I've flagged Keep a check on 404s for moderator attention, but I can't decide myself it if's appropriate for SQA or not. So, meta. Basically, the person wants to know how best to long-term monitor a Web site for availability/errors. To me, that's not a test question. That would totally be a test question if it was about how to monitor a Web site so I can detect problems when I'm testing it, but not "How can I notify someone if my production site goes down?" The fact that the QA department in their organization is irrelevant; it's not being done as part of a test/QA activity.
is probably an answer to the question, or at least a starting point.