brevo22.dkim.brevo.com has no MX records.
Question and response
Question
dig brevo22.dkim.brevo.com. MX
Answer
The response has no answer records.
Authority
brevo22.dkim.brevo.com. 3600 SOA ns1.sendinblue.com. hostmaster.brevo.com. 2025110802 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0