Code:
zimbra@giskard:~$ zmprov garpu
giskard.k7sle.com:7072/service/extension/nginx-lookup
Ugh... Any other ideas? I'd like to somehow backup the messages and just blow this whole install away and reinstall cleanly. I didn't find a specific wiki to help deal with that scenario. Hopefully, that might fix the problem? Oh, and though I haven't yet said it, I'll say it now: "Thanks! I really appreciate your help.

"
Another option is to simply disable or remove the zmproxy component since, as a single server, I don't really need it, but, when I upgraded, couldn't remember if I was using it. All that I really care about is having an encrypted connection to the server. I didn't see any documentation on that idea anywhere, either.
Chris