ip31-115-245-80.crelcom.network has no MX records.
Question and response
Question
dig ip31-115-245-80.crelcom.network. MX
Answer
The response has no answer records.
Authority
network. 3600 SOA v0n0.nic.network. hostmaster.donuts.email. 1771734230 7200 900 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0