connectivity with Exchange 2003

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    Our existing network is running on Exchange 2k7 (Domain

    We have another forest running on Exchange 2k3 (Domain IP

    How can we configure both Exchange server so that users in each forest can send/receive mails to each other…

    I have created Accepted domain in Exch.2k7 for domain (type-Internal Relay)
    and one send connector with smart host configured with the address of Domain B(

    On exch.2k3 I have configured smart host address as on default SMTP virtual Server Properties…


    Users in can send mails to….


    Users in are unable to send mails to….

    and getting NDR as:

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

    Subject: Test mail
    Sent: 7/21/2009 1:07 AM

    The following recipient(s) could not be reached:

    [email protected] on 7/21/2009 1:07 AM
    The e-mail account does not exist at the organization this message was sent to. Check the e-mail address, or contact the recipient directly to find out the correct address.

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