Website rejecting all inbound traffic after moving nameservers to Cloudflare

Website, Application, Performance Security
1

What is the name of the domain?

https://newmillenniumreport.com

What is the error number?

Cloudflare Ray ID: 90932698dd4d81bd

What is the error message?

Sorry, you have been blocked You are unable to access secureservercdn2.net

What is the issue you’re encountering

I switched DNS Nameservers for this wordpress site last night around 12am to Cloudflare. This morning I was working on the website and all of a sudden I began receiving this message. I checked it from three other devices, so three different browsers and three IP addresses and it is giving me the same message. Also when I check [Your IP: 3.217.200.190] this is not my IP address. What could be the cause of all this?

What steps have you taken to resolve the issue?

Three different browser, three ip addresses. Set proxy to DNS only

Was the site working with SSL prior to adding it to Cloudflare?

Yes

What is the current SSL/TLS setting?

Full

What are the steps to reproduce the issue?

go to the website, though you may see a cached version.

Screenshot of the error

website down.png
website down.png1093×985 41.3 KB

2

Also I would like to add there are no IP Access restrictions in place in any form, whether blocklists or geographical location.

3

That sounds like a problem with one of your plugins.

4

So it can run smoothly until changing Nameservers and then a plugin will cause Cloudflares cdn’s to begin blocking ip address?

5

I couldn’t find any information on what secureservercdn2.net actually is, but based on this topic here, I think it’s related to the “Ajax Search” plugin:

Could be a coincidence, could be that the plugin isn’t compatible with Cloudflare.

6

Secureservercdn2 is a cloudflare cdn server I believe. I don’t have Ajax Search installed but I will try to restore from a backup with no plugins and see.

7

No, the site is using Cloudflare, just like your site.

I know that GoDaddy uses the domain secureservercdn.net for their CDN platform, but I really don’t know if secureservercdn2.net is related to them as well.

8

Ahh, I completely forgot about that.

I just checked that address and it’s an Ezoic address. So it will be related to them somehow.

9

I recently moved my website’s nameservers to Cloudflare, and now I’m facing a major issue—the site is rejecting all inbound traffic! I noticed a similar issue was posted here before, but I haven’t found a clear solution yet.

Here’s what’s happening:

:small_blue_diamond: Error Messages: Some visitors report getting “403 Forbidden” or “Error 521: Web Server is Down.”
:small_blue_diamond: Cloudflare Settings: I checked my DNS settings, and everything seems correct. But could it be a misconfigured SSL/TLS setting?
:small_blue_diamond: Firewall & Security Rules: I didn’t set any strict firewall rules, but could Cloudflare’s security settings be blocking legitimate users?
:small_blue_diamond: Server-Side Issues: Could this be an issue with my hosting provider rejecting Cloudflare’s IPs? If so, how do I allow them?

Maybe I’m missing something in my setup?

Has anyone dealt with this before? What’s the best way to troubleshoot and fix this issue?

10

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