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exchange server 2007 can't receive external mail

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  • exchange server 2007 can't receive external mail

    Hi, I have set up an Exchange Server 2007 named on Windows sever 2008 and can send and receive internal mail successfully. And I can send out external mail but cannot receive external mail. The following error logs provided by ISP show an email sent from [email protected] to
    [email protected] :

    Received: from (localhost [])
    by localhost (Postfix) with SMTP id 13A3A8369
    for <[email protected]>; Tue, 5 Jun 2012 13:21:22 +0800 (HKT)
    Received: from ( [])
    by (Postfix) with ESMTP id BA5428366
    for <[email protected]>; Tue, 5 Jun 2012 13:21:21 +0800 (HKT)
    Received: from [] by (mshttpd); Tue, 05
    Jun 2012 13:21:21 +0800
    From: 88121099 <[email protected]>
    To: [email protected]
    Message-ID: <[email protected]>
    Date: Tue, 05 Jun 2012 13:21:21 +0800
    X-Mailer: Sun Java(tm) System Messenger Express 6.3-6.03 (built Mar 14
    2008; 32bit)
    MIME-Version: 1.0
    Content-Language: en
    Subject: testing 2
    X-Accept-Language: en
    Priority: normal
    Content-Type: text/plain; charset=us-ascii
    Content-Disposition: inline
    Content-Transfer-Encoding: 7bit
    X-PMX-Version:, Antispam-Engine:, Antispam-Data: 2012.6.5.51221

    Reporting-MTA: dns;
    X-Postfix-Queue-ID: 13A3A8369
    X-Postfix-Sender: rfc822; [email protected]
    Arrival-Date: Tue, 5 Jun 2012 13:21:22 +0800 (HKT)
    Final-Recipient: rfc822; [email protected]
    Original-Recipient: rfc822;[email protected]
    Action: delayed
    Status: 4.4.1
    Diagnostic-Code: X-Postfix; connect to[]:25: Connection timed out
    Will-Retry-Until: Fri, 8 Jun 2012 13:21:22 +0800 (HKT)

    MX record for email domain MX preference = 10, mail exchanger = win-server-2008.edwinpong.i
    nfo nameserver = nameserver = nameserver = nameserver = nameserver = internet address = internet address = internet address = internet address = internet address = internet address =

    What I have done but still cannot receive external mails:
    1) telnet my exchange server at port 25 successfully.
    2) opened port 25 at router to allow access to my server.
    3) closed firewall and anti-virus.
    4) receive SMTP connector listens to
    5) uncheck all secure certification at receive SMTP connector to receive external mails but still unsuccess.

    My conclusion:
    External mails are successfully sent to my exchange server but can't establish SMTP connection due to some unknown reasons. To make it simple, I just set up send SMTP connector at the exchange server and receive SMTP connector was set by default. So I think it is correct setting. Also I can't find any internal logs at the Exchange Server and event viewer. So I don't have any information or idea to resolve this problem. Also I have tried to install the server in Windows Server 2003 but got the same result.

    Could any body help me!!

  • #2
    Re: exchange server 2007 can't receive external mail

    Either the port isn't open, your networking isn't correct (wrong default gateway etc) or you have put restrictions on the Receive Connector.

    Simon Butler
    Exchange MVP

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