- Used Zammad version: 2.7.x
- Used Zammad installation source: package (2.7.0-1541065674.7a8d1d03.bionic)
- Operating system: Ubuntu 18.04.1 LTS
- Browser + version: Firefox 63
We want to setup a quiet closed ticket system for our main customers. To avoid spam and tickets from unknown users, we would like to disable ticket creation from users unknown to Zammad. Is there a way to do this?