On Wed, Feb 10, 2021 at 05:31:47PM +0100, Matus UHLAR - fantomas wrote:
> > > Dnia 10.02.2021 o godz. 15:10:09 Chris Green pisze:
> > > >
> > > > These systems are all systemd'ed so I can't just run postfix as above.
> > > > However will 'postconf "myhostname = $(dnsdomainname)"' actually
> > > > change/set the myhostname value in main.cf? If so then simply putting
> > > > the postconf command in /etc/rc.local will do all I need, especially
> > > > after one reboot.
>
> > On Wed, Feb 10, 2021 at 04:40:13PM +0100, Jaroslaw Rafa wrote:
> > > Are these machines moved from domain to domain? Ie. is it possible that
> > > "dnsdomainname" will change, or is it the same all the time? If the
> > > latter,
> > > I don't see why do you need to set it at each reboot - it is enough to set
> > > it once. So I would try to set it in a script that deploys/copies Postfix
> > > configuration to the target machine.
>
> On 10.02.21 15:55, Chris Green wrote:
> > I could just edit the value in each system, but then all the main.cf
> > files would be different.
>
> setting "myhostname = $(dnsdomainname)" what Wietse recommended would not.
>
Yes, but since I'd have to add something to each rc.local (and they're
mostly default, i.e. as installed) it's more stuff to keep maintained.
> Setting FQDN hostname or maybe setting own IP with FQDN in /etc/hosts would
> not (I'm not sure whether te latter one would be enough, you can try)
>
Yes, I've tried these. I added the FQDN to /etc/hosts such that
dnsdomainname returns the domain but postfix doesn't use that. I've
also tried setting 'hostname <FQDN>' and that hasn't helped either.
> I was in your situation some years ago, when I maintained the same configs
> for multiple apps on multiple servers. I maintained /etc/hosts and
> hostnames per-machine and most of the rest was the same.
>
So I have the FQDN everywhere:-
chris@isbdGandi$ hostname
isbdGandi.isbd.uk
chris@isbdGandi$ more /etc/hosts
# The following lines are desirable for IPv4 capable hosts
127.0.0.1 isbdGandi.isbd.uk isbdGandi isbd localhost
...
...
chris@isbdGandi$ dnsdomainname
isbd.uk
chris@isbdGandi$
... and now postfix sends cron mail *to* ch...@isbd.uk as well as from
ch...@isbd.uk which doesn't help at all! I have an entry for chris in
/etc/aliases:-
chris:ch...@isbd.co.uk
but this doesn't seem to have worked. What am I doing wrong now? (I
have run 'newaliases').
--
Chris Green
