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May 14, 2022 · 2 min read · We will go over how SPF works with subdomains in this article. How SPF policy discovery works As discussed in the How DMARC Works With Subdomains post, not all subdomains need to publish a DMARC record, if the organizational domain already has one. I...
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Apr 14, 2021 · 4 min read · When you use various online tools to check a domain's DMARC record, you might run into one of the errors: "No DMARC record found" "DMARC record not found" "Missing DMARC record" "Unable to find DMARC record" "No DMARC record published" "Hostname retu...
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Mar 25, 2021 · 3 min read · Can you have multiple SPF records on a single domain? The answer is no: a domain MUST NOT have multiple SPF records, otherwise SPF fails with PermError. An SPF record is a TXT record in the DNS starting exactly with "v=spf1", followed by an array of ...
Join discussionMar 13, 2021 · 15 min read · An SPF record is a TXT record published in the DNS by the domain owner, which specifies a whitelist of IP addresses allowed to send emails on behalf of the domain. When an email reaches the receiving server, the server will look up the SPF record in ...
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Mar 13, 2021 · 4 min read · When troubleshooting email delivery issues, you might run into some cryptic SPF error on the receiving email server along the lines of: SPF PermError: too many DNS lookups SPF Permanent Error: too many DNS lookups SPF Fail: too many DNS lookups These...
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