I frequently given notification that there's something wrong with my MX records.

I place MX records as follows:

MX 10 mx.(domain.name).

MX 20 mx2.(domain.name).

MX 50 mx3.(domain.name).

mx.(domain.name).   CNAME mx.zoho.com.

mx2.(domain.name).   CNAME mx2.zoho.com.

mx3.(domain.name).   CNAME mx3.zoho.com.

I know that records is unefficient, but it directly points to zoho mx server (no A records).

If there's any change in zoho dns, it would simply follow what A records of zoho dns dictate.

So far every email delivered smoothly into my account.

I think zoho notification should capable to distinguish mx record directly pointed to ip address and mx record using CNAME to zoho MX record.

Thanks.