On Sun, 25 Jun 2017, Wietse Venema wrote:
Must be owned by root, mode 755. All that is taken care of with "postfix set-permissions", which should happen automatically as part of the installation procedure.
Wietse, OK.
Of course no such warranties exist if you do things by hand.
I use a SlackBuilds.org script. Perhaps that's considered 'doing things by hand,' but it's what I've used for almost two decades. I'll contact the package maintainer about running postfix set-permissions. Thanks, Rich