appsrvs2.r01.ru has no MX records.
Question and response
Question
dig appsrvs2.r01.ru. MX
Answer
The response has no answer records.
Authority
r01.ru. 600 SOA ns5.nic.ru. noc-dns.nic.ru. 2014080670 10800 1800 604800 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0