Blogs
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DMARC
Why Your Email Gets Rejected After Moving to DMARC p=reject When Using Proofpoint
Third-party email security gateways like Proofpoint break DMARC alignment by relaying mail from their own servers, causing legitimate outbound mail to be rejected when DMARC is set to p=reject.
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DMARC
Why Finding a Domain Abuse Contact Feels Like Forensic Archaeology - And How to Do It Better
When you need to report phishing or email abuse, the hardest part is finding the right contact. Here is why existing methods fail and a better workflow that uses DMARC reports to identify senders first.
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DMARC
Why Email Authentication Passing Does Not Mean the Sender Is Safe
Email authentication (SPF, DKIM, DMARC) proves a sender is authorized to use a domain. It does not prove the message is trustworthy. Here is what the difference means for your security posture.
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Deliverability
Chat-Based DNS Change Approvals Are a Security Risk
Approving DNS changes over Slack or Teams is common but risky. Here is what can go wrong, what a secure approval workflow needs, and how to detect problems when they happen anyway.
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DMARC
Why Exchange Online Shared Mailboxes Fail DMARC When p=reject Is Enabled
Exchange Online shared mailboxes send through M365 infrastructure, causing DMARC alignment failures when p=reject is enforced. Here is the root cause and how to fix it.
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DMARC
Why Third-Party Senders Break DMARC and How to Fix Subdomain Delegation
Third-party senders (CRM, marketing, billing) often break DMARC because they send from their own servers using your From domain. This guide explains why it happens and how to fix it using subdomain delegation.
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DMARC
Why Your Own DMARC Monitoring Missed That Your Domain Was About to Be Rejected
A real near-miss reveals why DMARC monitoring setups still miss the signals that predict mail rejection, even when reports are configured.
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DMARC
Why a Passing DMARC Record Does Not Mean Your Email Is Secure
DMARC pass only proves a sender was allowed to use a domain name. It does not prove the message is legitimate, the sender's account is uncompromised, or the content is safe.
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DMARC
Can someone spoof my email address even with DMARC?
DMARC stops direct domain spoofing but has a specific blind spot: forwarded mail and mailing lists that re-envelope the message. Here is exactly what it can and cannot catch.
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DMARC
Why a Passing DMARC Record Does Not Mean Your Email Is Safe
DMARC pass only tells you the sender was authorized to use that domain name. It says nothing about whether the message is legitimate, the account is uncompromised, or the content is safe. Here is what DMARC actually guarantees.