mail.artegic.net has no MX records.
Question and response
Question
dig venus.artegic.net. MX
Answer
The response has no answer records.
Authority
artegic.net. 3600 SOA ns15.artegic.net. it.artegic.net. 2026030300 36000 3600 3600000 345600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0