I haven't upgraded to 5.5.0 yet, but I was very excited to learn about end-user whitelists and blacklists, which is something we'd been pushing for since we bought our Ironports. Unfortunately, it looks like it's being implemented in a way that make...

I just wanted to add that we're another site that had previously used greylisting quite sucessfully in the past (before we installed our C350s), and it's one feature that some people here would have liked us to continue to use. I realize that the re...