mx2.accessline.com has no CNAME records.
Question and response
Question
dig mx2.accessline.com. NS
Answer
The response has no answer records.
Authority
accessline.com. 2883 SOA ns2.intermedia.net. hostmaster.intermedia.net. 2026021201 3600 1800 2419200 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0