SOA
Start of Authority
Primary NS
Mailbox
hostmaster.checkdomain.de
Serial
2026030909
Refresh
40000
Retry
7200
Expire
604800
Minimum TTL
300
TXT
TXT Records
v=spf1 include:_spf.checkdomain.de include:_spf.google.com ~all
v=spf1 include:secure-mailgate.com ?all