When the website is recognized by cloudflare

When the website is recognized by cloudflare it does not recognize email records.

Hello, the A record pointed to by the MX record of the mail server cannot enable the proxy.

I don't know, can you explain?

"A" record contains "mail" (second record on the list) shouldn't be proxied. edit this record and make it dns only.

It does that but cloudflare automatically changes it to the site's domain name.

How can I do that?

It works now, thanks for your effort.