What does it mean when a persons email to you has a box that says that their "their domain keys are verifie

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What does it mean when a persons email to you has a box that says that their "their domain keys are verifie

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3 hours ago

What does it mean when a persons email to you has a box that says that their "their domain keys are verified

Answer 1

It means that the sending address was not forged like we often see with spam.  The mail was really sent from the postoffice for that domain.  The domain is the part of the address to the right of the @ sign.