You just ran the Ma3SP Email Deliverability Checker — which means you now know something most business owners don't: exactly where your domain is exposed. A low score or a missing record isn't just a technical problem. It's an open door for impersonation, invoice fraud, and emails that never reach the people you sent them to. The next step is a free 15-minute call with Graham. No pitch. Just clarity on what needs to happen and in what order.
The checker tested the three technical records that determine whether your email is trusted, delivered, and protected from impersonation. Here is what each result means in plain terms — and what happens when one is missing or wrong.
SPF is a DNS record that lists which servers are allowed to send email from your domain. When a recipient's mail server receives a message claiming to be from your address, it checks your SPF record to verify the sender is authorized.
A missing or misconfigured SPF record means any server in the world can send email pretending to be you — and many mail servers will accept it without question.
DKIM adds a cryptographic signature to every outgoing email — like a unique wax seal that proves the message actually came from your server and was not tampered with in transit.
When DKIM is missing, recipient mail servers have no way to verify the email's authenticity. It's more likely to be marked as spam, quarantined, or silently filtered before it ever reaches the inbox.
DMARC ties SPF and DKIM together and tells receiving mail servers what to do when an email fails authentication — nothing (monitor), quarantine it, or reject it outright. It also sends you reports about who is sending email using your domain.
Without DMARC, even if you have SPF and DKIM set up correctly, there is no enforcement. Fraudulent emails using your domain name may still be delivered to your customers.
Most business owners think of SPF, DKIM, and DMARC as IT checkbox items. In practice, your domain reputation determines whether invoices get paid, whether proposals are read, and whether your clients ever receive your most important communications.
If your domain or IP address lands on a spam blacklist — and it can happen without a single bad email leaving your office if your domain is being spoofed — your emails stop reaching inboxes across the organizations that subscribe to that blacklist. Major blacklists like Spamhaus, Barracuda, and SURBL are checked by Microsoft 365, Google Workspace, and most enterprise mail filters automatically.
Domain reputation directly determines what percentage of your emails reach the inbox versus landing in spam, promotions, or being rejected before delivery. Industry data consistently shows that businesses with fully configured SPF, DKIM, and DMARC see 10–30% higher inbox placement rates than those without. For a business that relies on email for client communication, proposal delivery, or invoicing, that gap is significant.
A domain without DMARC enforcement is an open invitation for attackers to send email that appears to come from your address. Business Email Compromise (BEC) scams — where attackers impersonate a company to redirect payments or trick employees — cost businesses billions annually. Small and mid-size businesses are targeted specifically because they rarely have the enforcement in place to prevent it.
Both Microsoft and Google have tightened their requirements for authenticated senders. Since 2024, both platforms have increased the weight given to DMARC alignment when filtering inbound mail — meaning emails from domains without proper authentication are more likely to be filtered or quarantined even by organizations using standard M365 or Google Workspace setups. If your clients use either platform (and most do), misconfigured records affect you.
Invoices sent via email are particularly vulnerable to reputation-based filtering. Finance teams at recipient companies often configure their email security more aggressively than standard users — meaning an invoice from a domain without proper authentication is more likely to land in spam, get quarantined by a security appliance, or trigger a rejection. Late payment disputes that trace back to undelivered invoices are more common than most business owners realize.
Domain reputation is increasingly visible. Security-aware clients and enterprise organizations run their own checks before engaging vendors — including checking whether a potential supplier's domain has proper authentication in place. A domain that fails basic SPF/DKIM/DMARC checks signals that the organization behind it has not invested in basic security hygiene. That signal affects vendor qualification decisions more than most small business owners realize.
Most tools give you a score and a list of technical jargon. Ma3SP explains what it means, fixes what's broken, and confirms it's working correctly — in plain English, every step of the way.
Graham reviews what the checker found for your specific domain and explains what each result means for your business — not in technical terms, in plain language that makes the business risk clear.
If you choose to move forward, Ma3SP accesses your DNS settings and configures or corrects your SPF record, DKIM signing, and DMARC policy — correctly, with the right enforcement levels for your email sending setup.
After configuration, Ma3SP runs your domain through the same checker and third-party validation tools to confirm everything is propagating correctly and producing passing results across all major checks.
Fill in the form with what your checker showed. Graham reviews every submission personally and responds the same business day — usually within a few hours. He will tell you exactly what your results mean, what the business risk is, and what it takes to fix it.
No technical background required. No sales pitch. Just a plain-English explanation of where your domain stands and what, if anything, you should do about it.
Tell us what you found and how to reach you. Graham will review your domain specifically and respond with a plain-English explanation of your results.
"MA3SP has a deep knowledge in the tech world and extensive educational background that sets them apart. Their proactive approach has minimized downtime and ensures our systems run smoothly."
"Ma3SP exceeded our expectations with personalized support and proactive monitoring. Their cybersecurity solutions keep our data safe and backup plans ensure we never lose critical information."
"I am very thankful for Graham and Ma3SP. Graham is focused on making sure we are utilizing our systems fully and finding ways to save money, time, and resources for our business."
Every day a domain remains without proper SPF, DKIM, and DMARC configuration is another day that attackers can use your business identity to send fraudulent emails to your customers. They don't need access to your systems to do it — they only need the absence of the records that would stop them.
The scenarios below are not hypothetical. They are the actual situations Ma3SP encounters when Michiana businesses contact us after a domain-based attack has already affected their customers or their reputation.
An attacker spoofs your domain and sends a fraudulent invoice to your client with updated payment details. Client pays the attacker. Your domain had no DMARC enforcement — nothing blocked the spoofed email from being delivered.
Your domain is used heavily by a spam campaign. Spam filtering systems flag your domain and add it to one or more blacklists. Your legitimate emails now fail delivery at organizations using those blacklists — and you don't find out until a client asks why you've gone silent.
Your proposal or contract email — sent via a platform or mail service that wasn't listed in your SPF record — failed SPF alignment and was silently quarantined by the recipient's mail server. You followed up twice by phone before discovering the email was never received.
You already know where your domain stands. The next step is sending Graham your results — he reviews every submission the same business day and responds with a plain-English explanation of what your score means, what the actual risk is, and what it takes to fix it. No technical background required. No sales pitch. Just honest answers.
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