Most SMBs run email on shared hosting or cheap providers. Your MX records point to infrastructure you don't control, your messages traverse the internet unencrypted, and your DMARC policy is probably set to "none."

Here's what that actually means:

Anyone on the same network can read your emails in transit. Without enforced TLS and proper certificate pinning, SMTP connections between servers are trivially interceptable.

Your domain is spoofable. Without a strict DMARC policy backed by proper SPF and DKIM alignment, anyone can send email as your-company.com. Your clients, vendors, and employees are all targets.

You have zero control over your data. When your mail sits on someone else's server, you're trusting their encryption, their access controls, and their compliance posture. Most shared hosts don't even encrypt at rest.

The fix isn't complicated — it's just not taught properly. A self-hosted mail server with Postfix + Dovecot, properly hardened with TLS 1.3, DANE/TLSA records, full DKIM signing, and encrypted storage gives you actual sovereignty over your communications.

I've been deploying these stacks for SMBs for years. Now I'm teaching the full process — from DNS records to production hardening — inside MailArmor Academy.

If you manage IT for a small business and email security keeps you up at night, this is for you.