Mx record with IPv6

I have written a AAAA record with ipv6 and can access it host nvoids com

I have setup hmailserver and checked with port checker
and all ports are working fine.

I have written a mx record with host nvoids com
but that is not working according to - dns checker

Is it possible to have a mx record with AAAA record

This domain appears to have Yandex mail servers.

dig nvoids.com mx +short
10 mx.yandex.net.

That mail server has a AAAA record.

dig mx.yandex.net AAAA +short
2a02:6b8::31

The host itself nvoids.com is proxied by Cloudflare. While it has both an A and AAAA record, those records are of Cloudflare’s edge and Cloudflare will only proxy traffic on supported ports. Network ports · Cloudflare Fundamentals docs

If you want to host your own mail server, you need a unique hostname that is not proxied (:grey:) … e.g. mail.nvoids.com to communicate with the server directly.

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