DQM can tell us about broken links, but we would like to know about broken requests to content that DQM may not have links/visibility into. For example, links from email campaigns or external sites. The report could be as simple as number of requests to distinct URLs for a given date range where we would put attention on those with a higher number of requests. This seems simple enough to enable by virtue of capturing this information from the default 404 page where the URL is intact.