(10:47:18 AM) ejegg: Jeff_Green: do you know what might be restricting access to images with paths like https://payments.wikimedia.org/extensions/FundraisingEmailUnsubscribe/templates/wle_001_files/640px-Satchari_National_Park_Habiganj_Sylhet.jpg ?
(10:47:42 AM) ejegg: That's giving me a redirect to donatewiki

We haven't whitelisted extensions/FundraisingEmailUnsubscribe so the proxy behavior is to fall through to a redirect to donate wiki.