DNS & Email Trust
low Severity
Free Check
Mail Server (MX) Security Records
Inspects MX records to ensure valid mail routing configuration and detect dormant or dangling mail server pointers.
Why It Matters
Misconfigured MX records cause business email outages or permit attackers to register expired mail relay domains.
How We Check This
We resolve DNS MX records and verify that each mail exchange host resolves to active IP addresses.
How to Fix & Implement
Copy-paste configuration blocks tailored for your web server or edge proxy.
nginx snippet
# Configure valid MX records pointing to your email service provider
Frequently Asked Questions
What if our domain does not send or receive email?
Publish a null MX record (".") and SPF "v=spf1 -all" to block all email impersonation.