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Forwarding to 3rd party email from Exchange Mailbox

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  • Forwarding to 3rd party email from Exchange Mailbox

    Hello,

    We are seeing an issue with one of our client environments (Exchange 2010) where they want to forward mail to a personal mailbox such as gmail.com - When the mail hits exchange and it forwards to gmail it will get an NDR about a DMARC issue. We see it with environments that have Dmarc settings set to reject such as facebook, yahoo etc.

    It would seem in the forwarding process exchange changes the header and dmarc fails. I'm interested if anyone has been able to address this of if there is a fix for this. So right now it's is unreliable some work, some don;t but Murphy's law dictates that the important mail will be on one that does not work.

    Error below
    -- 5.7.1 Unauthenticated email from example.com is not accepted due to
    domain's DMARC policy. Please contact the administrator of
    example.com domain if this was a legitimate mail. Please visit
    https://support.google.com/mail/answer/2451690 to learn about the
    DMARC initiative. r185si7696144wma.136 - gsmtp

    Thanks

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