Office 365 - Your mail program is using out of date address information

Discussion in 'Office 365' started by popowich, May 1, 2015.

  1. popowich

    popowich EQ Forum Admin Staff Member

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    Office 365 is going to start using user friendly NDR's compared to the usual server wording in the typical bounce messages from mailer-daemon.

    For example, instead of "User Unknown" you might receive:

    Your mail program is using out of date address information

    The process for fixing the problem is the same:
    • Verify that you typed the address correctly
    • If it came from your address book, delete and recreate the entry for the contact
    • If the problem persists try calling the contact to get their current email address
    It's also possible the contact's mail server is experiencing an issue that caused their address to fail.

    If the contact is in the same company as you, contact your company IT support for help checking the account.
     


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