Email issue, where to look?

I am getting error with email delivery.
I dont know if this is Registrar of domain, Cloudflare or Host ?

Any help appreciated.
DNS Error: DNS type ‘mx’ lookup of xyz.com responded with code NOERROR DNS type ‘aaaa’ lookup of [xyz.com). responded with code NXDOMAIN DNS type ‘a’ lookup of [xyz.com). responded with code NXDOMAIN

This error can be due to various reasons.

If the domain pops up with this code, I suggest you to check this #tutorial

Your MX records are pointed at Googles’ email infrastructure and are not generating the reported error in my response to my query.

;; QUESTION SECTION:
;xyz.com.                       IN      MX

;; ANSWER SECTION:
xyz.com.                3600    IN      MX      10 aspmx3.googlemail.com.
xyz.com.                3600    IN      MX      5 alt1.aspmx.l.google.com.
xyz.com.                3600    IN      MX      5 alt2.aspmx.l.google.com.
xyz.com.                3600    IN      MX      1 aspmx.l.google.com.
xyz.com.                3600    IN      MX      10 aspmx2.googlemail.com.```