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The way that the logon client locates the logon agent is by DNS lookup. The logon client will look up a hostname called “dsagent” in the domain's DNS server. For instance, if the domain name of your organization is “acme.org” then it will look for “dsagent.acme.org”
The diagram below illustrates the data flow of the computer logon process
In order for the computer logon client to discover the logon agent, you must add the hostname "dsagent" to your DNS server.
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