Dear all,
I recently changed my mailcow installation from a classic netcup “Root-Server” to an “vServer (ARM64)”.
Unfortunately this also means that I have lost the “history” / “credibility” of the IP of the old server.
Now I get the following temporary rejection from a recipient server:
“554 #5.7.1 Delivery not authorized, message refused. - Reason: Bad SBRS-Score. Please contact your local administrator.”
As I´m using mailcow just for my and my familys private use I`m not sending ourt much e-mails it could take quite long until the new IP has gained a better score.
I`m wondering if it will be possible for example to send out only e-mails which got rejected in the first place by a professional e-mail provider like for example Postmark?
If something is possible I would love to get a detailed how-to on how I could achieve such a relay.
Or alternatively what could I do to inprove that SBRS Score?
Thanks,
Angus MacGver