This was the older url for forms framework. Right now in our platform its exposing a username and saying access is restricted. We want to just redirect this url to our homepage. I tried adding a redirect rule and that doesn't work cause I think this is handled internally by marketo and that has precedence over redirect rules.
"exposing a username"? What do you mean by this?
The /save endpoint isn't just used by older forms, it's also the (current) noscript forms acceptor.
Please explain in detail what you hope to accomplish.