SOA
Start of Authority
Primary NS
Mailbox
hostmaster.1und1.com
Serial
2017060104
Refresh
28800
Retry
7200
Expire
604800
Minimum TTL
600
MX
Mail Exchangers
TXT
TXT Records
v=spf1 include:_spf.protonmail.ch mx ~all
protonmail-verification=3883b57fa706b488f361cd71764ab045ae28aec2
A