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That way, fraudulent bounceback messages are easily spotted by the IronPort appliance, which looks for the identifier in legitimate
bounceback messages.
If a fraudulent bounceback is flagged, the IronPort appliances offer several options to the e-mail manager for either dropping
the fake bounceback or quarantining it.
Edwards said the bounceback verification technology is based on a proposed IETF standard called Bounce Address Tag Validation,
co-created by Dave Crocker, principle at the firm Brandenburg InternetWorking Consulting.
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