How to integrate request tracker 4.0.8 with active directory 2008 server

try this. in your apache config place:

<Location /rt>
        AddDefaultCharset UTF-8
        SetHandler perl-script
        PerlResponseHandler RT::Mason
        Require valid-user
        AuthType Basic
        AuthName "RT Server"
        AuthBasicProvider ldap
        AuthzLDAPAuthoritative Off
        AuthLDAPBindDN "domainName\someExistingADUser"
        AuthLDAPBindPassword passwordForThatUser
        AuthLDAPURL ldap://address.of.your.domain.controller:389/ou=Users,dc=some,dc=name,dc=ofyourdomain?sAMAccountName?sub?(objectClass=*)
</Location>
<LocationMatch "/rt/NoAuth">
        Satisfy Any
        Allow from all
</LocationMatch>
<LocationMatch "/rt//REST/1.0/NoAuth">
        Satisfy Any
        Allow from all
</LocationMatch>

and in RT_SiteConfig.pm add:

Set($WebExternalAuth , 1);
Set($WebFallbackToInternalAuth , 1);
Set($WebExternalAuto , 1);

restart apache and hope for the best :]