as.initialesonline.net has no MX records.
Question and response
Question
dig as.initialesonline.net. MX
Answer
The response has no answer records.
Authority
initialesonline.net. 600 SOA ns.acropolistelecom.net. hostmaster.acropolistelecom.net. 2015072902 86400 21600 3600000 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0