[otrs] Which setting controls if notification emails are sent during an agent's vacation?

Most recent version of OTRS5 here. Question: Which setting controls if notification emails are sent during an agent's vacation? Why am I asking: An agent is on vacation for 1 week, set vacation in OTRS for that period of time. But today, a ticket was assigned to him so he can look at it after his vacation. Still, he received a notification email. I expected to notitification to be sent for agents "on vacation". -- Ralf Hildebrandt Charite Universitätsmedizin Berlin ralf.hildebrandt@charite.de Campus Benjamin Franklin https://www.charite.de Hindenburgdamm 30, 12203 Berlin Geschäftsbereich IT, Abt. Netzwerk fon: +49-30-450.570.155