#550 4.4.7 queue.expired message expired ## exchange 2007

Posted on 2012-09-19
Last Modified: 2012-10-06
I am getting the below error when I send email to any yahoo account from my exchange 2007 server. My Domain and exchange running in one server.

#550 4.4.7 queue.expired message expired ##
Question by:jobby1
    LVL 57

    Expert Comment

    by:Pete Long
    Can you resolve the DNS name of the organisation that is in that queue?
    LVL 57

    Expert Comment

    by:Pete Long
    And make sure you server identifies itself correctly
    LVL 57

    Expert Comment

    by:Pete Long
    And take a look here to make sure your DNS is configured correctly
    LVL 17

    Accepted Solution

    Does this only happen to Yahoo? Does any other external recipient receive their email?
    Can you validate your MX information is correct?

    Verify your setup is correct using this tool.

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