Fake Web Crawler NOT

Please ignore the above. I mixed up the Ips. It is correct, not 207.* what was blocked.

Apologies.

I was quick. Here is the log and something is definitely wrong.

https://drive.google.com/file/d/15Z82O9t_kySePbE6VCeKAt79dZ9WrJTz/view?usp=sharing

This could come because i see no rdns to be available? Still this is an IP of Bing.

We’ll take a look at this, thanks for reporting it!

We use the process outlined in the article below to verify Bing IP addresses:
https://www.bing.com/webmasters/help/verifying-that-bingbot-is-bingbot-3905dc26

If the Bing IP address isn’t actually resolved to a valid hostname using reverse PTR lookups, then that will cause a problem. As far I can see, it’s working correctly for that IP address now:

https://mxtoolbox.com/SuperTool.aspx?action=ptr%3a207.46.13.207

It may point to a reverse DNS resolution issue on your server? Can you check with your host whether reverse DNS is working on the server for that IP?

It turns out the Bing now provides a list of IP address ranges for its bots so we’ve adjusted our system to take account of those now also. This will means when/if your server has rDNS issues, it can use those Bing IPs also.

This will be available in our next release.

Hi,

The server doesn’t suffer any dns issues, everything else shows right.

I will keep an eye open and see how it goes.

Thanks

Reverse DNS issues can exist even with forward DNS working normally. It definitely usually is more problematic. If your rDNS doesn’t have a problem the only reason I can see that Shield would identify this incorrectly is if there was no rDNS record available at the time. Not something we can really mitigate.

After the issue in the log, i used

https://mxtoolbox.com/SuperTool.aspx?action=ptr%3a207.46.13.207

and there were errors returned. maybe some temp issue from their dns (msoft).

Thanks !!

yep, likely a temporary issue, but hopefully our latest development will reduce the risk of misidentifying their bots in the future. Thanks again for letting us know about the issue.