[Client_Address] returns the host name of the current client. If the host name cannot be found then the IP address of the current client is returned.
The [Client_Address] tag can be used in a conditional expression compared with a string that contains wildcards.
[If: (Client_Address) == '*.blueworld.com'] ... [/If] will return True for any clients that are on machines in the blueworld.com domain.
Use the [Client_Address] tag.
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