Most chambers of commerce don’t have an IT department — they have a membership director who also runs the website. The good news: getting your domain protected against spoofing doesn’t take a consultant engagement or a budget line. The first 48 hours of a DMARC rollout are mostly DNS records and a checklist, and the rest happens on autopilot over the following weeks.
In our audit of all 50 state chambers and 20 major metro markets, 68% of state chambers scored below 60% on email and domain security basics — and the single most common gap was a missing or non-enforcing DMARC policy. Here’s how to fix that in two working days.
Day 1: Inventory your senders and turn on reporting
Step 1 — List everything that sends email as your domain. For a typical chamber that’s a short list:
- Your mailbox provider (Microsoft 365 or Google Workspace)
- Your newsletter platform (Constant Contact, Mailchimp, Higher Logic, GrowthZone, etc.)
- Your membership/AMS platform and event system (dues invoices, registration confirmations)
- Your payment processor’s receipt emails
- Website contact and form notifications
Step 2 — Publish a DMARC record in monitoring mode. Add a DNS TXT record at
_dmarc.yourchamber.org:
v=DMARC1; p=none; rua=mailto:dmarc-reports@yourchamber.orgp=none changes nothing about mail delivery — it just asks every major mailbox
provider to start sending you aggregate reports showing exactly who is sending mail
as your domain. This is zero-risk and takes ten minutes.
Step 3 — Check SPF and DKIM exist at all. Confirm you have an SPF record and that DKIM signing is enabled in your mailbox provider’s admin console. Don’t worry about perfection yet; day 2 is for alignment.
Day 2: Align SPF and DKIM for your real senders
Once the first reports arrive (24–48 hours), you’ll see your actual sending landscape — usually including a sender or two you forgot about.
- Newsletter platform: enable custom domain authentication (every major platform has a “verify your domain” wizard that gives you DKIM CNAME records). This is the single highest-impact fix for chambers, because the newsletter is the bulk of member-facing mail.
- Mailbox provider: confirm DKIM is signing with your domain, not the provider’s default.
- Payment processor and forms: add their include to SPF if they send as your domain, or switch form notifications to send from the provider’s domain instead.
Keep your SPF record under the 10-DNS-lookup limit — chambers with years of accumulated vendors often blow past it without noticing.
Weeks 2–4: Staged enforcement
With senders aligned and reports clean:
- Move to
p=quarantine; pct=25, then raisepctweekly as reports stay clean. - Move to
p=quarantineat 100%. - Finish at
p=reject— the policy that actually stops impostors cold.
Watch the aggregate reports at each stage. If a legitimate sender breaks, you’ll see it in the data before members see it in their spam folders.
Instant audit
Run a free email security scan for your chamber of commerce domain at audit.emailmenow.com, then unlock the full technical report with remediation plan and compliance evidence for $99.
Turn the work into a member benefit
Here’s the part most chambers miss: you just learned a skill 70% of your members don’t have. A spoofed chamber endangers an entire local business community — and a chamber that fixes its own domain is uniquely credible teaching members to do the same.
- Run a member workshop. A 45-minute “check your domain in 30 seconds” lunch-and-learn, using the free scan at audit.emailmenow.com, is one of the cheapest high-value programs a chamber can offer.
- Launch a “verified sender” program. Recognize members who reach DMARC enforcement with a badge in the member directory and a mention in the newsletter. It rewards good practice and gives prospective members a concrete reason to care.
- Put it in the newsletter. A short recurring “email security tip” column costs nothing and reinforces the chamber’s role as a trusted advisor — we’re happy to provide adapted copy on request.
Where your state’s chambers stand
Curious how chambers in your state scored? See the full results in our state-by-state chamber email security audit, and the background on why chambers are targeted in Why Chambers of Commerce Are Prime Targets for Email Spoofing.
For chamber staff: we can provide your chamber’s own audit report privately, benchmarks for your state, or workshop materials for your members — contact us.