spf.realsender.com has no AAAA records.
Apex domains cannot have CNAME records.
spf.realsender.com has no MX records.
ns-1257.awsdns-29.org
Amazon Web Services
Route 53
ns-1640.awsdns-13.co.uk
Amazon Web Services
Route 53
ns-412.awsdns-51.com
Amazon Web Services
Route 53
ns-854.awsdns-42.net
Amazon Web Services
Route 53
Zone apex
Start of authority
Email
Serial
1
Refresh
2h
Retry
15m
Expire
14d
Negative cache TTL
1d