550: 5.1.1 Address does not exist

Hello everyone. We have Bluehost as our email provider.
I made CPanel changes in Cloudflare (that Bluehost told me to change) and now our email is broken.
I can either follow what Bluehost tells me to do or do I do what Cloudflare’s (automated system) tells me what to do.
All was working with our emails until I said “yes” to letting Cloudflare automatically fix.
I originally went into Cloudflare because Gmail.com emails were not receiving our company emails.
Lastly, I have been told that we have no Reverse DNS. I do not know how to configure that.

Thank you.

Hi,

I have a similar issue.
I get this error when I try to send an email to my domain:
host route1 mx cloudflare

SMTP error from remote mail server after RCPT TO:<hello@…>:

550 5.1.1 Address does not exist. MGyqsHDgj5aT

I can send email from that address, but can’t received.

Can someone point me in the right direction?
Thanks