521 error emails from a week ago started again

[d.taylor]

What is the name of the domain?

na

What is the error number?

521

What is the error message?

Server Unreachable | Error 521: Web server is down

What is the issue you’re encountering

Repeat issue of 1 week ago, false positive 521 emails

[d.taylor]

Just had to get a post up as it kept rejecting it due to links then deleting my post.

Is a recurrence of this incident Cloudflare Status - False positive 521 email alerts

Originally posted here: Email Says Error 521: Web Server Is Down But Not Down

Looks to be same situation, false positive emails being sent, origin servers are fine and show no issues.

[jimweb]

We had this same issue from a week ago too. And we are also getting it again today. All seems to be well with our origin servers.

[d.taylor]

Yep this is still ongoing, had it for multiple sites on different origin servers, nothing on their status page yet but it took a while for them to update last time too!

[epic.network]

Here is a related update for those who are interested.

[IMPORTANT] Updates to some alerts

Hi Community, Within the next several days, you might see changes in some of your alerts. Here’s what we’re updating: Passive Origin Monitoring If you haven’t noticed already, you may start receiving more emails regarding 521 errors from our Passive Origin Monitoring alerts. We’ve made some updates to this alert to give more accurate notifications. These may fire if your zone has low traffic and receives even a small number of 521 errors (e.g. from automated scans). We’re in the process of…

[valeoplanning]

I have received these 521 error emails for a domain that has never been setup anywhere, yet it’s showing site traffic. Also, I purchased this domain from Cloudflare, Cloudflare is the domain registrar? What’s going on?

[danalfrancey]

Can we revert back to these “less accurate” standards because for me, the new standard has not been accurate but im getting 3 to 4 useless emails a day across my domains now.