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…
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…
This is the third edition of the month, and here are the top 4 cyber mishaps that you must know about. Last week, Marks & Spencer’s CTO quit following a major cyber mishap. There was bad news for both Fortinet and ChatGPT Health. However, amidst this bleak landscape, experts have found a silver lining: cyberattack…
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…
In today’s digital world, we rely on websites for everything — from banking and shopping to communicating with friends and accessing critical business resources. While the internet brings immense convenience, it also presents significant risks. Cybercriminals are constantly devising new ways totrick unsuspecting users into revealing sensitive information or compromising their devices.For this reason, it’s…
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 continues to be one of the most widely used communication channels for businesses, consumers, and service providers worldwide. However, its widespread use has also made it a prime target for abuse. Phishing, spoofing, and impersonation attacks have increased dramatically, causing significant financial losses and eroding trust in email communication. To counter these threats, major…
To perform a DKIM lookup for your domain and verify email authentication, extract the DKIM selector from a signed message’s header, build the DNS name as selector._domainkey.yourdomain, query its TXT record with dig/nslookup (or an API), interpret the key tags, and optionally validate a message’s DKIM-Signature against that published public key. Context and background DKIM…
If you run a website based on WordPress and rely on it to send emails — user sign-up confirmations, notifications, password resets, newsletters, or contact-form replies — then you probably know how finicky email deliverability can be. Out-of-the-box WordPress typically uses the PHP mail() function, which often results in un-authenticated emails that get flagged as…
The third edition of the month revolves around key cybersecurity incidents. Cyber mishaps this week include a breach of Facebook login credentials, phishing attacks that exploit email routing gaps, fake Instagram password reset emails that sent a panic wave among the Indian user base, and a customer data breach at Betterment. Facebook login credentials accessed…
