Windows Vista Forums

Having problems accessing external network SMTP servers on port 25
  1. #1


    chris w Guest

    Having problems accessing external network SMTP servers on port 25

    Hi Guys,

    Just installed Windows Small Business Server 2008 Standard, with Service Pack 2.

    Now trying to get Exchange Server 2007 to send external emails to my ISPs smart host.

    The SBS machine has IP:192.168.1.220, I have a ADSL router at IP:192.168.1.1 and a test client running XP Pro at IP:192.168.1.89

    I have temporarily disabled the Firewall in SBS 2008.

    So; if I do;

    telnet 80.168.45.10 25 from the XP machine I get this;
    220 relay.clara.net ESMTP [relay05]

    telnet 192.168.1.220 25 from the XP machine I get this;
    220 FACTORYSRV.nsl.local Microsoft ESMTP MAIL Service ready at Tue, 30 Mar 2010 16:13:42 +0100

    telnet 192.168.1.220 25 from the SBS machine I get this;
    220 FACTORYSRV.nsl.local Microsoft ESMTP MAIL Service ready at Tue, 30 Mar 2010 16:14:53 +0100

    telnet 80.168.45.10 25 from the SBS machine I get this;
    Connecting To 80.168.45.10...Could not open connection to the host, on port 25: Connect failed



    I even setup a SMTP server on a client PC and telneted from the SBS machine onto the client using port 25.

    It appears that SBS 2008 won't let me connect using port 25 to a server on an external network, has anyone experienced this before?

    Thanks.


    Submitted via EggHeadCafe - Software Developer Portal of Choice
    BizTalk Configure and Send SMTP Mail Based on Message Within an Orchestration
    http://www.eggheadcafe.com/tutorials...e-and-sen.aspx

      My System SpecsSystem Spec

  2. #2


    Cliff Galiher - MVP Guest

    Re: Having problems accessing external network SMTP servers on port 25

    Do you have any hardware firewall between your SBS box and the internet, or
    just the ADSL router?

    Did you finish configuring the SBS box using the wizards? Specifically the
    CTIW?

    -Cliff


    "chris w" wrote in message news:2010330112045chriswymark@newsgroup

    > Hi Guys,
    >
    > Just installed Windows Small Business Server 2008 Standard, with Service
    > Pack 2.
    >
    > Now trying to get Exchange Server 2007 to send external emails to my ISPs
    > smart host.
    >
    > The SBS machine has IP:192.168.1.220, I have a ADSL router at
    > IP:192.168.1.1 and a test client running XP Pro at IP:192.168.1.89
    >
    > I have temporarily disabled the Firewall in SBS 2008.
    >
    > So; if I do;
    >
    > telnet 80.168.45.10 25 from the XP machine I get this;
    > 220 relay.clara.net ESMTP [relay05]
    >
    > telnet 192.168.1.220 25 from the XP machine I get this;
    > 220 FACTORYSRV.nsl.local Microsoft ESMTP MAIL Service ready at Tue, 30 Mar
    > 2010 16:13:42 +0100
    >
    > telnet 192.168.1.220 25 from the SBS machine I get this;
    > 220 FACTORYSRV.nsl.local Microsoft ESMTP MAIL Service ready at Tue, 30 Mar
    > 2010 16:14:53 +0100
    >
    > telnet 80.168.45.10 25 from the SBS machine I get this;
    > Connecting To 80.168.45.10...Could not open connection to the host, on
    > port 25: Connect failed
    >
    > I even setup a SMTP server on a client PC and telneted from the SBS
    > machine onto the client using port 25.
    >
    > It appears that SBS 2008 won't let me connect using port 25 to a server on
    > an external network, has anyone experienced this before?
    >
    > Thanks.
    >
    >
    > Submitted via EggHeadCafe - Software Developer Portal of Choice
    > BizTalk Configure and Send SMTP Mail Based on Message Within an
    > Orchestration
    > http://www.eggheadcafe.com/tutorials...e-and-sen.aspx

      My System SpecsSystem Spec

  3. #3


    chris w Guest

    SBS 2008

    Hi Cliff,

    Thanks for the reply. It was my bad, my brain had crashed ;-) I had forgotten I had blocked any rogue port access on the ADSL router.

    Thanks anyway.

    Chris



    Cliff Galiher - MVP wrote:

    Do you have any hardware firewall between your SBS box and the internet,
    30-Mar-10

    Do you have any hardware firewall between your SBS box and the internet, or
    just the ADSL router?

    Did you finish configuring the SBS box using the wizards? Specifically the
    CTIW?

    -Cliff

    Previous Posts In This Thread:


    Submitted via EggHeadCafe - Software Developer Portal of Choice
    WPF Circular Progress Indicator
    http://www.eggheadcafe.com/tutorials...gress-ind.aspx

      My System SpecsSystem Spec

Having problems accessing external network SMTP servers on port 25 problems?

Similar Threads
Thread Thread Starter Forum Replies Last Post
Use more SMTP servers mark.k Vista mail 4 27 Apr 2010
What are the pop and smtp servers? Jessica Fournier Vista mail 22 14 Jul 2008
Cox pop and smtp servers Hime-Hime Vista mail 12 28 May 2007
servers smtp and pop3 callum Vista mail 4 11 Apr 2007
SMTP servers and relaying - Network connection setting =?Utf-8?B?c2Vtb2xpbmE=?= Vista networking & sharing 0 25 Aug 2006