The above error occurs when your Notes client attempts to access the database on a server it does not have direct access to. So what the Notes client does is 'Pass through' a server it does have access to to reach the server containing the database.
The server configuration document for the server the Notes client is attempting to pass through contains settings for controlling who can pass thru it. You can check these settings by opening the 'Security' tab of the server document and looking at the 'Passthru Use' section.in that particular server as mentioned in the screen shot.
To resolve the issue either update the passthru settings for your servers or access a replica of the database which is located on a server you have direct access to.