ott.volia.com has no MX records.
Question and response
Question
dig ott.volia.com. MX
Answer
The response has no answer records.
Authority
ott.volia.com. 1800 SOA ns1.volia.net. hostmaster.volia.com. 2025121900 43200 3600 1814400 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0