Why Letting Tenacity IT Manage Your Domain & Email Security Is a Smart Move

Let’s be honest - IT security can sound like alphabet soup sometimes. SPF, DKIM, DMARC… you’d be forgiven for thinking we made those up.

But here’s the thing: those three little acronyms quietly protect your business from one of the biggest threats out there - email fraud.

And the best part? You don’t have to lift a finger, because we handle it for you.

Why managed domains are important for email security

Email is still the number one way cybercriminals attack businesses.If someone can make it look like an email came from you, they can:

• Trick staff or suppliers into paying fake invoices 💸

• Get access to confidential information 🕵️‍♀️

• Send dangerous links that install malware 🦠

  
  

That kind of attack can cause serious damage - to your finances and your reputation.

The good news? SPF, DKIM, and DMARC are like three security guards standing at your digital front door, making sure no impostors sneak in.

1. SPF — The Guest List 📝

SPF (Sender Policy Framework) works like a guest list for your email domain.

It tells the world: “Only these approved servers can send emails from my domain.”

So if a hacker tries to send fake emails pretending to be you - but they’re not on the list - they get kicked out immediately.

Example: You use Microsoft 365 for email. We make sure Microsoft’s servers are on your SPF list, so any fake “you” emails from elsewhere don’t stand a chance.

2. DKIM — The Signature ✍️

DKIM (DomainKeys Identified Mail) adds a unique digital signature to every email you send.

It proves that:

• The message really came from you.

• Nobody tampered with it on the way.

  
  

Think of it like sealing a letter with your own wax stamp - if anyone tries to open it and re-seal it, it won’t match.

3. DMARC — The Rulebook 📖

DMARC (Domain-based Message Authentication, Reporting & Conformance) is the rulebook that brings SPF and DKIM together.

It tells mail servers what to do when something fails a check: reject it, quarantine it, or allow it. It also gives us reports showing who’s trying to impersonate your domain - so we can spot and stop attacks before they ever reach your inbox.

Example: If someone tries blasting out 10,000 fake emails claiming to be from your practice, DMARC tells the receiving servers: “Don’t deliver those - they’re fake.”

Meanwhile, we see the attempt in real time and keep your domain reputation spotless.

Why Let Tenacity IT Handle It?

Sure, you could set this up yourself… but it’s tricky, time-consuming, and one wrong setting could block your own emails or open the door to attackers.

Here’s why letting us manage it is a no-brainer:

• We do it right the first time. We know all the moving parts - and how to avoid costly mistakes.

• We monitor everything. SPF, DKIM, and DMARC aren’t “set and forget.” We keep an eye on your domain every day and fix issues before they cause trouble.

• We protect your reputation. Fake “you” emails can destroy trust. We make sure that never happens.

• You get peace of mind. You don’t have to understand the jargon - you just get reliable, secure email that works.

  
  

Email is the heartbeat of your business - and also one of the biggest targets for cybercrime.

By choosing managed domains and email security:

✅ You stop fraudsters from pretending to be you.

✅ Your emails get delivered safely and trusted by recipients.

✅ You get continuous monitoring and updates behind the scenes.

It’s simple, affordable protection that just works - quietly keeping your communications secure while you focus on running your business.

Because with Tenacity IT watching your back, your inbox stays yours. 💪