As DNS users, domain administrators, and website operators know all too well: DNS configuration often feels like walking a tightrope. A small misconfiguration can mean your users can’t reach your site — or your email goes missing. Two DNS record types that are often sources of confusion are CNAME and ALIAS records. They can look…
By DMARCReport When you register a domain name — say mywebsite.com — you’re not done yet. To get the domain to actually load your website, or allow email to be delivered, you need to configure the Domain Name System (DNS) appropriately. Think of DNS as the internet’s “phone book.” Instead of human-readable domain names, computers…
Implement DMARC for multiple domains and subdomains by standardizing a DNS template (SPF, DKIM, DMARC), inventorying all sending services, using parent-level inheritance with the DMARC sp tag where appropriate, centralizing rua/ruf reporting, rolling out p=none then gradually enforcing per domain (quarantine → reject) based on report-driven confidence, automating DNS and DKIM key management via APIs/IaC,…
Introduction At DMARCReport, we’ve always believed that email authentication and brand trust should go hand in hand. That’s why the recent update from Google — enabling support for Common Mark Certificate (CMC) under Brand Indicators for Message Identification (BIMI) — is big news for businesses of all sizes. If you’re sending emails to clients, subscribers…
If you run a small business, email marketing is one of the easiest ways to stay in touch with your customers, promote offers, and grow sales. But building and maintaining your own email system takes time and technical know-how. And most founders simply don’t have that. Luckily, third-party email services can help. Platforms like Mailchimp…
You can use a DMARC Analyzer—specifically DMARCReport—by publishing a DMARC record that sends RUA/RUF reports to DMARCReport, then using its dashboard, alignment checks, alerts, and policy controls to identify spoofing sources quickly and move from monitoring (p=none) to enforcement (quarantine/reject). Context and background Email domain spoofing happens when attackers send messages with your domain in…
When managing a domain, one of the choices you’ll face is how to configure your DNS (Domain Name System) records. Two of the most important and commonly confused record types are A records and Alias records. Though they may seem similar, they behave differently — and choosing the right one can make a big difference…
The best tools for bulk DMARC lookup across hundreds of domains are a mix of commercial SaaS platforms (e.g., DMARC Report, dmarcian, EasyDMARC, PowerDMARC, Valimail Monitor, MXToolbox, WhoisXML API) and high-performance open-source utilities (e.g., massdns, ZDNS, ProjectDiscovery dnsx) combined with scripting libraries (Python dnspython, Go miekg/dns) for automation and validation at scale. Bulk DMARC lookup…
As cyber threats escalate in frequency and sophistication, companies can no longer treat security as an afterthought. A robust cybersecurity posture demands proactive measures, and one of the most powerful among them is penetration testing. In this article, DMARCReport walks you through how penetration testing can significantly bolster your defenses — as well as the…
In our recent webinar titled “From Setup to Success: Secure Your Emails with DMARCReport,” we explored essential aspects of email security, with a deep dive into authentication protocols and best practices. The session was rich in content and attracted many participants; yet, we couldn’t cover all questions during the live Q&A. In this post, DMARCReport…
Email spoofing remains one of the common tricks used to impersonate trusted senders, targeting iCloud users. In a situation where custom domains connected to Apple Mail remain unauthenticated, an attacker can send a fraudulent message that appears legitimate at the same time as a user’s authenticated session. This poses a risk of data exposure, combined…
For small businesses with minimal IT staff, the best DMARC record generators are GUI-based wizards—especially DMARC Report’s DMARC Wizard—alongside dmarcian, EasyDMARC, PowerDMARC, MXToolbox, and Google Admin Toolbox, because they combine pre-validated records, SPF/DKIM alignment guidance, and optional one‑click DNS publishing to minimize setup time and errors. Getting DMARC right delivers immediate value—stopping spoofing/phishing and improving…
At DMARCReport, we take email and network security seriously. While our primary focus is on DMARC, SPF, and DKIM, we also understand the broader threat landscape — including Distributed Denial-of-Service (DDoS) attacks. In this comprehensive guide, we walk you through the 12 most common types of DDoS attacks, their underlying mechanisms, and why understanding them…
As DMARCReport, we closely monitor threat trends that directly impact email security — especially those that exploit human behavior, credential theft, and social engineering. Verizon’s 2021 Data Breach Investigations Report (DBIR) provides a wealth of insights, many of which align closely with the risks we help our clients mitigate. Below are ten key takeaways, along…
Email is a big part of how businesses talk and share information today. But because everyone uses it so much, it has also become a major weak spot. One smart phishing attack can cost a company money and damage its reputation in seconds. Basic email filters are no longer enough to catch these fake messages….
