Second email domain in exchange server 2003 std is not working..

Posted on 2011-04-20
Last Modified: 2012-05-11
We have one exchange server 2003 and the default domain is
it is working fine. Then we acquired another domain which is and I added the second smtp address as in recipient policies and it updated the address in the users.

But we cannot login using the new email address in OWA or even using pop3.
I have made this email address primary.
Both the MX Records are already updated.
Question by:mirfan_cert
    LVL 117

    Expert Comment

    by:Andrew Hancock (VMware vExpert / EE MVE)
    Firstly, when you login into OWA currently does work for OWA and POP3?

    If it does are you using UPNs for logging in? and have you checked the default UPN for the user which is having difficulty.

    LVL 17

    Accepted Solution

    You don't use email address for logging on, you use the UPN.  
    You have to add the new UPN suffix to the forest:

    Users currently log on with as it's the only (and default) UPN suffix for the forest.

    Once the new suffix is available, you have to change the users who will log on with the new UPN suffix, like:

    Author Comment

    After adding the suffix to the forest I am able to login into OWA but still unable to send emails outside.
    Can receive emails but can't send.
    LVL 17

    Expert Comment

    by:Tony Massa
    Do you get a NDR, or does OWA return an error?

    Author Comment

    It is working now There was some mistake in the configuration of the firewall which I corrected.

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