--- title: "Troubleshooting the ‘SPF alignment failed’ error for unaffected email authentication and delivery | AutoSPF" description: "When you create an SPF record, the most important step you perform is mentioning all the mail servers or IP addresses allowed to send emails as your brand’s." image: "https://autospf.com/og/blog/fixing-spf-alignment-failed-error-for-email-authentication-and-delivery.png" canonical: "https://autospf.com/blog/fixing-spf-alignment-failed-error-for-email-authentication-and-delivery/" --- Quick Answer When you create an SPF record, the most important step you perform is mentioning all the mail servers or IP addresses allowed to send emails as your brand’s representatives. So, when the domains in the ‘From’ address and the ‘Envelope From’ address, also known as ‘Return-Path;’ match, SPF alignment passes. 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So, when the domains in the ‘From’ address and [the ‘Envelope From’ address](https://www.etrn.com/support/spam-filtering-service/what-is-e-mail-envelope.html), also known as ‘Return-Path;’ match, SPF alignment passes. _In simpler words, SPF alignment means verifying that the sender’s IP address is officially authorized to be used for sending emails_. For a complete walkthrough of every SPF error type, see our [SPF Errors and Troubleshooting Guide](/blog/spf-errors-troubleshooting-guide/). So, if you receive a warning that your SPF alignment has failed, you can troubleshoot it by following the steps in this blog. ## What does SPF alignment mean? _SPF alignment is the comparison between the ‘envelope sender’ domain (the domain in the RFC5321.MailFrom address) and the ‘header sender’ domain (the domain in the [RFC5322.From address](https://dmarc.org/2016/07/how-many-from-addresses-are-there/)) of an email with the domain mentioned in the SPF record of the sender’s domain._ When both domains match, you get the ‘SPF pass’ result. [SPF](/blog/what-is-spf-email-a-guide-to-sender-validation-technology/) alignment also passes if there is a parent/ child domain match. This indicates that the sender is legitimate, and hence, emails sent by them land in the inboxes of the intended recipients. On the other hand, you get the ‘SPF fail’ result if these domains don’t match, indicating the possibility of a spoofed sender attempting to send [fraudulent emails](https://www.qlsproctor.com.au/2024/07/cyber-attacks-on-rise-via-fake-emails/) on your behalf. _SPF alignment is one component of [email authentication](/spf-too-many-dns-lookups/spf-lookup/) that ensures only genuine emails sent from your domain land in inboxes, reducing spam and [phishing attempts](https://www.bbc.com/news/articles/cp3371r7l1vo)_. ### Example: SPF in alignment ``` MAIL FROM: ``` ``` From: sam@mydomain.com ``` In this example, SPF is in alignment as RFC5321.MailFrom parameter and the RFC5322.From fields have identical DNS domains, i.e., mydomain.com. ### Example: SPF in alignment (parent) ``` MAIL FROM: ``` ``` From: sam@mydomain.com ``` In this example, since [sam@finance.mydomain.com](mailto:sam@finance.mydomain.com) is a [subdomain](https://en.wikipedia.org/wiki/Subdomain) of mydomain.com, SPF alignment passes because the sender’s subdomain is allowed by the SPF record of the parent domain (mydomain.com). _This alignment check helps ensure that emails are more likely to be genuine and not forged._ ### Example: SPF not in alignment ``` MAIL FROM: ``` ``` From: sam@mydomain.com ``` In this example, SPF is not in alignment as RFC5321.MailFrom parameter and the RFC5322.From fields don’t have identical DNS domains. ## Reasons for failed SPF alignment _The default SPF alignment mode is relaxed, but some domain owners prefer setting their SPF records to the strict mode._ The latter configuration triggers alignment failures if the ‘[Return-Path’ domain](https://bird.com/guides/return-path-explained) is the subdomain of the parent domain, while the From: header has the parent domain (like example 2). _This happens because for SPF to align in the strict mode, both the domains should be exactly the same. However, this isn’t necessary in the relaxed mode._ Another reason for failed SPF alignment is [domain spoofing](https://www.pcmag.com/news/nsa-warns-of-north-korean-hackers-spoofing-emails-from-legit-domains), which is an attempt by bad actors to [take over your identity](https://www.biometricupdate.com/202402/data-breach-identity-fraud-trends-reveal-deepfake-and-generative-ai-threats) by forging your domain name or address to send fraudulent emails on your behalf. So, if the From: domain is yours, but the Return-Path address is that of the spoofer, SPF alignment will fail for good. ![Spf record tester](https://media.mailhop.org/autospf/images/2024/07/spf-record-tester-8131.jpg) ## How Do You Fix the ‘SPF alignment failed’ error? Review your SPF record for alignment modes and other configurations. Ensure the settings align correctly with the domains used in your emails. Here’s what you need to check- ### 1\. Review your SPF record Give a thorough look at your SPF record and ensure it has all the legitimate sources that send emails from your domain, including those of [third-party vendors](https://panorays.com/blog/what-is-a-third-party-vendor/). _Also, if you send emails from subdomains, then ensure they are correctly included in the SPF record of the parent domain._ ### 2\. Identify the alignment issue Verify if the domain in the ‘Return-Path’ matches the domain allowed in the SPF record of the ‘From’ address domain. ### 3\. Configure SPF Mechanisms Use [SPF mechanisms](/spf-validator/spf-syntax/) (include:, a:, mx:, etc.) to specify which servers are allowed to send emails from your domain. For example: - include:\_spf.example.com (include another domain’s SPF record) - a:smtp.example.com (allow the [A record](https://www.domain.com/help/article/what-is-a-record) of smtp.example.com to send emails) - mx (allow the [MX records](https://en.wikipedia.org/wiki/MX%5Frecord) of the domain to send emails) ### 4\. Seek professional help Seeking professional help to manage SPF records can save time, reduce risks, and ensure that [email systems](https://cybersecuritynews.com/russian-spies-hacked-microsoft/) remain secure and effective. _Moreover, as your company grows, your email infrastructure will undergo changes and may also become too dynamic, requiring frequent changes and updates by professionals._ ![email infrastructure](https://media.mailhop.org/autospf/images/2024/07/spf-lookup.jpg) Managing SPF requires technical experts, and if you don’t have one onboard, then [get in touch with AutoSPF](/contact-us/). We help fix SPF issues, including dealing with the ‘[too many DNS lookups](/blog/solving-the-too-many-dns-lookup-error/)’ error. Our [SPF flattening](/) service ensures your SPF records are optimized and compliant. We will also help you integrate [DKIM](/10-reasons-for-regular-spf-record-checks-in-cybersecurity/dkim-record-check/) and [DMARC](/10-reasons-for-regular-spf-record-checks-in-cybersecurity/dmarc-record-check/) for your domain, as they can help overcome [SPF’s shortcomings](https://dzone.com/articles/demystifying-spf-record-limitations-strategies-for) and strengthen your email ecosystem. ## Topics [ email security ](/tags/email-security/)[ SPF error ](/tags/spf-error/)[ SPF record ](/tags/spf-record/) ![Brad Slavin](https://media.mailhop.org/autospf/images/authors/brad-slavin.jpg) [ Brad Slavin ](/authors/brad-slavin/) General Manager Founder and General Manager of DuoCircle. Product strategy and commercial lead for AutoSPF's 2,000+ customer base. [LinkedIn Profile →](https://www.linkedin.com/in/bradslavin) ## Ready to get started? Try AutoSPF free — no credit card required. [ Book a Demo ](/book-a-demo/) ## Related Articles [ Advanced 6m Solving the 'Too Many DNS Lookup' Error Jan 5, 2024 ](/blog/solving-the-too-many-dns-lookup-error/)[ Advanced 7m SPF Best Practices for Protection Against Email Spoofing and Phishing; A Guide for CISOs Mar 15, 2024 ](/blog/spf-best-practices-cisos-guide-to-email-security/)[ Advanced 8m What is the ‘554 5.7.5’ permanent error in DMARC and how to fix it? Jul 9, 2024 ](/blog/554-5-7-5-permanent-error-in-dmarc-and-how-to-fix-it/)[ Advanced 10m AutoSPF’s Guide to Configuring SPF & DKIM for Avanan: A Detailed Walk-through Nov 26, 2025 ](/blog/autospf-guide-configuring-spf-dkim-for-avanan-detailed-setup-walkthrough/) ```json {"@context":"https://schema.org","@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897474","name":"AutoSPF","url":"https://autospf.com","logo":{"@type":"ImageObject","url":"https://autospf.com/images/autospf-logo.png"},"description":"Automatic SPF flattening and email authentication management. 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Resolve SPF lookup limits, flatten SPF records, and maintain email deliverability across all your domains.","parentOrganization":{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138883901","name":"DuoCircle LLC","url":"https://www.duocircle.com","sameAs":["https://www.wikidata.org/wiki/Q138883901","https://www.crunchbase.com/organization/duocircle-llc","https://www.linkedin.com/company/duocircle","https://github.com/duocircle"],"subOrganization":[{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138898167","name":"DMARC Report","url":"https://dmarcreport.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897474","name":"AutoSPF","url":"https://autospf.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897912","name":"Phish Protection","url":"https://www.phishprotection.com"}]}}} ``` ```json {"@context":"https://schema.org","@type":"BlogPosting","headline":"Troubleshooting the ‘SPF alignment failed’ error for unaffected email authentication and delivery","description":"When you create an SPF record, the most important step you perform is mentioning all the mail servers or IP addresses allowed to send emails as your brand’s.","url":"https://autospf.com/blog/fixing-spf-alignment-failed-error-for-email-authentication-and-delivery/","datePublished":"2024-07-02T14:35:40.000Z","dateModified":"2026-04-18T02:36:41.000Z","dateCreated":"2024-07-02T14:35:40.000Z","author":{"@type":"Person","@id":"https://autospf.com/authors/brad-slavin/#person","name":"Brad Slavin","url":"https://autospf.com/authors/brad-slavin/","jobTitle":"General Manager","description":"Brad Slavin is the founder and General Manager of DuoCircle, the company behind AutoSPF, DMARC Report, Phish Protection, and Mailhop. 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