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
v=spf1 mx ip4:52.56.120.104/32 ip4:193.33.249.42/32 ip4:193.33.249.43/32 include:mail.zendesk.com ~all