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Email flow from office 365 to on-premise Exchange 2003 and Hybrid 2010 RRS feed

  • Question

  • Hi All,

    I have an issue with mail flow between Cloud, EX2003 and EX2010 mailbox.

    EX2010 mailbox -> Office365 mailbox: OK

    Office365 mailbox -> EX2003 mailbox: failed and NO NDR

    I ran Delivery Report from Admin portal

    it says:

    Submitted:

    5/4/2013 2:19 PM

    The message was submitted.

    Delivered

    5/4/2013 2:19 PM

    The message was successfully delivered.

    But I couldn't find any sign of the email either in EX2003 nor EX2010.

    EX2003 mailbox -> Office365 mailbox: failed and NO NDR but this

    Your message did not reach some or all of the intended recipients.

     Subject: test sending 2003
    Sent: 4/30/2013 10:12 PM

    The following recipient(s) could not be reached:

      Office 365 on 4/30/2013 10:12 PM
      A configuration error in the e-mail system caused the message to bounce between two servers or to be forwarded between two recipients.  Contact your administrator.
      <contoso.com #5.4.6>

    EX2010 mailbox -> Office365 mailbox: OK

    Office365 mailbox -> EX2010 mailbox: failed with an NDR

    Where should I start troubleshooting?

    Thanks in advance

    Regards

    Saturday, May 4, 2013 11:07 AM

Answers