KnightGuard.Net User's Guide
Alert Messages
What to Do if you are Alerted

Alert Messages

Some alerts you may receive, and their meanings:

unknown host - KnightGuard.Net was unable to resolve the IP Address of your server. If the URL is valid, this indicates that KnightGuard.Net was unable to convert the Site Name into an IP address, required for setting up browser connections. Name Servers servers generally take care of this, and the problem could reside with either KnightGuard.Net's Name Server or with your site's Name Server.

cant connect - KnightGuard.Net was unable to establish an HTTP connection with the requested server. DNS resolved OK, but your server could not be reached to request a page.

retrieved too slow - The URL you requested to be monitored was retrieved successfully, but not within the timeframe set by your desired sensitivity.

page/title error - When KnightGuard.Net downloads your page for the first time, it remembers the page title, contained between <TITLE> tags in your HTML document. On subsequent retrievals, if the page title differs from the current one, you receive an alert that the title changed.

The most common reason you'll get this message (asside from when the title actually does change due to a change in title) is when the server sends back a page other than the one you expected or the complete page cannot be retrieved properly. This can happen when the monitored page is temporarily unavailable, or if only a portion of the page was downloaded but for some reason, the connection errored out and the complete page could not be retrieved. In the first case, the server sends back a "Page Unknown" or "Error 404" error. In the second case, the TITLE may not be able to be extracted from the page. In both cases, you'll receive two alerts: One when the "Page Unknown" or "partial" page is served (because the title of this page is different), the second when the monitored page is again available (again, the page title is different from the last time it was checked).

You may also receive this error if your page is your page title is dynamically generated. Each time the title changes you'll receive an alert. If this is the case, we recommend creating a dummy static page on your site which can be used for monitoring.

What to do if you are alerted

If you receive an alert - DON'T PANIC. One alert does not necessarily mean trouble. But it is a call to action. If you are alerted, always check the site yourself. There are instances when your site may be unavalable for a short time (like during a maintenance window or system reboot), and because KnightGuard.Net is continually checking, we're more likely to catch it than someone browsing.

If you are not in a position to check the site yourself, see if you can call someone who can do it for you. If you can't find someone and you need to know, call your provider or technical support staff so they can check it out. If you can wait - wait 15 minutes or so - till the next time KnightGuard.Net checks if for you. If you receive two consecutive alerts, you can be fairly confident that there is a problem, and you need to contact your provider or technical support staff to get on it ASAP.


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