Moletools

Email Domain Health Check

Enter a domain to audit the DNS records that control email delivery, authentication, and transport security.

DKIM selectors are chosen by your mail provider and cannot be discovered reliably from DNS alone. Leave this blank to skip DKIM.

This tool queries public DNS only. It does not connect to your mail server or send email. Results are cached for up to 10 minutes.

Frequently asked questions

What does this check test?
It reads public DNS records used for mail reception, sender authorization, domain alignment, transport security reporting, and brand indicators.
Why do I need to enter a DKIM selector?
A domain can have many selector names and DNS does not provide an index of them. Your email provider or a DKIM-Signature header shows the selector after s=.
Does a healthy report guarantee inbox delivery?
No. DNS configuration is only part of deliverability. Sender reputation, message content, complaint rates, list quality, and each mailbox provider's policy also matter.