Forgive me as I am not an expert but have you looked at transport_maps (for hardcoded addresses) https://www.postfix.org/STANDARD_CONFIGURATION_README.html#intranet or relay host for all mail: https://www.postfix.org/postconf.5.html#relayhost
There’s several guides online too: https://www.google.com/search?q=relayhost+postfix Such as: https://www.lunanode.com/guides/postfix_smtp_secure And: https://www.linode.com/docs/guides/postfix-smtp-debian7/ Hope this helps, Matthew > On 14 Jul 2025, at 7:30 am, oftl--- via Postfix-users > <[email protected]> wrote: > > Hi there, > > yes i did come across always_bcc. Unfortunately that's not what i'm > looking for. I'd like to see how both postfixes behave when receiving > the (as far as possible) same messsage. > > o/ > >> On Mon, Jul 14, 2025 at 08:21:11AM +0200, Florian Piekert via Postfix-users >> wrote: >> Hallo, >> >> did you check if the always_bcc directive meets that need? Put in a >> dedicated recipient on the other postfix, it'll get a bcc of each message >> inbound/outbound of the first postfix server. >> >> >>> Am 13.07.2025 um 21:12 schrieb oftl--- via Postfix-users: >>> Hi! >>> >>> This is what i'd like to do: >>> >>> Have an already up and running postfix *also* relay everything to another >>> postfix. >>> >>> The already running one should keep doing whatever it does and >>> *additionally* relay any and all mail to the other one. >>> >>> Is that possible? >> >> _______________________________________________ >> Postfix-users mailing list -- [email protected] >> To unsubscribe send an email to [email protected] > _______________________________________________ > Postfix-users mailing list -- [email protected] > To unsubscribe send an email to [email protected]
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