 Version?
Which version of zcs are you running? The latest version uses postfix-2.2.5 (the M3 build) and you've got 2.2.3 - but that's what the status command is checking for.
Here's my confusion - the zmcontrol command calls zmmtactl for mta status - which calls postfix status for the postfix status.
postfix status is exiting with zero, which means it's fine. But zmmtactl is receiving a 1, which is bad... |