You can simply enter email headers into the text box and then click on Analyze the Header Above. To make this process easier, you can use the Google Admin Toolbox Messageheader tool: The Google Admin Toolbox Messageheader tool Again, scroll to the bottom to see if there’s an authentication-fail message. If you’re using Outlook, you can view the headers by clicking on View Message Details in the top-right corner of an email. However, if you see DMARC Authentication-Results: fail, this means that the email failed the authentication process. In the above example, the email authentication passed. In the window that opens, you can view information about the original message, including whether it was a DMARC ‘pass’ or fail’: Viewing an original email header for a DMARC fail message Then select Show original: The ‘Show original’ option in Gmail Using Gmail as an example, to view the email headers, you can click on the three vertical dots next to Reply in the top-right corner of an email. They include things like the sender’s IP address, the date and time the email was sent, and other information. Checking the Email HeadersĮmail headers are the pieces of information that are added to an email when it’s sent. There are two main ways that you can check to see whether your email failed DMARC. How To Know Whether Your Email Failed DMARC As we mentioned, DMARC policy uses two TXT records: SPF and DKIM. TXT records are used to store text-based data in Domain Name Systems (DNSs). It’s also possible that the error is due to missing DNS TXT records. If it’s missing or invalid, it can result in the DMARC fail message. Missing DKIM signature: The DKIM signature is a digital signature used to verify that an email was sent from the domain it claims to be from.Improper DMARC alignment mode: The “From” addresses match, but DMARC is not configured correctly.DMARC alignment failure: The “From” address in the email doesn’t match the domain that’s sending the email, which can happen if you’re using a third-party email service like Gmail or Outlook to send email on behalf of your domain.However, there are other potential causes for DMARC failure, such as: As we mentioned earlier, the most common one is that the email was sent from a spoofed address. There are a few reasons an email might fail DMARC authentication. □ Learn how to fix the DMARC fail error here □ Click to Tweet Potential Causes for a DMARC Failure but your campaigns can’t be effective if your contacts aren’t receiving your messages. This can happen if your address is compromised in a data breach or if someone simply guesses your password. They can also be used to trick people into clicking on malicious links or opening attachments that could harm their computers.įorged emails can also occur if someone uses your email address without your permission. Spoofed emails are a major problem because they can be used to steal sensitive information or spread malware. This can happen for a number of reasons, but the most common cause is that the email was sent from a forged or spoofed IP address. When an email fails DMARC authentication, it means that the sender’s address does not match the purported sender’s domain. None: No action is taken, and the email is delivered to the recipient’s inbox. Quarantine: Emails are delivered to the spam folder.Reject: Emails are outright rejected and not delivered to the recipient.This process is used by most email marketing software and service providers.Ī DMARC policy is a set of rules that dictate how receivers should handle emails that fail DMARC authentication. Put simply, the DMARC fail error message means that your email failed the DMARC authentication process. DMARC helps ensure that the person sending messages from your email domain is valid and not actually a phisher or other type of scammer. Check Out Our Video Guide to Fixing the DMARC Fail Error An Introduction to DMARCĭomain-Based Message Authentication, Reporting & Conformance (DMARC) is a form of email authentication that adheres to Sender Policy Framework (SPF) and DomainKeys Identified Mail (DKIM) standards.
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