- On too many update errors: Configurable block period and error threshold counter
+- Log alternative server name on successful/failed update
+
+- Clear external warning on successful update
+
+- Configurable CA certificate handling
+
+- Determine hostname TTL via DNS and remove option from config file
+
Nice to have:
- webcheck mode: Cache last known IP
it will only be updated after the next successful webcheck IP determination.
We could cache the last known IP and update the service as soon as
the service's update interval permits.
+
+- Move curl_* handling to own class/use HTTPHelper in ip_addr_helper
+
+- Add option to send out updates f.e. once a week as a kind of keepalive message.