Is there a way to disable OOO temporarely for all users?
The closest I could think of by now is to write a script that runs
zmprov ma USER-ID@zimbra.domain.com zimbraPrefOutOfOfficeReplyEnabled FALSE
for all users and remembers the old state (querying with zmprov ga) first to restate it later.
I hope there is a easier way to achieve what I'm looking for.