This article explains how to test a domain for DNS configuration issues and mail server problems using a third-party lookup tool. This process helps determine whether the issue is related to DNS or the mail server provider.
When to Use This Article
- Email is not being delivered.
- Mail servers appear misconfigured.
- You need to determine whether the issue is DNS-related or mail server-related.
Steps to Test DNS and Mail Configuration
- Go to MXToolbox.
- Enter <domain.com> in the search field.
- Select MX Lookup.
- Click Find Problems.
- Review the results under both Mail Server and DNS.
- If errors appear under Mail Server, contact your mail server provider.
- If errors appear under DNS, contact your DNS provider.
Understanding the Results
- Mail Server Errors indicate issues with the mail host configuration, availability, or connectivity.
- DNS Errors indicate missing, incorrect, or misconfigured DNS records.
Verification
- Confirm that MX records are present and correctly formatted.
- Confirm no DNS-related errors are reported in the lookup tool.
- Retest after any configuration changes to validate resolution.