mail.upallnighthosting.com has no MX records.
Question and response
Question
dig mail.upallnighthosting.com. MX
Answer
The response has no answer records.
Authority
upallnighthosting.com. 3600 SOA vps207601.vps.ovh.ca. root.vps207601.vps.ovh.ca. 1763793399 3600 600 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0