spf.maildirect.in has no MX records.
Question and response
Question
dig spf.maildirect.in. MX
Answer
The response has no answer records.
Authority
maildirect.in. 80 SOA ns1.qlc.co.in. root.qlc.co.in. 2009013090 10800 3600 432000 38400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0