Not receiving emails

Not receiving emails after config change. Changed back but still not receiving. SMTP log says:

Reject delivery to for mail 3557BB
Set mail state to REMOVED

It was working before the change. The change I made was “DNS Check”. I enabled both “Reject if the domain has no MX” and “Reject of IP does not match HELO/EHLO”. But I unchecked them again and saved and still no joy. Even restarted windows server axigen services and still no joy.