There is a nice little feature in the Kopano DeskApp that makes you happy if you server an environment that holds a tad more than a dozen users and where you want to make it as easy as possible to login into the Kopano account for DeskApp users: autodiscovery of the servername.
By adding a txt record to your DNS Zone, you can point the users based on their e-mail address to the correct WebApp address. Since the DeskApp connects to the configured WebApp host, this is where the setting comes from.
$ dig -t txt bytemine.net | grep webapp bytemine.net. 170 IN TXT "kdiscover https://webapp.bytemine.net/"
Nice little settings helper!