ultradns2.com has no MX records.
Question and response
Question
dig ultradns2.com. MX
Answer
The response has no answer records.
Authority
ultradns2.com. 300 SOA pdns1.ultradns.net. domains.vercara.com. 2022071123 300 900 86400 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0