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syntax errors (quoting/semicolons/base64), selector/domain mismatches, incorrect key splitting or record type, weak or outdated keys and unsafe rotation, DNS propagation/TTL missteps, canonicalization/algorithm mismatches, and ignoring DMARC/SPF alignment requirements.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…
Sending bulk emails certainly means reaching a wider audience, but what if your emails fail to even reach the recipients? Such problems often occur even when you believe you are doing everything right. The reason for this error could be hidden email-policy checks running in the background that are causing your emails to fail and…
Every day, millions of people and businesses around the world fall prey to phishing attacks — fraudulent schemes designed to trick users into revealing sensitive data like passwords, financial information, or proprietary business credentials. At DMARCReport, we understand the danger these threats pose, and we want to give you a complete picture of how phishing…
You generate DMARC aggregate reports for G Suite (Google Workspace) by publishing a DMARC DNS TXT record that includes a valid rua=mailto: address for report collection, and you interpret them by parsing the XML fields (source_ip, count, policy_evaluated, dkim/spf alignment, disposition, reason) to map sending sources and authentication outcomes—best done with a purpose-built analyzer like…
Emails were never designed with security in mind, which is precisely why they require cautious use and integration with third-party tools. Email analysis is a practical approach that checks email authentication results, sender identity, routing paths, and attachments to ensure the message is safe to open and engage with. You can manually analyze emails for…
In today’s digital world, email remains one of the most essential communication channels for organizations of all sizes — from multinational brands to local businesses. Yet while email offers immense marketing and operational value, it also brings challenges. One of the biggest barriers to success isn’t just sending email — it’s getting it into the…
Email is still the backbone of business communication—but only when your messages actually reach the inbox. If you’re using Zoho Mail and struggling with low open rates, emails landing in spam, or warnings about authentication, SPF and DKIM are not optional anymore—they’re essential. At DMARCReport, we work with organizations every day to fix email deliverability…
