DNS Monitor

The DNS monitor validates that a domain name resolves to the correct IP address or value.

Configuration Options

When setting up a DNS monitor, you can configure the following options:

Basic Settings

• Name: A descriptive name for your monitor.
• Group: Optional group assignment for organizing monitors.
• Interval (seconds): How frequently updu should perform the check.

DNS Specific Settings

• Domain: The domain name to query (e.g., example.com).
• Record Type: The type of DNS record to look up (A, AAAA, CNAME, TXT, MX).
• Resolver Server: (Optional) A specific DNS server to query instead of the system default (e.g., 8.8.8.8 or 1.1.1.1).
• Expected Value: (Optional) The specific IP address or string that the record should return. If not provided, the check simply verifies that any record of the requested type exists.

Example Use Cases

• Domain Propagation: Ensure your newly updated A record points to the correct new server IP.
• Email Security Verification: Monitor your domain's TXT records to ensure SPF/DKIM policies haven't been modified.