GPG not retrieving keys when verifying

[Todd A. Jacobs]

I'm not sure how I'm supposed to get GPG to automatically retrieve
keys for signatures when validating a key. I'm currently running:

    gpg --keyserver-options auto-key-retrieve -kvv FBB75451

which doesn't do what I expect. I get a whole bunch of [User ID not
found] messages, when what I expected was that keys matching those
signatures would be retrieved from the keyserver.

What am I doing wrong here?