Message Authentication lets you specify how VPOP3 can indicate and verify that messages are from who they say they are from.

➢DKIM/Domain Keys Tab - these are mechanisms which sign sent messages to indicate that they have not been modified since being sent

➢Authentication-Results Tab - this is a standard header which mail software (including VPOP3) adds to received messages to indicate the result of any authentication checks which have been performed.

➢BATV Tab - (Bounce Address Tag Validation) is a way to confirm that bounce messages are really due to messages you sent, rather than from someone forging your email address as the sender.