I also did a postfix reload, and a zmmtactl reload (it gives syntax errors, but seems to reload postfix anyway) - I also restarted with zmmtactl restart, all of these failed to add zen.
Following the exact same steps to add the two, adding zen does not get added to the postconf, but sbl does (add zen, check postconf, no zen; add sbl, check postconf, sbl is there)
Checking the zimbra config with zmprov gacf | grep zimbraMtaRestriction shows that zen has been added, but it is not in the postfix conf, only sbl is. Re-adding zen using the +zimbraMtaRestriction method and then reloading postfix also does not add it.
The only thing I have not tried is a "full" restart, zmcontrol restart - maybe there is something else that needs reloading/restarting to inject the zen conf?
Nice info for adding things one at a time, instead of the whole lot though, thanks
