DNS
Domain Verification
Before sending emails, you must verify ownership of your sending domain by adding DNS records provided by Render25.
Add a Domain
Navigate to Settings → Domains in the dashboard and click Add Domain. Enter the domain or subdomain you will send from (e.g., mail.yourdomain.com).
Tip
Use a dedicated subdomain like
mail.yourdomain.com for transactional email. This isolates your sending reputation from your root domain.Required DNS Records
After adding a domain, Render25 generates the following records. Add all of them to your DNS provider.
| Type | Name | Value | Purpose |
|---|---|---|---|
TXT | @ | v=spf1 include:spf.render25.com ~all | SPF authorization |
CNAME | r25._domainkey | r25._domainkey.render25.com | DKIM signing |
MX | bounce | feedback.render25.com (priority 10) | Bounce handling |
Verify DNS
DNS propagation typically takes 5–60 minutes. Once propagated, click Verify DNS in the dashboard. You can also check from the command line:
bash
# Check SPF
dig TXT yourdomain.com | grep spf
# Check DKIM
dig CNAME r25._domainkey.yourdomain.com