DNS Challenge
The DNS-01 challenge validates domain ownership by requiring you to add a specific DNS TXT record. This method works even if your server is not publicly accessible on port 80.
When to Use DNS-01
- Your server is behind a NAT or firewall
- Port 80 is already in use by another service
- You want to issue wildcard certificates (
*.example.com) - Your ISP blocks port 80
Process
Step 1: Start the Challenge
/zyveraweb acme start example.com dns
Step 2: Accept ToS
/zyveraweb acme tos
Step 3: Get DNS Record Details
The plugin displays the required TXT record:
Create DNS TXT:
_acme-challenge.example.com IN TXT <long-validation-string>
Step 4: Add the DNS Record
Log into your DNS provider's control panel and add a TXT record:
| Field | Value |
|---|---|
| Name | _acme-challenge |
| Type | TXT |
| Value | The validation string displayed by the plugin |
| TTL | 300 (5 minutes) or lower |
Step 5: Wait for Propagation
DNS changes can take a few minutes to propagate. Use a tool like dig or an online DNS checker to verify:
dig _acme-challenge.example.com TXT +short
Step 6: Confirm
/zyveraweb acme confirm
The plugin will:
- Trigger the challenge
- Wait for Let's Encrypt to validate the DNS record
- Issue the certificate
- Save it to
plugins/ZyveraWeb/ssl/<domain>/
Step 7: Enable HTTPS
Add an ssl: block to the site config in config.yml and run /zyveraweb server restart.
Troubleshooting
| Issue | Solution |
|---|---|
| DNS not propagating | Wait longer, check TTL settings |
| Challenge failed | Verify the TXT record value matches exactly |
| Multiple domains | You may need multiple TXT records |
| Wildcard certificates | Use *.example.com as the domain |
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