Response status codes indicate whether a specific HTTP request has been completed. Here are the types of response codes.
With these response codes, we decide is Roadrunner Webmail down or not?
If our test shows that Roadrunner Webmail is up but you still can't access it then follow these tips.
If our tool shows that Roadrunner Webmail is down then you can not do much to solve it. Just wait for Roadrunner Webmail to solve the issue.