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_dmarc.yourdomain.com in DreamHost DNS.netblocks.dreamhost.com and any third‑party senders.DMARC (Domain‑based Message Authentication, Reporting & Conformance) tells receiving mail servers how to handle unauthenticated mail from your domain. It reduces phishing and spoofing by providing clear policies and reporting. Implementing DMARC with Palisade’s Email Security Score gives you visibility into abuse attempts.
Use Palisade’s DMARC Generator to specify your policy (none, quarantine, reject) and reporting address. The tool returns a TXT string that you will paste into DreamHost’s DNS settings.
Log into DreamHost, go to **Domains → Manage Domains**, click **DNS** for the target domain, and add a custom record:
_dmarc.yourdomain.comAfter saving, use Palisade’s DMARC Lookup tool. It will query your DNS and show the exact record, confirming there are no typos.
DreamHost’s default SPF includes its mail servers. A typical record is:
v=spf1 mx include:netblocks.dreamhost.com include:relay.mailchannels.net -allIf you use other services (e.g., a marketing platform), add their include statements to the same TXT record. Verify the combined record with Palisade’s SPF Lookup tool.
No. Multiple SPF TXT records cause a “PermError” and break validation. Consolidate all authorized senders into a single record.
DreamHost automatically creates DKIM keys for your domain. The public key appears as a TXT record named selector._domainkey.yourdomain.com. Use Palisade’s DKIM Lookup to verify the key matches the selector used by your mail service.
BIMI (Brand Indicators for Message Identification) displays your logo next to authenticated messages. After DMARC is in “quarantine” or “reject” mode, upload your SVG logo via Palisade’s BIMI tool and add the BIMI TXT record.
Mail providers send aggregate reports daily, but they may take up to 72 hours to appear in Palisade’s dashboard after the record is live.
Review the failure details in the DMARC report. Common issues include missing include statements in SPF or outdated DKIM selectors. Update the DNS records accordingly and re‑validate with Palisade tools.
Yes. Palisade’s Email Security Score runs a full check of DMARC, SPF, DKIM, and BIMI, giving you a single health rating and remediation steps.
Each subdomain that sends email should have its own DMARC, SPF, and DKIM records, or you can use a wildcard DNS entry. The same Palisade tools work for any subdomain you enter.
Open Palisade’s DMARC Generator, choose your policy, and provide a reporting email. Copy the generated TXT string.
Navigate to **Domains → Manage Domains → DNS**. Click **Add Custom DNS Record** and fill in:
_dmarc.yourdomain.comRun the DMARC Lookup tool to ensure the record is published correctly.
Use Palisade’s SPF Lookup to confirm the record includes netblocks.dreamhost.com and any third‑party services.
Run the DKIM Lookup for your selector (e.g., default._domainkey.yourdomain.com) and verify the public key matches DreamHost’s output.
If you want brand logos in inboxes, add a BIMI TXT record after DMARC is in enforce mode, using Palisade’s BIMI tool to generate the record.
Give DNS up to 72 hours to propagate, then log into Palisade’s dashboard to view DMARC aggregate reports and take corrective action as needed.
By following these steps, you’ll secure outbound mail from DreamHost, protect your brand, and gain visibility into any abuse attempts.
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