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[Exchange 2003] Route all e-mail to external smtp

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  • [Exchange 2003] Route all e-mail to external smtp

    I am looking for a solution for the next situation.

    I have a Exchange server wich uses a POP3-connector for receiving e-mail.
    The domain is company.nl. I have a list of multiple users, for an example:[COLOR=black]The problem i encouter is that the customer has a user wich doesn't have an account in the exchange environment but does have a POP3 mailbox at the ISP as [email protected]

    You see it coming, when i send an e-mail of one of those internal users, exchange bounces the mail, because he can't find that user.

    What i an looking for is an option to send every mail to the external SMTP of the ISP, even when it could be routed inside.

    I know this option excist on other mail delivery software, but i can't find it in Exchange.

    Anyone knows a good solution?
    Last edited by Iznogoud; 18th February 2009, 09:42.

  • #2
    Re: [Exchange 2003] Route all e-mail to external smtp

    It is an SMTP Connector, not POP3; try putting [email protected] as an address space in that same. The connector must have the ISP server as smart host.

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    • #3
      Re: [Exchange 2003] Route all e-mail to external smtp

      Originally posted by rjbarlow View Post
      It is an SMTP Connector, not POP3; try putting [email protected] as an address space in that same. The connector must have the ISP server as smart host.
      To be honest i don't know what you mean exactly.
      I am using the POP3 connector for receiving mail. When i send an e-mail internally to [email protected] the exchange server tries to relay it internally and this shouldn't. Thats why i want that every mail send to people internally or externally always been send to the ISP Smtp server..

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      • #4
        Re: [Exchange 2003] Route all e-mail to external smtp

        Originally posted by rjbarlow View Post
        It is an SMTP Connector, not POP3; try putting [email protected] as an address space in that same. The connector must have the ISP server as smart host.
        rjbarlow mentioend the Smarthost. That will be a host that your ISP will provide and will be their SMTP server that you refer to. It will hold emails on your behalf until your Exchange server or other mail client sends a HELO/EHLO command to retrieve them. I am unsure why you want internal emails to go via the ISP's SMTP server. Internal email will be handled by Exchange.

        For emails external to you to go via the ISP, you will need to setup a SMTP connector in Exchange with appropriate rules.

        http://www.amset.info/exchange/smtp-connector.asp

        Are you receiving emails via the ISP for all emails directly (sounds like you aren't) or are you using POP3 to connect to the Exchange server for all internal clients? I take it User14 is a home worker and can't connect to Exchange?
        Last edited by Virtual; 18th February 2009, 12:05.

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        • #5
          Re: [Exchange 2003] Route all e-mail to external smtp

          I am not using bSMTP, Batch SMTP or what ever you call it. I pull the mail from the ISP mailboxes with the POP3 connector.

          Like i said before i have multiple users and they can send and receive e-mail perfectly.

          But there is one person who only works externally, doesn't have a user account / mailbox on the Server. This user DOES have a POP-box at the ISP.

          When an excisting user (i.e. [email protected]) sends an e-mail to [email protected] the exchange server flags it as internal, because the domain name is the same, but the exchange server can't find the user and therefor sends a error back.

          I am looking for a solution where i can send mail to [email protected] and exchange keeps his hands of this e-mail, so this mail will be send to the ISP SMTP server.

          There for i would like to change something so that every e-mail will always be sent to the ISP SMTP server.

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          • #6
            Re: [Exchange 2003] Route all e-mail to external smtp

            If you are sending through Exchange then it will be the link in my post below you need to follow. Sembee, who also posts on this forum, gives a very good step-by-step guide.

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            • #7
              Re: [Exchange 2003] Route all e-mail to external smtp

              What you are trying to do is share the SMTP address space.
              http://support.microsoft.com/kb/321721

              Simon.
              --
              Simon Butler
              Exchange MVP

              Blog: http://blog.sembee.co.uk/
              More Exchange Content: http://exchange.sembee.info/
              Exchange Resources List: http://exbpa.com/
              In the UK? Hire me: http://www.sembee.co.uk/

              Sembee is a registered trademark, used here with permission.

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              • #8
                Re: [Exchange 2003] Route all e-mail to external smtp

                I have found a nice option.

                If you go to the Exchange System Manager -> Servers -> <Servername> -> Protocols -> SMTP -> properties of the [b]Default SMTP Virtual Server.

                On the tab Messages at the bottom is a field Forward all mail with unresolved recipients to host:

                I have entered the SMTP server of the ISP and the mail to [email protected] is now delivered in the POP3 box at the SMTP.

                Is this a good solution or can i expect alot of problems?

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