host71.alpi.bcn.ackstorm.net has no MX records.
Question and response
Question
dig host71.alpi.bcn.ackstorm.net. MX
Answer
The response has no answer records.
Authority
ackstorm.net. 600 SOA nsone.ackstorm.com. hostmaster.ackstorm.com. 2025111901 14400 3600 864000 14400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0