This might help: http://www.bing.com/webmaster/help/how-to-report-an-issue-with-bingbot-25c19... How do I Report an Issue With Bingbot? Bingbot is the name of the crawler used by Bing to crawl or “spider” the web. It is Bingbot's job to find new and updated pages on websites across the Internet, so that they can be processed for indexation. When crawling a website, Bingbot looks at robots.txt for special instructions from the website owner. Bingbot honors robots.txt directives, including the * crawl-delay:* setting, and, in the absence of a crawl-delay, respects the input from Webmasters in the Crawl Control Feature. Generally, Bingbot does a good job at determining how frequent it should visit pages on your site, taking robots.txt and Crawl Control rules and hints into consideration. We call this “Crawl Politeness”. However, there still may be cases were you feel Bingbot is not polite enough and is visiting your pages more than works for you (overcrawling). REPORTING OVERCRAWLING Here’s the steps you can follow if you think Bingbot is overcrawling your site or not observing robots.txt rules: 1. Verify that the bot traffic you are seeing is in fact from a valid Bingbot server. You can do this by not only looking at the User-Agent string (which can be easily spoofed by anyone) but also at the IP address and using the *Verify Bingbot tool<http://www.bing.com/toolbox/verify-bingbot> * to get a verdict 2. Once you have verified that this involves genuine Bingbot traffic, you can reduce crawler traffic as follows (if you haven’t done so already): 3. Lower the speed of crawl during busy hours using the Crawl Control feature 4. If that’s not sufficient, add a crawl-delay: directive to your robots.txt: Bing supports whole number values ranging from 1 – 30. Each number maps to the number of seconds we need to wait between requests, so 1 means a maximum of 1 request per 1 second – which is slow, but still adequate for smaller sites. 30 is extremely slow and means we are allowed only 1 request per 30 seconds. 5. If you have followed step 1 and 2 and the issue is still present, you can contact *Bing Webmaster Support<http://go.microsoft.com/fwlink/p/?linkid=261881> *. Fill out the required fields and in the “*What type of problem do you have?” *dropdown, select “*Under-Crawling or Over-Crawling inquiry*” and describe the problem you are seeing. You can expect a reply within 24-48 hours. When you report over-crawling issues, the support team will ask you to provide server log samples that show the Bingbot activity over a certain period of time in a next step, so make sure to have those ready. On Tue, Mar 12, 2013 at 11:57 AM, Blair Trosper <blair.trosper@gmail.com>wrote:

If possible, I need someone from Microsoft/Bing (a la the MSN and Bing crawler bots) to contact me off list.

Several IPs going back to AS8075 (with the user agent MSN and "bingbot") are basically attacking several IPs on my network with hundreds of requests per second.

Thanks, Blair