SOA
Start of Authority
Primary NS
Mailbox
hostmaster.freie-informationssysteme.de
Serial
2021020101
Refresh
10800
Retry
3600
Expire
604800
Minimum TTL
86400
NS
Nameservers
MX
Mail Exchangers
TXT
TXT Records
v=spf1 a mx ptr include:spf-all.comtrance.de -all
A