SOA
Start of Authority
Primary NS
Mailbox
hostmaster.1und1.com
Serial
2017060140
Refresh
28800
Retry
7200
Expire
604800
Minimum TTL
600
NS
Nameservers
MX
Mail Exchangers
TXT
TXT Records
MS=ms13498146
duo_sso_verification=uSAwSvI2WfMbg9OkjZhNzbcNYF6NVeRlcPysTMDY77X8ijm4hnbeYPSZp9V7cm2m
v=spf1 ip4:131.226.23.13 include:spf.protection.outlook.com -all
A