Ken Wright:
> On Tue, 2022-01-04 at 07:30 -0500, Wietse Venema wrote:
> > Ken Wright:
> > > Okay, I ran sudo postfix set-permissions.? It ran with no trouble
> > > whatsoever; no errors, warnings, nothing.? Still getting the exact
> > > same messages in mail.log.
> >
> > Then your file system is mounted with 'nosuid' option. Don't do that.
>
> I checked /etc/fstab; nothing had the 'nosuid' option.
There is a Linux feature called no_new_privs that prevents a process
from gaining privileges for example by running a setuid(setgid)
program file. That would cause postdrop and postqueue fail with
permission errors.
Wietse
