Question and response
Question
dig spf.mailcore.net. NSEC3
Answer
The response has no answer records.
Authority
mailcore.net. 3600 SOA ns21.cloudns.net. postmaster.mailcore.com. 2026022502 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0