It broke because as Bastian pointed out in CentOS 8 the Postfix
service definition (postfix.service) changed with the addition of
PrivateTmp=true. CentOS 7 did not have that so used the "standard"
/tmp. Your process WAS WORKING - just not writing to the /tmp you
were looking at, but to the postfix service's private /tmp.
Pardon me, what I meant was that this used to work with CentOS 8.
That's interesting... 8.4 saw the upgrade to Postfix 3.5.8 (from 3.3.1
I believe) which was a major change, but nothing in the release notes
(see /usr/share/doc/postfix/README-RedHat.txt on an 8.4 system)
mentions a change to the .service file, nor at
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/new-features#enhancement_infrastructure-services.
And the changelog only refers to the one bugzilla:
* Fri Nov 13 2020 Jaroslav Škarvada <jskar...@redhat.com> - 2:3.5.8-1
- New version
Resolves: rhbz#1688389
When did you first see the change?
We are possibly straying a little from this mailing list's function...
Simon.
--
Simon Wilson
M: 0400 12 11 16
