I'd like to apologize to several people.
It wasn't your fault that I was having a bad week, but some of you sure took the brunt of it... and I'm too new here for such grand-scale breaches of taste.
Zimbra is a really neat package; that's why it gets me excited enough to bother complaining about it -- though there are still some things I think it ought to do, and a couple of things I really think it has to do -- but the approach I was taking certainly won't be the most productive way to make that happen. I'm sorry. I promise not to be speechless again.
But really, guys: In-Reply-To. :-)