Event from add-on Splunk app Windows source without domain name

[ibabansk]

Good afternoon! Splunk Add-on for Microsoft Windows version 8.0.0 Splunk TA Windows, generates a data source without a domain name, i.e. just a host name. How can I bulk configure to display hostname with domain e.g. pc1.domain.com. Use in server.conf - hostnameOption = fullyqualifiedname, you can not because you need to distribute the configuration on a large number of PC
via forwarder manager. Such a setup can be done through props and transformer

[ibabansk]

Thank you for the solution provided, but unfortunately it is not applicable. The thing is that in fact we get two event sources Computer1 and Computer1.local.domain. If you disable Splunk Add-on for Microsoft, all events come from the source Computer1.local.domain

[lkutch_splunk]

This isn't exactly the answer to the question that you've asked, but if you're using Enterprise Security, it sounds like you could possibly use entity zones to help specify your different domains: 
https://docs.splunk.com/Documentation/ES/6.4.1/Admin/Entityzones

Let me know if that helps.