Registro DMARC
v=DMARC1; p=reject; rua=mailto:8idhoybh@ag.us.dmarcian.com,mailto:reports@dmarc.cyber.dhs.gov; ruf=mailto:8idhoybh@fr.us.dmarcian.com; fo=1;

Servidores DNS Principal (mname) y Secundario (rname)
host: genbank.com
class: IN
ttl: 21600
type: SOA
mname: dns1-ncbi.ncbi.nlm.nih.gov
rname: systems.web.ncbi.nlm.nih.gov
serial: 2026072000
refresh: 3600
retry: 600
expire: 2419200
minimum-ttl: 259200