spf_omcs.oracleoutsourcing.com has no MX records.
Question and response
Question
dig spf_omcs.oracleoutsourcing.com. MX
Answer
The response has no answer records.
Authority
oracleoutsourcing.com. 900 SOA ns1.p201.dns.oraclecloud.net. hostmaster.oracle.com. 2026020201 10800 300 1209600 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0