SOA
Start of Authority
Primary NS
Mailbox
hostmaster.markmonitor.com
Serial
2021060101
Refresh
86400
Retry
3600
Expire
2592000
Minimum TTL
172800
NS
Nameservers
MX
Mail Exchangers
TXT
TXT Records
v=spf1 include:spf.protection.outlook.com include:guestline.net include:roomlynx.net -all
A