SOA
Start of Authority
Primary NS
Mailbox
hostmaster.crond.net
Serial
6
Refresh
14400
Retry
3600
Expire
604800
Minimum TTL
86400
NS
Nameservers
MX
Mail Exchangers
TXT
TXT Records
v=spf1 mx include:sendgrid.net ~all
v=DMARC1; p=none; rua=mailto:postmaster@crond.net
google-site-verification=fnf4phE4FvyrMjl3xEfYQQvd3Rl2VRl4YxrgeddViHk
A