SOA
Start of Authority
Primary NS
Mailbox
hostmaster.serv557063.servidoresdns.net
Serial
2018013155
Refresh
21600
Retry
3600
Expire
2419200
Minimum TTL
60
NS
Nameservers
MX
Mail Exchangers
TXT
TXT Records
MS=ms53000853
v=spf1 include:spf.protection.outlook.com -all