0.49.138.202.core.vocus.network has no MX records.
Question and response
Question
dig 0.49.138.202.core.vocus.network. MX
Answer
The response has no answer records.
Authority
vocus.network. 86420 SOA ns1.vocus.network. root.vocus.network. 2026021908 10800 3600 604800 86420
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0