Expert guides on SPF, DKIM, DMARC, and email security.
Learn how to set up SPF records for Google Workspace - from the baseline include:_spf.google.com record to mapping third-party senders, managing DNS permissions, and avoiding the 10-lookup limit.
Comparing Valimail Instant SPF against AutoSPF, PowerDMARC, Redsift, DMARCLY, EasyDMARC, and MxToolbox. Feature comparison for teams evaluating Valimail alternatives.
Comparing DMARCLY Safe SPF against AutoSPF, PowerDMARC, EasyDMARC, dmarcian, Redsift, and Valimail. Feature comparison with honest pricing and use-case guidance.
Cybersecurity rules in the EU are getting stricter, and businesses can no longer treat them as optional.
Comparing EasyDMARC against AutoSPF, PowerDMARC, DMARCLY, dmarcian, Redsift OnDMARC, and Valimail for SPF and DMARC management. Feature comparison with honest use-case guidance.
To create an SPF record that consistently passes Kitterman SPF validation, you must adhere strictly to RFC 7208 syntax (one TXT record starting with v=spf1).
MSSPs often manage dozens or even hundreds of client domains, each with its own SPF configuration. Handling this manually can quickly become overwhelming.
Comparing PowerDMARC PowerSPF against AutoSPF, MxToolbox, DMARCLY Safe SPF, Redsift Dynamic SPF, and Valimail Instant SPF for managing the 10-DNS-lookup limit. Honest feature comparison with pricing and use-case guidance.
Yes - an SPF validator frequently uncovers hidden errors (lookup-limit breaches, missing or mistyped includes, misordered mechanisms, permissive all.
Getting emails into the inbox is not just about writing a good message; it’s about proving, again and again, that your emails deserve to be there.
A side-by-side comparison of the 8 best free SPF record checker tools in 2026 - AutoSPF, MxToolbox, dmarcian, EasyDMARC, DMARCLY, PowerDMARC, Mailtrap, and DNS Checker. Each tool tested against the same domain with real results.
Copy-paste SPF TXT records for the 10 most common email vendor combinations. Each example shows the exact DNS record, the lookup count, and what to watch out for.
The most common SPF checker finding that indicates misconfigured include statements is that the included domain publishes no SPF record (e.g., include:vendor.
HIPAA compliance means protecting sensitive patient data, also called protected health information or PHI.
SPF record testers are valuable diagnostics but they can mislead you because they may not fully enforce the 10-DNS-lookup limit (especially with nested.
RFC stands for Request for Comments, a series of documents used by the Internet community to publish technical guidelines, protocols.
An SPF record tester matters because it verifies your DNS-published sender authorizations end-to-end.
If an SPF checker shows multiple include mechanisms, interpret each as a delegated check of another domain’s SPF that is evaluated left-to-right for the same.
Email ecosystems these days are no longer limited to only a couple of email servers.
The best practices to avoid SPF DNS lookup limits are to use only necessary lookup‑triggering mechanisms, prefer ip4/ip6 literals and CIDR ranges.
Back in 2017, when the web wasn’t as structured as it is today from a security standpoint.
You can interpret SPF lookup results to find configuration errors by parsing the record’s mechanisms and qualifiers in order.
It’s 2026, and companies no longer use traditional on-premise email servers; they have now moved to cloud platforms like Microsoft 365 and Google Workspace.
To protect your domain from SPF permerror issues, enforce strict syntax validation.
In 2026, the best practices for secure SPF lookups are to keep SPF within the 10-DNS-lookup limit by optimizing and (selectively) flattening includes.
From hard bounces to silent drops, email delivery fails for many reasons. Learn the most common causes and how to fix email deliverability in 2026.
An SPF record generator should enforce RFC 7208-compliant syntax and semantics; cap and flatten DNS lookups to stay under the 10-lookup limit; manage record.
For an email to reach the recipient, it must meet the specific requirements set by the receiving server, which govern address syntax, authentication.
The best practices an SPF checker should recommend are to keep records within the 10-lookup and size limits.
Google’s SPF checker most often reports “no SPF record” when the domain publishes only the deprecated SPF resource record (not a TXT).
Give us a test drive for 30 days at no cost. Fix your broken SPF in less than 60 seconds!