The Config-Cascade hostname service is extended with options to provide an additional hostname for guest users. The guest hostname may be supplied
via the property com.openexchange.guestHostname in the config cascade now once the config-cascade hostname service is running.

Further details about the guest hostname are available at https://oxpedia.org/wiki/index.php?title=AppSuite:Sharing_and_Guest_Mode#Gu est_Hostname .