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skgsergio

I can agree on how much power on the global traffic they have, but this blocks affect many other CDNs like Fastly, Akamai, CDN77, BunnyCDN, Alibaba...
Alternate DNS doesn't help, they block at IP level.

Yes, they block IPs belonging to CDNs (CF including R2, BunnyCDN, CDN77, Fastly, Alibaba, Akamai even)...

Re:Zendesk Email Spam on Thursday February 05, 2026 @04:44AM (#46897778)
Well, I got most of the Zendesk inbox-bombing emails into SPAM in Gmail.

All support[at]<company>.zendesk.com were flagged, none of them reached the Inbox.

Most of whatever[at]company.tld were flagged also. I think only Headspace and another that I don't remember got to my inbox. There were some automatic SPAM flags using custom domains that are more or less known: Tinder, Squarespace, TED, ...

So I guess currently their reputation is messed up.