On Tue, 11 Jun 2024 at 10:36, Matus UHLAR - fantomas via Postfix-users < postfix-users@postfix.org> wrote:
> > >BTW in the meantime, if I add this (where mx2.mydomain.com is our > secondary > >MX hostname), I take it that would be a good idea: > > > >permit_mx_backup_networks = $mynetworks mx2. mydomain.com > > no, these are IP addreses or ranged, not hostnames. > have you added those domains to relay_domains? > OK so I assume I can use the IP address of the primary and secondary MX servers, since all our domains are hosted on those IPs. All the domains are in relay_domains, yes (the current setup we have has been running fine for many years: https://pastebin.com/S2q1fvaB and https://pastebin.com/MmWvZaVQ - I'm just wanting to bring it more up to date). > > To answer your previous question: yes, relay_domains is the list of > domains > your server is supposed to provide backup MX for, independently on > permit_mx_backup > and permit_mx_backup_networks setting. > > Thanks, but if that's the case what I don't understand is why the mail queue filled up with double-bounce messages to postmaster when I tried removing permit_mx_backup from the config. It seems that mx_backup is somehow necessary for our normal operation.
_______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
