mailtest.visionreply.com has no NS records.
NS records for this zone are defined at visionreply.com.
NS records for this zone are defined at visionreply.com.
Question and response
Question
dig mailtest.visionreply.com. NS
Answer
The response has no answer records.
Authority
visionreply.com. 3600 SOA ns1.loopia.se. registry.loopia.se. 1773878400 14400 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0