As for “asking AWS for rdns/removing email restrictions”, I’ve always found that explaining what you have done to secure the server and what you have put in pla

As for “asking AWS for rdns/removing email restrictions”, I’ve always found that explaining what you have done to secure the server and what you have put in place to prevent the IPs from sending spam helps (as in my requests have always been fulfilled first try and never had them reply asking for more info / do you know what you are doing.)