DNS & Email Trust
low Severity
Free Check
SMTP TLS Reporting (TLS-RPT)
Checks for _smtp._tls TXT records (RFC 8460) to receive automated notifications regarding email delivery TLS failures.
Why It Matters
Enables mail administrators to detect when attackers or network faults are causing SMTP TLS downgrade failures.
How We Check This
We query DNS for _smtp._tls.yourdomain.com TXT records for v=TLSRPTv1.
How to Fix & Implement
Copy-paste configuration blocks tailored for your web server or edge proxy.
nginx snippet
# DNS TXT at _smtp._tls.yourdomain.com: v=TLSRPTv1; rua=mailto:tls-reports@yourdomain.com
Frequently Asked Questions
Does TLS-RPT block delivery?
No, TLS-RPT is purely an automated reporting mechanism.