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…
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…
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…
In today’s hyper-connected world, the internet has given billions of people an unprecedented ability to communicate, build relationships, and find companionship. While this transformation has many positive effects, it has also opened the door to new forms of scams and cybercriminal tactics — one of the most emotionally exploitative being the honey trap scam. At…
Start protecting your G Suite (Google Workspace) email from phishing by enabling DMARC in monitor mode (p=none), properly configuring SPF and DKIM, publishing a DMARC TXT record with aggregate/forensic reporting, and using DMARCReport to analyze alignment data and gradually move to quarantine/reject. DMARC (Domain-based Message Authentication, Reporting, and Conformance) lets you tell receiving mail servers…
Requiring a DKIM selector improves email security and deliverability by enforcing deterministic key selection and verifiable domain-level authentication that supports safe key rotation, isolates sending streams and third parties, strengthens DMARC alignment, and increases receiver trust—leading to fewer spoofing opportunities, lower verification failure rates, and better inbox placement. Context and background DomainKeys Identified Mail (DKIM)…
DKIM uses two keys to strengthen email authentication. If the same key were used to sign and verify emails, anyone could copy it and start sending fake messages. By separating the roles, DKIM ensures that: This is what prevents attackers from forging valid DKIM signatures. How DKIM Public and Private Keys Work Together Here’s how…
Small businesses face a harsh reality: 79% have experienced at least one cyberattack in the past five years. These numbers show why companies and organizations need better protection against various security vulnerabilities. The financial toll hits hard when security breaches occur. Small businesses lose up to $1,000 per minute of downtime, while enterprise organizations lose…
A business should use custom DKIM because it provides domain-aligned authentication that boosts deliverability and brand trust, satisfies DMARC enforcement requirements, reduces spoofing risk, and gives you operational control over keys, selectors, subdomains, and multi-ESP sending. Digital signatures are the backbone of modern email trust: DKIM (DomainKeys Identified Mail) lets receivers verify that your messages…
The most common signs that DKIM is not working for outgoing mail are a missing or malformed DKIM-Signature header, Authentication-Results showing dkim=none/fail/permerror/temperror (often with “body hash did not verify” for bh mismatches), DMARC aggregate/forensic reports flagging DKIM alignment failures, and MTA logs indicating signing was skipped or failed due to selector/key/DNS errors. Email authentication context…
