A DKIM DNS record protects your domain from email spoofing by publishing a public key (under a selector) that receivers use to verify the cryptographic signature in your email’s DKIM-Signature header, proving the message was authorized by your domain, detecting tampering, and enabling DMARC alignment so unauthenticated spoofs can be quarantined or rejected. DKIM (DomainKeys…
Email is one of the most transformative technologies in the history of digital communication. Although it may seem like a mundane tool you use every day to send messages, share files, or coordinate with teams, email’s evolution is a remarkable journey that spans decades of innovation, expansion, and adaptation. Today, more than 300 billion emails…
DKIM verification protects email by cryptographically validating that selected headers and the body were unaltered and bound to the domain in the d= tag, while SPF only checks whether the sending IP is authorized for the envelope domain and DMARC enforces policy by requiring domain alignment of a passing DKIM or SPF result with the…
The DKIM selector (s=) is the label that tells verifiers which specific public key to fetch at selector._domainkey.d=domain, while the DKIM domain (d=) names the signing domain that owns the key in DNS and is the value used for DMARC alignment—verification always looks up s= under d=, but only d= participates in alignment. Context and…
The DNS providers that make it easiest to add a DMARC record are Cloudflare and DNSimple for overall usability, cPanel/Plesk-based hosts for true guided “wizards,” and AWS Route 53 for programmatic workflows—while Google Cloud DNS, Azure DNS, NS1 Connect, DigitalOcean, GoDaddy, Namecheap, Gandi, Porkbun, and Hetzner also work well but typically require more manual steps….
The first edition of February revolves mainly around phishing attacks. While a new type of phishing campaign is doing the rounds that involves targeting PDFs and Dropbox, notorious cyber gang ShinyHunters seemed to have bypassed MFA in their latest cyberattack. Meanwhile, multiple journalists are being targeted by misusing the Signal messenger. An Indian firm fell…
Email marketing continues to be one of the most effective digital communication channels for businesses worldwide. Platforms such as Mailchimp simplify campaign creation and audience engagement, but successful email delivery depends heavily on proper authentication. Without it, even legitimate emails risk being flagged as spam or rejected entirely. At DMARCReport, we work closely with organizations…
If you run an e-commerce business, email is not just a marketing channel. It is your order confirmation system, your password reset mechanism, your customer support line, and often your main revenue driver. Platforms such as WooCommerce, Shopify, Magento, BigCommerce, and PrestaShop rely heavily on transactional and marketing emails to operate smoothly. Now imagine those…
DMARC aggregate reports most commonly reveal SPF and DKIM authentication and alignment failures, unauthorized/forged senders, misconfigured internal or third‑party systems, and configuration pitfalls (SPF include limits, missing/rotated DKIM selectors, forwarding/mailing list artifacts, subdomain policy mismatches), and you should prioritize remediation in this order: 1) high‑volume spoofing that fails both SPF and DKIM, 2) legitimate business‑critical…
In today’s digital world, protecting your domain from spoofing, phishing, and misuse isn’t just a best practice — it’s essential. As email continues to be one of the primary channels for business communication, ensuring that your domain adheres to robust email authentication standards is crucial to maintaining deliverability, protecting brand reputation, and safeguarding your customers….
Common signs your domain has no DMARC record published include DNS queries for _dmarc.yourdomain returning NXDOMAIN or “no TXT answer,” missing or “DMARC not evaluated” entries in Authentication-Results headers, zero DMARC aggregate/forensic reports in your monitoring, no DMARC-related enforcement bounces or provider warnings, and consistent checks across all authoritative name servers and subdomains showing no…
Publish your DMARC record as a DNS TXT record at the host _dmarc.yourdomain (for example, _dmarc.example.com) in your authoritative DNS, and optionally at _dmarc.sub.yourdomain for subdomains you want to override—never at the bare apex without the _dmarc label and never as SPF/DKIM records. DMARC (Domain-based Message Authentication, Reporting, and Conformance) relies on a deterministic DNS…
In today’s connected world, cyber threats rarely knock before entering. Suspicious links — whether delivered through email, messaging apps, or social media — are among the most common dangers individuals and organizations face online. Clicking a malicious link can compromise sensitive data, install malware, undermine security systems, or open the door to phishing campaigns. At…
You do not need to be famous, controversial, or wealthy to become a target of doxxing. In many cases, victims are regular people who simply posted something online, joined a debate, or annoyed the wrong person. A single comment, tweet, or review can be enough to trigger someone into digging through your digital life. What…
The most common mistakes when setting up DKIM TXT records are syntax errors (quoting/semicolons/base64), selector/domain mismatches, incorrect key splitting or record type, weak or outdated keys and unsafe rotation, DNS propagation/TTL missteps, canonicalization/algorithm mismatches, and ignoring DMARC/SPF alignment requirements. DKIM (DomainKeys Identified Mail) uses a public key published in DNS to verify that a message’s…
To set up DMARCReport Free (DMARC Analyzer) and start receiving reports, publish a DMARC TXT record at _dmarc.yourdomain (for example.com → host: _dmarc.example.com, type: TXT, value: v=DMARC1; p=none; rua=mailto:[your-unique-address]@agg.dmarcreport.example; ruf=mailto:[optional]@forensics.dmarcreport.example; fo=1; adkim=r; aspf=r; sp=none; ri=86400; pct=100), verify your domain in the DMARCReport dashboard, confirm SPF and DKIM are correctly aligned for your mail flows, and…
