SOA
Start of Authority
Primary NS
Mailbox
director.opcion3.net
Serial
2020040100
Refresh
1800
Retry
900
Expire
604800
Minimum TTL
1200
NS
Nameservers
MX
Mail Exchangers
TXT
TXT Records
v=spf1 a mx ptr a:precoor.com ip4:65.254.63.131 mx:mail.precoor.com -all
A