AUTHPROBLEM.comEmail Authentication Analysis
Privacy Policy
When you use this site, we process the information you submit, such as domain names, selectors, email-authentication details, contact-form content, and any email address or IP address supplied for a sender test. We also process basic technical data such as request time, source IP address, request identifiers, browser security signals, and lookup results so the service can operate, diagnose faults, prevent abuse, and produce operational reports.
Form submissions are checked using Cloudflare Turnstile for spam prevention. Contact form submissions are sent using the AuthSMTP email service provider. Those providers may process technical request data and message content as part of delivering, protecting, and securing the service.
We do not sell submitted lookup data or contact-form content. Information may be retained in service logs or email records for troubleshooting, abuse prevention, security, and operational monitoring, and may be shared where necessary with service providers or where required to investigate abuse or comply with legal obligations.
Anti-Spam Policy
This site is provided to help domain owners, administrators, and email senders diagnose SPF, DKIM, DMARC, and related DNS configuration. It must not be used to support spam, phishing, spoofing, unsolicited bulk email, credential harvesting, or any other abusive activity. Advertising, promoting, or linking to this site using unsolicited messages is specifically prohibited.
Contact forms are for genuine questions about these services and email-authentication issues. Unsolicited commercial messages, automated submissions, misleading content, or attempts to abuse the forms may be blocked, ignored, logged, or reported where appropriate.
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.