AUTHPROBLEM.comEmail Authentication Analysis

Validation and Liability

This combined checker reviews SPF, DKIM, and DMARC DNS configuration together so obvious alignment and rollout problems can be seen in one place. It is still a DNS-based analysis rather than a live message-authentication result.

The combined view cannot know every sender, forwarding path, third-party platform, DKIM signing selector, or mailbox-provider decision. Use it as a structured starting point before validating with real mail and provider logs.

Before making SPF, DKIM, or DMARC changes, confirm which systems send mail for the domain, verify DKIM selectors with each platform, review DMARC reports where available, and obtain administrator approval.

A change that looks correct in isolation can still break delivery if SPF, DKIM, and DMARC alignment are not considered together.

We aim to keep the site accurate and available, but we do not guarantee uninterrupted access, error-free operation, or compatibility across every browser and device at all times.

Use of this site is at your own discretion and risk. External services used by the site, including security or email providers, may affect availability or functionality from time to time.