Nope, it's what Mailchimp, etc., do. All the outgoing links just fly through their server on the same hostname. We do the same with our hostname. I have eviden

Nope, it's what Mailchimp, etc., do. All the outgoing links just fly through their server on the same hostname. We do the same with our hostname. I have evidence that Google follows these links though, because if you link to a "bad" site even through a redirector, Google notices and will throw you into spam or say you're phishing, etc :-)