Error "553 Relaying disallowed. Invalid Domain"

Error "553 Relaying disallowed. Invalid Domain"

I have this error "553 Relaying disallowed. Invalid Domain" when sending an email to any email address. But I still receiving email from other emails. I checked the following :
  1. MX verification failure
  2. DKIM ok,
  3. SPF Records have been pointed successfully
Could you help?

regards