Is there a standard way to leave notifications on but turn off email?
I have a sink handling the notification, but can't find any way to turn off the email part that seems reliable.
The easiest is to add the following line to /etc/postfix/main.cf
default_transport = discard
But that will get over-written by a salt deploy. So if there isn't a better alternative, it would be nice to have another OMV config called OMV_POSTFIX_MAIN_DEFAULT_TRANSPORT and the corresponding lines in the salt template salt/omv/deploy/postfix/files/main.cf.j2