Are you aware of the followings -
- DNS MX, SPF, DKIM and DMARC settings?
- RDns settings?
Do you have access to your DNS records? Usually this should be from DO administration panel where from you can setup certain dns records but for PTR record, we need to work with DO technical contact. So you need to make sure you can provide me their technical contact or hook me up with them.
Rest of the things, I can take care. Thank you.
Probal