mx3.logica-ios.com has no CNAME records.
Question and response
Question
dig mx3.logica-ios.com. NS
Answer
The response has no answer records.
Authority
logica-ios.com. 3181 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1771972398 43200 3600 604800 3601
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0