Keeping mail working.
THE RULE
Mail never goes through the proxy. Records relating to mail must be DNS only.
WHAT TO CHECK
MX records present and pointing at the correct hostname The A record for that mail hostname set to DNS only SPF record present and correct DKIM record present DMARC record, if you use one
WHY MAIL BREAKS AFTER A CLOUDFLARE MOVE
Usually one of two things: the MX records did not import, or the mail hostname was proxied.
Both produce mail stopping the moment nameservers change.
CHECKING THE RECORDS
Compare against cPanel > Email Deliverability, which shows the records we expect for your domain.
Copy them exactly into Cloudflare.
CLOUDFLARE EMAIL ROUTING
A separate Cloudflare feature that forwards mail. It replaces your MX records.
Do not enable it unless you intend to stop using hosting mailboxes, because it takes over mail delivery for the domain.
IF MAIL HAS STOPPED
Check MX records first, then the proxy state on the mail hostname. Those two account for nearly every case.
