Hey Everyone we have a new client that asked us to looking into setting up reverse DNS lookup because they run a spoofing test. To my knowledge this is not possible am i correct?
The client already has ATP set up with microsoft standard baseline policy
thanks for the help
YOU SHOULD NOT RECEIVE THIS EMAIL!
This email system failed to validate the source domain (reverse DNS lookup) This security issue is used often to compromise users from lookalike domains, your inbound servers do not check if the domain is valid before accepting the email. This security issue is used often to compromise users, steal data, and manipulate internal affairs.
To correct; Configure your inbound email servers reverse DNS correctly and try again. Go to emailSpoofTest.com for details, reference Email 5