Question and response
Question
dig b1.metrocom-cr.dkim.brevo.com. NS
Answer
b1.metrocom-cr.dkim.brevo.com. 5 CNAME brevo21.dkim.brevo.com.
Authority
brevo21.dkim.brevo.com. 2355 SOA ns1.sendinblue.com. hostmaster.brevo.com. 2025050801 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0