Problems with receiving emails

Good morning I am writing to ask for support please, because I can not receive emails, I get this error: DNS Error: 14777506 DNS type 'mx' lookup of domain.com responded with code NOERROR 14777506 DNS type 'aaaa' lookup of mail.domain.com. responded with code NXDOMAIN 14777506 DNS type 'a' lookup of mail.domain.com. responded with code NXDOMAIN I already checked the MX record in the Cpanel configuration and where I manage the domain but everything is ok. Stay tuned. Thanking in advance for the valuable support