SOA
Start of Authority
Primary NS
Mailbox
domain.rolmail.net
Serial
2019111100
Refresh
3600
Retry
3600
Expire
604800
Minimum TTL
86400
NS
Nameservers
MX
Mail Exchangers
TXT
TXT Records
v=spf1 mx include:spf.lts.it include:spf.newsletter.trick17.it ?all