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How to setup mail relay/smtp virtual server in DMZ

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  • How to setup mail relay/smtp virtual server in DMZ

    I have in DMZ Windows server 2003 with IIS plus SMTP to be use as a mail relay for inbound and outbound mails. I have a public IP and I have open port 25 in the DMZ and not in the internal mail server. Could please someone help me on how to configure the default smtp virtual server in the DMZ and default smtp virtual server and smtp connector in the exchange 2003 mail server? I just don't want for the exchange server 2003 to be an open relay.

  • #2
    Re: How to setup mail relay/smtp virtual server in DMZ

    My gateway guide should help: http://exchange.sembee.info/network/smtp-gateway.asp

    Simon.
    Last edited by Sembee; 16th August 2011, 09:52. Reason: URL Correction
    --
    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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    • #3
      Re: How to setup mail relay/smtp virtual server in DMZ

      Great, thanks for your help. Also regarding the smtp virtual server in exchange server, I have seen that there's an option of forward unresolved recipients to another host. If I will use the smtp connector then going to mail relay server, are there any option of forwarding unresolved recipients to another host? Do I still need to setup a smtp connector?

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      • #4
        Re: How to setup mail relay/smtp virtual server in DMZ

        The two settings are separate.
        If you have forward unresolved recipients enabled, then it will use whatever traffic mechanism you have configured to send those messages. If you have configured an SMTP connector/s then it will use that.

        I am not a fan of the forward unresolved recipients method, I prefer to control the email addresses that work.

        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.

        Comment

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