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…
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syntax errors (quoting/semicolons/base64), selector/domain mismatches, incorrect key splitting or record type, weak or outdated keys and unsafe rotation, DNS propagation/TTL missteps, canonicalization/algorithm mismatches, and ignoring DMARC/SPF alignment requirements.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…
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…
In today’s digital world, websites and email domains rely on the Domain Name System (DNS) to connect infrastructure, prove ownership, and secure communications. One of the most versatile tools in the DNS toolbox is the TXT record — a simple yet powerful type of DNS entry that carries text information used for domain verification, email…
Run continuous, automated DKIM monitoring with real‑time alerts at all times, run scheduled DKIM spot tests daily for high‑volume/frequently changing senders and weekly for stable low‑volume programs, and always test immediately before and after DNS/MTA changes and key rotations (hourly during active incidents). DKIM (DomainKeys Identified Mail) is a cryptographic signature that tells receiving servers…
Email authentication is more than just a best practice — it’s essential. As email threats continue to rise, weak authentication leaves your domain vulnerable to spoofing, phishing, and reputation damage. At DMARCReport, we believe every mail server owner should feel empowered to secure their infrastructure. One of the most impactful steps you can take is…
If your email domain has no DMARC record, attackers can freely spoof your domain to deliver convincing phishing and business email compromise (BEC), receiving servers won’t enforce a clear disposition for unauthenticated mail, you’ll have no visibility into abuse via DMARC reports, and your deliverability and brand reputation will degrade—especially with mailbox providers that now…
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)…
Email remains one of the most ubiquitous forms of communication in both personal and professional settings. It’s fast, familiar, and powerful — but it’s also one of the most abused tools in a cybercriminal’s arsenal. From targeted phishing attempts and social engineering schemes to broader spoofing campaigns, malicious actors constantly exploit email vulnerabilities to achieve…
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…
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…
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…
