sabela.saix.net has no MX records.
Question and response
Question
dig sabela.saix.net. MX
Answer
The response has no answer records.
Authority
saix.net. 3600 SOA igubu.saix.net. dnsadmin.saix.net. 2026013909 10800 3600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0