rev.paritel.fr has no MX records.
Question and response
Question
dig rev.paritel.fr. MX
Answer
The response has no answer records.
Authority
rev.paritel.fr. 1440 SOA tic.ipnotic-telecom.fr. hostmaster.ipnotic-telecom.fr. 2015082700 10800 900 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0