Why does my email header show DKIM and SPF as none, and how do I fix Outlook deliverability issues?

Email marketer from Mailgun Blog shares that to improve deliverability to Outlook, ensure your sending domain is properly authenticated with SPF, DKIM, and DMARC. Additionally, monitor your sender reputation and avoid sending spam-like content.

Email marketer from EmailMarketingForum shares that the DKIM none could be caused by the DNS record not being properly propagated. Wait 24-48 hours after setting it up to confirm.

Email marketer from Reddit shares that if Outlook is blocking your emails, check if your IP address is on any blacklists. Use a tool like MXToolbox to check your IP against various blacklists, and request removal if you find yourself listed.

Email marketer from Gmass explains that to improve email deliverability to outlook, one must ensure the sending domain and IP have a good reputation. This can be achieved by authenticating your email with SPF, DKIM, and DMARC, as well as warming up your IP address.

Email marketer from Email on Acid shares that if you're facing deliverability issues with Outlook, it's important to focus on improving your sender reputation. You can do this by using a dedicated IP address, authenticating your email, and monitoring your bounce rates.

Email marketer from Stackoverflow shares that while a DKIM signature might validate (pass), it does not necessarily mean it's authenticating properly with DMARC if SPF is failing. This can still result in deliverability problems.

Marketer from Email Geeks explains that the original authentication results showing "none" might be due to Microsoft's internal processes and also observes that authentication results are passing. Additionally, they advise against using warming services, as they are not recommended and don't align with deliverability best practices.

Email marketer from SparkPost Blog explains that SPF failures often result from exceeding the DNS lookup limit, using too many 'include:' mechanisms, or not including the sending server's IP in the SPF record. Regularly review and optimize your SPF record to address these issues.

Email marketer from EasyDMARC Blog explains that seeing 'DKIM=none' or 'SPF=none' in email headers often points to missing or misconfigured authentication records in your DNS settings. This can significantly impact deliverability, especially with stricter requirements from email providers like Gmail and Yahoo.

Expert from Spam Resource explains that SPF failures (showing 'none') can be due to multiple issues, including exceeding the 10 DNS lookup limit, incorrect syntax in the SPF record, or the sending server's IP address not being authorized in the SPF record. Properly configuring and testing the SPF record is crucial.

Expert from Email Geeks suggests configuring DKIM and DMARC and shares links to directions and a testing tool.

Expert from Word to the Wise shares that a missing or misconfigured DMARC policy (related to DKIM/SPF showing none) can negatively impact deliverability, as it instructs receiving mail servers on how to handle emails that fail authentication checks. Implementing a strict DMARC policy can help improve deliverability but requires careful monitoring and adjustment.

Expert from Spam Resource says you must set up authentication on your sending domain correctly, and have reverse DNS set up on your sending IPs.

Documentation from Microsoft Learn explains that DKIM failures (showing as 'none') often stem from incorrect DNS configuration, particularly related to TXT records. Ensure the DKIM record is published correctly with the proper selector.

Documentation from DMARC.org explains that SPF failures leading to a 'none' result in headers usually indicate an issue with the SPF record's syntax or that the sending server's IP address isn't included in the allowed list of sending sources in the SPF record.

Documentation from Google Workspace Admin Help shares that deliverability issues to Outlook can arise if your domain's reputation is poor, your IP is blacklisted, or your email content is flagged as spam. Using Google Postmaster Tools can help diagnose these issues.

Documentation from RFC explains that SPF records must be syntactically correct. Common errors include incorrect use of mechanisms like 'a', 'mx', or 'ip4', missing or incorrect CIDR notation, and incorrect formatting of IP addresses. Validation tools can help identify these syntax issues.

Documentation from Postmark Support explains that the main SPF syntax errors include exceeding the 10 DNS lookup limit, incorrect use of modifiers, or having multiple SPF records. They recommend using a tool to check the validity.