Hi,

This could be the dumbest question ever, or it could be a real mystery. I only barely understand what I'm asking. So, please answer like I'm 5. lol

We regularly email a client and we recently discovered they can't get emails from our CEO, no mailer daemon or bounce notification -- just absorbed by their filter. Their email filter (Proofpoint) rejected his email because of a URL in our email footer. It looks normal to a human, but when hovering over it, the actual URL starts with linkprotect.cudasvc.com/ and gobbeldygook that includes the actual company URL.

Barracuda claims they didn't do this and they don't have our domain in their customer list.

Removing the link (no URL, not the wrapped one, nor a clean) allows the client to receive email from my boss.

However, I have an email to me, from my boss as far back as Nov 2025 with the wrapped/weird link in the hover. As if he's been using the cudasvc version of the link for a while now and it just stopped working in late July for this one client.

Two questions: 1. How can this link be in my boss' email? Especially since we are not Barracuda customers. 2. Regardless of how it got there, why is it suddenly not working?

We are using Outlook, but as far as we know we are not using any Barracuda add-ons, nor have we paid any fees to Barracuda. None of the other company email address are adding wrappers to links.

And I guess a third question: How do I fix it? lol, help me be the hero. We have four people using AIchat and finding nothing useful. Let's let the humans win one! :)

Please help.