Your business domain is more than just your website address. It’s also a key part of your brand identity, particularly when it comes to email communication with customers, suppliers and partners.
But did you know that without the right email security records in place, someone could potentially send emails that appear to come from your business, even when they don’t?
At Sympley, we believe domain protection & monitoring should be an important part of maintaining a secure and trustworthy online presence. Two of the most important technologies involved are DMARC and DKIM.
Here’s what they do, why they matter and what could happen if your domain isn’t properly protected.
What Is a DKIM Record?
DKIM stands for DomainKeys Identified Mail. It’s an email authentication technology that helps receiving mail servers verify that an email has been authorised by the sending domain and hasn’t been altered during delivery.
DKIM works by adding a digital signature to outgoing emails. The receiving server checks this signature against a public key published in your domain’s DNS records.
When configured correctly, DKIM helps establish trust in your outgoing emails and reduces the risk of email tampering.
However, DKIM alone isn’t enough to prevent someone from impersonating your domain. That’s where DMARC comes in.
What Is a DMARC Record?
DMARC stands for Domain-based Message Authentication, Reporting and Conformance.
It’s a DNS-based email security policy that tells receiving mail servers how to handle messages that fail authentication checks.
DMARC works alongside DKIM and SPF (Sender Policy Framework), another authentication method that identifies which servers are authorised to send emails for your domain.
Importantly, DMARC also checks whether the authenticated domain matches the domain shown in the email’s visible From address.
This helps protect businesses against email spoofing, where attackers attempt to make fraudulent emails appear as though they’ve come from a legitimate business.
Understanding DMARC Policies: p=none, p=quarantine and p=reject
When configuring DMARC, there are three main policy options.
p=none
Monitoring Only
Emails that fail DMARC aren’t blocked or quarantined because of this policy. Instead, businesses can collect authentication reports and identify potential configuration issues. This is often the starting point when introducing DMARC.
p=quarantine
Suspicious Email Handling
Receiving servers are requested to treat emails that fail DMARC as suspicious, commonly placing them in spam or junk folders rather than the recipient’s inbox.
p=reject
Strongest Protection
Receiving servers are requested to reject emails that fail DMARC authentication, helping prevent unauthorised messages from reaching recipients.
Although p=reject offers the strongest enforcement, businesses should first confirm that legitimate email services are properly authenticated. Otherwise, genuine emails from contact forms, marketing platforms or business applications could be rejected.
What Happens If Your Domain Isn’t Protected?
Without correctly configured email authentication, your business could face several risks.
- Brand impersonation: Scammers could send emails that appear to originate from your business.
- Phishing attacks: Customers might receive fraudulent payment requests or malicious links supposedly sent by your organisation.
- Reputational damage: Fraudulent emails associated with your domain could undermine customer confidence.
- Email deliverability issues: Legitimate emails may be flagged as suspicious or rejected when authentication requirements aren’t met.
While DMARC cannot prevent every type of email fraud, it provides an important layer of protection against direct domain spoofing.
Why Email Protection Should Be Part of Website Maintenance
Domain email security is often overlooked because the relevant records sit within DNS settings rather than the website itself.
However, changes to email providers, hosting environments, contact forms and marketing platforms can all affect how your emails are authenticated.
At Sympley, we encourage businesses to consider email authentication alongside their broader website security and maintenance practices.
Our WordPress maintenance service helps businesses maintain a more reliable online presence, while tools such as WPM247 can provide visibility into important domain protection records.
Regularly reviewing these configurations helps identify potential issues before they affect your business communications.
Need Help Protecting Your Business Domain?
Not sure whether your domain has DMARC, DKIM or SPF configured correctly? Or perhaps you’re seeing warnings about your email domain protection?
Reach out to us here at Sympley. We can help you understand your current email authentication setup, identify potential vulnerabilities and determine the appropriate next steps to improve your domain security.
Whether you need help with email authentication or ongoing website care through our WordPress maintenance service, we’re here to help keep your online presence secure, reliable and protected.
Contact Sympley today to discuss your domain and email protection.
