Why Authentication Matters

Domain authentication (SPF, DKIM, DMARC) tells receiving mail servers that your emails are legitimate. Without it, your emails are more likely to land in spam. Google and Yahoo require authentication for bulk senders.

Step 1: Add Your Sending Domain

1. Go to Settings → Sending Domains
2. Click Add Domain
3. Enter your domain (e.g., yourdomain.com) and click Continue

Step 2: Add the SPF Record

MisarMail will show you a TXT record to add to your domain DNS:

Type: TXT
Host: @
Value: v=spf1 include:spf.misarmail.io ~all

If you already have an SPF record, add include:spf.misarmail.io to the existing record rather than creating a second one. Only one SPF record is allowed per domain.

Step 3: Add the DKIM Record

MisarMail generates a unique DKIM key for your domain:

Type: TXT (or CNAME, depending on your DNS provider)
Host: mail._domainkey.yourdomain.com
Value: [generated key — copy from MisarMail settings]

Step 4: Add the DMARC Record

Type: TXT
Host: _dmarc.yourdomain.com
Value: v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com; fo=1

Start with p=none (monitoring mode). After 30 days with no issues, advance to p=quarantine, then p=reject.

Step 5: Verify

After adding the DNS records, return to MisarMail → Sending Domains and click Verify. DNS propagation can take 5–60 minutes. All three records must show a green checkmark before your domain is ready to send.