distribute.twiptron.com has no MX records.
Question and response
Question
dig distribute.twiptron.com. MX
Answer
The response has no answer records.
Authority
twiptron.com. 3600 SOA dns.twiptron.com. hostmaster.twiptron.com. 1988781684 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0