I did have the following line in my .htaccess
RewriteRule ^indigo$ "http\:\/\/www\.meredithsweet\.com\/" [R=301,L]
which I tried removing, since I used to utilize a subdomain with a redirect (indigo.seventh-star.net to meredithsweet.com), and since I was able to get this plugin and change meredithsweet.com to be a parked domain, I didn't do that anymore...
But it doesn't work.
And someone accessing the website from a non-allowed IP address should see my 403 Forbidden error page.
How do I figure out where the error is coming from? My host seems to think it originates with this plugin somehow.