linux.mahahosting.com has no MX records.
Question and response
Question
dig linux.mahahosting.com. MX
Answer
The response has no answer records.
Authority
mahahosting.com. 1800 SOA sandy.ns.cloudflare.com. dns.cloudflare.com. 2398097714 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0