Bot Fight Mode is blocking bingbot and BingPreview by default. I’ve managed to set working rules to allow bingbot, however no rule specified (no matter the order) will allow BingPreview to pass with the following:
User agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534+ (KHTML, like Gecko) BingPreview/1.0b
IP Addresses (Range specified): 22.214.171.124 - 126.96.36.199 or 40.77.139.*
ASN: AS8075 MICROSOFT-CORP-MSN-AS-BLOCK
Note those ips where checked against Bing Webmaster “Verify Bingbot” Tool and they are shown as verified bots.
I’ve tried rules with User Agent “contains” or “equal”, IP Addresses “lists” and anything i can think of and all the requests are “JS Challenge” for those ips, no matter the order or priority of the specified rules.
Perhaps someone had or managed to fix this issue? Also it seems quite strange Cloudflare doesn’t recognize those ips by default, i assume those are new and maybe the database hasn’t been updated yet.