Question and response
Question
dig nelnet.com. MX
Answer
nelnet.com. 1000 MX 0 nelnet-com.mail.protection.outlook.com.
Authority
nelnet.com. 3600 NS pdns04.domaincontrol.com.
nelnet.com. 3600 NS pdns03.domaincontrol.com.
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0