netlify site name : optimistic-einstein-b62341.netlify.app
custom domain: ding-rui.org
I was trying to add MX record to DNS. It throws me error as “dns_api ding-rui.org - ding-rui.org/MX: 521 -”
MX record to add:
priority: 10
value: mx.yandex.net
Thanks for any help! 
@frankzhangsyd, I’m having the same issue. Perhaps there is a site wide (netlify) issue.
I am also unable to add MX records.
fool
4
Could you tell us what record(s) you’d like added if the problem persists, @ianthedesigner?
@frankzhangsyd, I got yours put in place manually.