Custom internet domains not catagorized as Local Intranet

Discussion in 'Internet Explorer' started by ToLo, Nov 17, 2006.

  1. ToLo

    ToLo Guest

    We have a custom internal top-level domain (*.xyz) we use for internal
    purposes. If we stick a proxy exception in the IE7 proxy exceptions list of
    '*.xyz', IE7 will not catagorized an internal website that we goto with the
    domain name as the 'Local Intranet' zone -- it treats as external. That is:

    If we define in dns two hosts in our DNZ zone '': - -

    And we attempt to go to, IE7 works properly and
    catagorized the site as local intranet and bypasses our proxy server.

    BUT, if we go to '', IE7 attempts to shove the request out
    the proxy server (we can see this with our proxy logging). Unfortunately,
    since some of our internal sites use NTLM authentication, the user is then
    prompted for login/password since the proxy won't do NTLM on behalf of the

    AND, if we add '' as a trusted site, IE7 still shoves the
    request to the proxy server, HOWEVER if we go into the local intranet zone
    and add '' as an explicit local intranet site, everything
    works a-ok and the proxy is bypassed.

    Seems to me this is a bug in the proxy-bypass mechanism. According to the
    local intranet zone configuration, all hosts in the proxy exceptions list
    should be catagorized to the local intranet zone... why then when we refer to
    an intranet site with a local domain, this fails to be catagorized to the
    local intranet zone despite a proxy exceptions entry existing for the local
    domain (*.xyz)?
    ToLo, Nov 17, 2006
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