Fifty years after its invention and 30 years after its use became widespread, email remains an indispensable tool for communication. According to recent research, more than 350 billion email messages are sent every day—that’s nearly 40 per person, per day, for all 8 billion people on the planet.
However, the widespread use of email also makes this form of communication a prime target for cybercriminals seeking to exploit vulnerabilities for malicious purposes. Email inboxes contain so much sensitive information that they’ve become prime threat vectors for phishing attacks, ransomware infections, malware distribution, and data breaches.
That’s why email security is so essential. Its effectiveness, however, can vary widely—especially depending on the type of email service you use. And when the conversation about email security progresses from practical application to technical strategy, it can become one of the most complex issues in the IT landscape.
How does email security work?
Email security encompasses a wide range of technologies and protocols designed to protect the integrity, confidentiality, and authenticity of communications. Two key components are DKIM (Domain-Keys Identified Mail) and DMARC (Domain-based Message Authentication, Reporting, and Conformance).
DKIM is a digital signature mechanism that allows an organization to cryptographically sign outgoing emails, verifying their authenticity and ensuring that they haven’t been tampered with during transit. Email servers of message recipients can then use this signature to verify the sender’s domain and detect any attempts at email spoofing or phishing.
DMARC adds another layer of security on top of DKIM by providing email authentication and reporting capabilities. It enables domain owners to specify how their emails should be handled by recipient servers, including policies for email authentication failures and reporting mechanisms to monitor email activity and potential abuse.
What does that mean for everyday email users?
DKIM and DMARC work hand in hand with spam filters and reputation-based scoring systems to scan email content, check attachments, verify links, and block suspicious messages. This gives regular email users the peace of mind that the messages that land in their inboxes are actually safe.
The flip side to these enhanced security layers, however, is that DKIM and DMARC vary by email provider, industry, and organization. That means, depending on the settings of the recipient and the sender and the rules implemented by their respective email servers, a trusted message that gets delivered to one person’s inbox may get quarantined by another person’s inbox.
Sensitive industries like healthcare and finance may also employ even more stringent filtering, resulting in legitimate emails being erroneously blocked or marked as suspicious if certain language is used or safety concerns are flagged by automated email filters. For users and businesses struggling to navigate the complexities of DKIM and DMARC, a trusted IT advisor like CMIT Solutions can provide invaluable expertise.
Combine that with proactive threat mitigation and ongoing email support and businesses can turn a confusing situation into a competitive advantage. Here’s how it works:
Email protection is a fundamental aspect of modern cybersecurity, offering essential protection against a wide range of risks. This is a critical layer of security against bad actors seeking to exploit email vulnerabilities for financial gain, data theft, or disruption of operations.
By translating complex technologies like DKIM and DMARC into actionable security steps, a trusted IT provider like CMIT Solutions can enhance the privacy and reliability of email communications.
Our 250+ offices and 800+ technicians located across North America offer ongoing support and proactive monitoring for every type of email system. From educating your team to implementing advanced security features, we can safeguard your business communications and set you up for ongoing success.
Want to better understand DKIM and DMARC while strengthening your sense of digital security? Contact us today.
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