On Wed, Jul 31, 2024 at 10:36:00PM +0200, John Fawcett via Postfix-users wrote:
> My first thought was to follow RFC7505 and define null mx records for my > example.com that has no email accounts, so no server will bother to try and > deliver email to it. > > https://www.rfc-editor.org/rfc/rfc7505.html Nothing to worry about, just do it. There is no implication that hosts under that no host in that domain is an MTA for some other domain. > My doubt is that since the outgoing email server identifies itself as > host1.example.com in the EHLO, is there a requirement or even an expectation > that postmas...@example.com will be able to receive email. In that case I'd > need to define an incoming email server only for that purpose, since there > are no other email addresses in my example.com Not a concern. So long as the HELO name has an IP address that ideally resolves back to (just) that name, you're all set. -- Viktor. _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
