Email Security Basics That Too Many Businesses Miss
If your company sends email, you rely on SPF, DKIM, and DMARC — even if you’ve never heard of them. These three settings live in your domain’s DNS records and act like your email’s passport control, deciding what gets through and what gets flagged.
SPF (Sender Policy Framework)
Defines which mail servers are allowed to send email on behalf of your domain. Without it, anyone could “spoof” your email address.
DKIM (DomainKeys Identified Mail)
Adds a digital signature to prove your message hasn’t been altered in transit. Think of it like tamper-proof packaging.
DMARC (Domain-based Message Authentication, Reporting & Conformance)
Ties SPF and DKIM together and tells receiving mail servers what to do if something doesn’t check out — quarantine, reject, or allow.
Why it matters:
Protects your brand reputation from phishing and spoofing.
Reduces the chance of your emails ending up in spam.
Builds trust with customers and partners.
Too many businesses leave these settings misconfigured — or worse, unset — leaving the door wide open for cybercriminals.
Check your settings here, just type your domain name into the scanner:
If you’re not sure your SPF, DKIM, and DMARC are configured correctly, it’s time to check. Your inbox (and your customers) will thank you.
#CyberSecurity#EmailSecurity#DMARC#SPF#DKIM#MSP#ThoughtStreams