Why Are Our Emails Going to Spam? Here’s How DKIM, DMARC, and SPF should be configured properly.

Have You Asked Yourself Any of These Questions?

You’re likely here because you’ve searched for:

“Why are our emails ending up in the recipient’s spam or junk folder?”

“Why are our company’s emails being classified as spam?”

“I’m receiving emails from my own email address (spoofing). How do I stop it?”

“I get spam from myself. My contacts are getting spam from me too. What’s going on?”

“How do I stop spoofing emails—emails that appear to be from my own address?”

“We’re a legitimate company and need to send bulk emails to hundreds or thousands of clients, but they end up in spam. Why? How do we fix this?”

The fastest and most efficient way to check the security and validation settings of your domain and email is by visiting https://mxtoolbox.com/.

Once there, enter your domain without www. See samples below. Check the result, then come back here and continue reading the rest of this article.

A DMARC record without a "p=" tag, like "v=DMARC1; rua=mailto:reports@yourdomain.com;", is invalid and won't enforce a policy.

What Are DKIM, DMARC, and SPF – and Why Do They Matter?

If you are experiencing one or more of those issues at beginning of this article, the solution is likely tied to three critical DNS email security standards: DKIM, DMARC, and SPF. Below, we explain what these are and how Not Without IT, experts in corporate cybersecurity and email deliverability, can help.

SPF stands for Sender Policy Framework, DKIM stands for DomainKeys Identified Mail, and DMARC stands for Domain-based Message Authentication, Reporting & Conformance.

Together these are protocols that authenticate your emails. When properly configured, they ensure your emails are verified and trusted by mail servers like Google Gmail, Microsoft Outlook, and Yahoo Mail.

SPF tells receiving servers which IP addresses are authorized to send emails from your domain.

DKIM adds a digital signature to your email, verifying that the content hasn’t been altered.

DMARC ties SPF and DKIM together and tells receiving servers how to treat emails that fail authentication.

Without these records, your domain become spoofed, which means used by cybercriminals to send fake emails on behalf of you or your company, while your real emails straightly classifies as spam, thus they moves to the recipient’s spam folder.

Not Without IT: Your go-to for solving business email spam due to DKIM, SPF, and DMARC.

Spoofing: Why You’re Getting Emails from Yourself

One of the most confusing email security issues is spoofing—when you receive spam or phishing emails from your own email address.

Even worse, your clients or business contacts might also be receiving fraudulent emails that appear to come from you. This happens when your domain lacks a properly configured SPF, DKIM, or DMARC record.

Without these protections, malicious senders can impersonate your domain with ease. The result: your brand reputation suffers, your clients lose trust, and you might get blacklisted by mail providers.

Sample of another website with proper and correct settings of DKIM, SPF, and DMARC. MXToolbox shows a green “Pass” for SPF, indicating all authorized senders are listed and the softfail (~all) is a safe default.

At Not Without IT, we analyze your DNS records, configure strong SPF/DKIM/DMARC settings, and monitor activity to stop spoofing at the source.

Once implemented correctly, email servers will begin to reject or quarantine these forged emails automatically, protecting both your business and your recipients.

Your DNS has the wrong DKIM public key for your selector, leading to "signature mismatch" errors when recipients try to verify.

Why Your Emails End Up in Spam or Junk Folders

You’re sending a legitimate newsletter or invoice—but your customer never sees it. Why? Most likely, your domain isn’t passing authentication checks by the recipient’s email server.

Modern spam filters use SPF, DKIM, and DMARC to decide if an email is trustworthy. If any of these are missing or misconfigured, even clean and professional messages may be flagged as junk, especially when you’re sending bulk messages.

For reliable email delivery, trust Not Without IT with your DKIM, SPF, and DMARC.

This impacts customer communication, marketing, and sales. You may think your emails were delivered—but they’re quietly hiding in the spam folder. That’s a massive business risk.

Not Without IT specializes in securing email deliverability by ensuring your domain’s authentication records are up to modern standards.

Stop emails landing in spam! Not Without IT fixes missing DKIM, SPF, and DMARC.

We verify, correct, and test these settings using tools like MXToolbox and Gmail Postmaster. With our help, your emails go where they belong: the inbox.

How We Fix Bulk Email Delivery Problems

Sending mass emails—such as newsletters, offers, or appointment reminders—to hundreds or thousands of recipients requires technical precision. Without correctly set up SPF, DKIM, and DMARC records, mass emails are a red flag to spam filters.

Combine that with a high volume of outgoing emails, and the risk of being flagged as spam increases dramatically.

Expert help for email spam issues: Not Without IT tackles DKIM, SPF, and DMARC.

At Not Without IT, we go beyond basic DNS setup. We help you:

Set up authenticated sending via platforms like Mailchimp, Sendinblue, or Amazon SES.

Monitor outgoing email reputation using DMARC reports.

Analyze and limit failed delivery attempts.

Advise on content formatting and unsubscribe policies to comply with anti-spam laws This approach dramatically improves deliverability.

Our clients experience significantly reduced bounce rates, fewer emails flagged as spam, and increased engagement from recipients.

Why Choose Not Without IT as Your Email Security Partner

With over 30 years of expertise in IT support, cybersecurity, and email infrastructure, Not Without IT is your go-to partner for solving email security and deliverability issues.

We don’t just configure SPF, DKIM, and DMARC—we strategically design, test, and maintain them to ensure long-term results.

Our services include:

Full audit and implementation of SPF/DKIM/DMARC.

Monitoring with weekly DMARC reports.

Configuration of BIMI (show your brand’s logo in email inboxes).

Email domain reputation repair and blacklisting removal.

Education and documentation so your internal team understands the changes.

Whether you run a law firm, a clinic, an e-commerce site, or a global corporation, we make sure your emails are secure, professional, and deliver with confidence.