mx.paki.me has no MX records.
Question and response
Question
dig mx.paki.me. MX
Answer
The response has no answer records.
Authority
paki.me. 3600 SOA dns.paki.me. hostmaster.paki.me. 1463072772 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0