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As you can see, the attribute eduPersonPrincipalName is being used as the username. This is the attribute that should always be send by the IdP.
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I had problems getting things to work if the environment variable was REMOTE_USER. I think there is some issue with mod_auth_mellon trying to overwrite that, but I didn't have time to find the cause. It worked with everything else than REMOTE_USER though |
By this time, you should be able to download the Service Provider metadata from https://otrs.example.com/mellon/metadata, and use it to add it to your IdP, thereby creating a trust relationship.
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