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Category: Blog

Understanding DMARC Reject Policy: What Happens When Messages Fail Authentication?

Posted on April 16, 2024 by Bruce Jingleson

Overview DMARC (Domain-based Message Authentication, Reporting, and Conformance) is a foundational protocol in modern email security that provides best in breed protection against email spoofing and phishing attacks.  Domain owners

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Blog, SPF, DKIM, DMARC DMARC, DMARC Failure Notices, DMARC quarantine, DMARC reject

Google’s SPF 10 Lookup Limit: What It Means for Your Email Deliverability

Posted on March 1, 2024 by Bruce Jingleson

  Background In this post we provide an overview of the Sender Policy Framework and Error Conditions with a focus on Google’s enforcement of the SPF 10 Lookup Limit.  You

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Blog, SPF, DKIM, DMARC

Navigating the SPF 10 Lookup Limit: Helping Your Emails Reach Their Destination

Posted on February 27, 2024 by Bruce Jingleson

    In the complex world of email delivery and security, the Sender Policy Framework (SPF) stands as a critical line of defense against email spoofing. By allowing domain owners

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Blog, SPF, SPF, DKIM, DMARC

Updated Gmail and Yahoo Sender Requirements

Posted on February 8, 2024 by Bruce Jingleson

Updated Sender Requirements Starting February 2024, Gmail and Yahoo began enforcing more stringent requirements for senders to authenticate outgoing email.  This includes publishing well formatted and maintained SPF, DKIM, and

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Blog, SPF, SPF, DKIM, DMARC

Top 5 SPF Configuration Errors

Posted on February 5, 2024 by Bruce Jingleson

Over the last few years, spfXio.com has analyzed and monitored email security configurations for over 40,000 domains.  Our evaluation uses information publicly available through the Domain Name System (DNS) with

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Blog, SPF, DKIM, DMARC Domain Control Index, SPF

Enable DMARC Aligned DKIM Signatures in MS365

Posted on March 9, 2023 by Bruce Jingleson

Enabling DMARC aligned DKIM signatures in Microsoft 365 for your custom domain is easy!  DMARC aligned DKIM signatures allow receiving domains to authenticate emails sent from your domain in a

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Blog, SPF, DKIM, DMARC

SPF Flattening is BAD!

Posted on October 28, 2022 by Bruce Jingleson

Are you struggling with your SPF record, seeing increased volumes of email land in SPAM, or challenged with improving your DMARC Policies?  Request your free analysis from our Domain Inspector

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Blog, SPF, SPF, DKIM, DMARC Macro-Based Dynamic Record Reference, SPF, SPF 10 Lookup Limit, SPF Flattening

Enforce DMARC reject Policies in O365

Posted on March 9, 2022 by Bruce Jingleson

Office365 is an incredibly sophisticated business platform offering powerful capabilities supporting the needs of today’s mobile workforce with minimal investment and run cost.  As is common with any software subscription

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Blog, SPF, DKIM, DMARC DMARC, O365
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