On Thu, 6 Aug 2015, Viktor Dukhovni wrote:
# postfix set-permissions Except on Debian systems where it might not work, because the Debian "postfix-files" file (in $daemon_directory for recent enough releases) often has more files list than are actually deployed by Postfix packages.
Viktor, I run Slackware.
In any case all the required permissions are listed in "postfix-files".
Thanks for both pointers. That's what I wanted to learn. Regards, Rich