mail-out-01.mediaocean.com has no MX records.
Question and response
Question
dig mail-out-01.mediaocean.com. MX
Answer
The response has no answer records.
Authority
mediaocean.com. 1800 SOA dns01.donovandata.com. domainadmin.mediaocean.com. 2026030201 28800 3600 1209600 1800
Additional
. 0 OPT ; payload 1500, xrcode 0, version 0, flags 0