In order to resolve sender numbers, an installed MetaDirectory is required. The Meta Directory is liable to costs.
This setting is not available if you selected "Store ixi-UMS messages only locally".
The connection data to the MetaDirectory must be entered. The MetaDirectory data base can be installed on the ixi-UMS Business-server or on another server.
The sender numbers are searched for in the fields:
When the checkmark is set at "Use the first data..." and several results are found with a search, the data from the first data record are entered. If this option is disabled, data is only entered in the mail when the result is unambiguous.