On Wed, Dec 31, 2025 at 01:27:38AM +1100, Viktor Dukhovni via Postfix-users
wrote:
> On Tue, Dec 30, 2025 at 02:16:09PM +0000, Chris Green via Postfix-users wrote:
>
> > My main.cf has myhostname commented out which leaves postfix to work
> > it out for itself, should I revert to setting myhostname explicitly?
>
> Well, what you should definitely set explicitly is "myorigin", which
> determines the domain parts of unqualified addresses. You would
> generally also explicitly set "mydomain", especially, if like me, you
> prefer the historical "append_at_mydomain = yes", rather than its new
> default value "no".
>
I do have myorigin set, the relevant part of main.cf is:-
# myhostname = q957.zbmc.eu
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = zbmc.eu
mydestination = zbmc.eu, $myhostname, chris.zbmc.eu
# relayhost = [mail.gandi.net]:465
relayhost = [smtp-auth.mythic-beasts.com]:465
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
--
Chris Green
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