Out of the box the out-of-office notifications are not enabled in Zentyal.
Is there any reason not to enable this?
For anyone interested in this, this requires modification of the stubs/mason files.
The standard stub is first copied from the default location to the /etc/zentyal/stubs location.
This is where zentyal looks for modified mason files. This way after an upgrade, you have the new stubs in /usr/share/zentyal/stubs and the custom ones in /etc/zentyal/stubs.
sudo mkdir /etc/zentyal/stubs
sudo mkdir /etc/zentyal/stubs/sogo
cp /usr/share/zentyal/stubs/sogo/sogo.conf.mas /etc/zentyal/stubs/sogo/
sudo nano /etc/zentyal/stubs/sogo/sogo.conf.mas
find the line
SOGoVacationEnabled = NO;
and change to:
SOGoVacationEnabled = YES;
save the file and restart SOGo from the dashboard.
Now when you login to your webmail, click the settings icon behind your name, click " mail", now you see the out-of-office option.