Not receiving emails

Not receiving emails

Hello,

I've configured my MX addresses (MXlookup shows zoho's addresses), but I still don't receive any emails (I can send them just fine).

While i'm trying to send an email to my zoho account from my gmail account I got 553 Relaying disallowed error. I've read I need to click envelope icon in admin => domains, but it says it will DISABLE my config, instead of enabling it.

I'm using cloudflare.