SMTP rerouting??

Posted on 2006-05-04
Last Modified: 2012-08-14
I have 2 scenarios that I am trying to achieve on Exchange 2003 server.

1. I need to route all incoming smtp mail addressed fro to another exchnage server. how? will this also redirect outbound mail to this address also?

2. I currently have domain name set on my exchange server. some recipients have a valid email address for the I am being asked to forward mail for to another server (unix) only if a valid smtp address is not located on my exchnage 2003 server? Can this be done? if so how?

many thanks in advance

Question by:rbauckham
    LVL 104

    Expert Comment

    If the Exchange is not going to have any email accounts for the domain, then you can simply get the server to send the email straight back out again using an SMTP Connector.

    Create the connector in the usual way, with JUST the domain that you want to forward out listed in the address space tab. On that same tab, enable the option to allow Exchange to relay the email.
    On the general tab, enter the address of the server that will accept email for that domain. If you are entering an IP address then it needs to be enclosed in [ ] - []

    For the second question, you can get the SMTP Virtual Server to send email for unrecognised addresses to another machine. However for this to work you must not have any reference to the address in the GAL - so no mail enabled contacts etc.

    ESM, Servers, <your server>, Protocols, SMTP. Right click on the SMTP VS and choose Properties. Click on the tab "messages" and enter the host in the last box.


    Author Comment


    for point 2: Currently my Exchange server manages 8 domain names? I only want to forward unresolved messages for 1 doamin name? Is this still possible? do i need to create more than one SMTP virtual server?

    LVL 104

    Expert Comment

    Even if you setup another SMTP virtual server, you cannot force Exchange to use another VS. Exchange will just use the first SMTP VS that it is allowed to, and there is no way to control the use of SMTP VS on a per domain basis.


    Author Comment


    Thnaks but am now confused? Can i do as wished. redirect mail for a specific domain name to another server only if not listed in GAL?

    Many thanks but it looks as if I can do it for all doamins names on server but not a specific one??

    thanks again
    LVL 104

    Accepted Solution

    You can allow messages for users who are not resolved to be delivered to another server - however if the user exists in the GAL as a user or a contact, then it doesn't work.

    Depending on how many users you have, you could setup a dummy domain and mail enabled contacts to get the message to forward across to the other server.

    If you use the unresolved recipients then it is an all or nothing approach - because it is sending unresolved recipients across - ie Exchange can't find them.


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