I need a solution
Hi All,
I'm using Symantec Messaging gateway appliance v10.5.4
Just recently I've received multiple spam email to some of my internal AD user & Exchange Shared mailboxes.
The sender was from Network.Scanner@mydomain.com but the Originated IP and the email subject is always randomly changed.
How can I prevent the SPAM from external sender spoofing as internal sender to my domain safely ?