SOA
Start of Authority
Primary NS
Mailbox
awsdns-hostmaster.amazon.com
Serial
1
Refresh
7200
Retry
900
Expire
1209600
Minimum TTL
86400
TXT
TXT Records
include:sendgrid.net ~all
include:servers.mcsv.net
v=spf1 include:_spf.google.com include:mail.zendesk.com include:_spf.elasticemail.com ~all
A