HTTP/1.1 Server too busy

After we send a newsletter our website goes down with Server Too busy message. I do see that during that time we get many requests to the website.

Could it be that cloudflare is blocking it?

No, that’s not Cloudflare, that’s a Microsoft error when some resource limits are reached. You need to contact your host.

If your site serves exclusively static content, you could employ some Cloudflare caching, but generally it’s better to fix the server issue.

Thanks, Sandro, for clarifcation, much appreciated!

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