yny1.oracleemaildelivery.com has no MX records.
Question and response
Question
dig yny1.oracleemaildelivery.com. MX
Answer
The response has no answer records.
Authority
yny1.oracleemaildelivery.com. 300 SOA ns1.p68.dns.oraclecloud.net. hostmaster.yny1.oracleemaildelivery.com. 728351 3600 600 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0