched off
C.
The Anti-Spam engine license has since expired
D.
The default Mail Flow Policy has sender verification switched off