SOA
Start of Authority
Primary NS
Mailbox
awsdns-hostmaster.amazon.com
Serial
2019012101
Refresh
7200
Retry
900
Expire
1209600
Minimum TTL
86400
TXT
TXT Records
v=spf1 include:us._netblocks.mimecast.com ip4:12.229.146.34 ip4:68.250.141.38 ip4:68.250.141.59 include:spf.protection.outlook.com -all