I’m using mailcow as primary mail server. But, in the our infrastructure are other mail servers autorized to send mail for @mydomain.com. Thare is no-reply@mydomain.com which is used to send some notifications…
I have no inbox no-reply, and mailcow is rejecting mail from our other mail servers which are sending from no-reply@mydomain.com
Can I allow receiving any mail, even if the inbox doesn’t exist (of course, of SPF/DMARK)