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HELP! Cannot OWA from outside network but https works

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  • HELP! Cannot OWA from outside network but https works

    i am pulling all my hair out trying to get this figured out.

    today our OWA started acting up.
    Exchange 2003

    if we type mail.domain.com it gets forward automatically to
    https://mail.domain.com/exchange It's been working fine for over a year without issues.

    Today it started to act up. It works fine in local network. but from outside if the user types http://mail.domain.com, it just sits there then time out.
    user can use https://mail.domain.com then it'll get forward properly.

    Any idea what might be going on?

    No firewall changes were made and I double checked the ports but they are open.
    Nothing in IIS was touched.
    Only I was working on the Virtual SMTP server putting connection filters, but I am not even sure if this was the culprit..

    Any help would be greatly appreciated! I have no idea what change I made caused this!

  • #2
    Re: HELP! Cannot OWA from outside network but https works

    How are you doing the forward?
    It sounds like either the port forwarding isn't working, or a host header is getting involved somewhere and it doesn't actually match. I would be looking at IIS to begin with.

    It isn't DNS, because that would stop SSL from working as well.

    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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    • #3
      Re: HELP! Cannot OWA from outside network but https works

      I don't have host header setup. This is the index.html file how it gets forwarded to https:
      <html>
      <head>
      <title></title>
      </head>
      <script language='javascript'>
      function autogo() {
      window.location.href='https://mail.domain.com/exchange/';
      }
      </script>
      <body onLoad='autogo();'>
      </body>
      </html>
      and custom error:
      <%

      If Request.ServerVariables("HTTPS") = "off" Then
      Response.Redirect "https://" & Request.ServerVariables("HTTP_HOST") & "/Exchange"
      End If

      %>
      Last edited by VoiD; 8th January 2010, 02:35.

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      • #4
        Re: HELP! Cannot OWA from outside network but https works

        okay.. got this solved..
        ended up being the firewall.. not sure how but i deleted all the rules for Exchange and added them again and now it works.. So much for wasted 8 hours..

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