12-03-2017
Sorry, I didn't notice the
-t, there
Regarding the -k description, it is a bit lengthy in the man pages, and it is not even detailed enough.
For example, I had to find out the hard way that a global
-n option does not work well with multiple key fields, but giving each
-k a postfix
n works. I even found that
-k 1,1 is often better than
-k 1. But never found out if
1,1n is equivalent with
1n,1 or
1n,1n...
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LEARN ABOUT DEBIAN
postfix-nochroot
postfix-nochroot(8) System Manager's Manual postfix-nochroot(8)
NAME
postfix-nochroot - change /etc/postfix/master.cf to not use chroot
SYNOPSIS
postfix-nochroot
DESCRIPTION
Renames /etc/postfix/master.cf to /etc/postfix/master.cf.bak and creates a new /etc/postfix/master.cf file with every service configured to
not use chroot. Every modified line is commented. It also restarts Postfix (to apply the change) and rmoves the unused chroot directories
/var/spool/postfix/{etc,lib,usr} .
Using a chroot environment makes upgrades more difficult and gets in the way when running SE Linux (without actually providing any security
benefit in a SE Linux system).
SEE ALSO
selinux(8), sestatus(8), selinuxenabled(1), check-selinux-installation(8), selinux-config-enforcing(8), selinux-policy-upgrade(8),
http://wiki.debian.org/SELinux - More about SELinux Debian install, http://etbe.coker.com.au/tag/selinux/ - Russell's SE Linux blog posts,
http://etbe.coker.com.au/2008/08/02/postfix-and-chroot/ - post about this script.
AUTHOR
This program and it's man page was written by Russell Coker <russell@coker.com.au> for the Debian system (but may be used by others). Per-
mission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 3.
On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL-3.
postfix-nochroot(8)