Yes, that is what I recommend.  Of course you may offer any promise you like regarding the files on your site, and that is fine, but that comes from you and not from me or the BAMT project.  I can only guarantee the content of the mirrors that have official arrangements with the BAMT project, surely that makes sense.  It's not that I don't appreciate you helping some people out, I just cannot take any responsibility here.  While you might have only the best intentions, others may offer mirrors that do not.
Also I cannot take responsibility for the security of your website.  You may have authentic images there now and some hacker may replace them with something else tonight.  Checksums are great but most people ignore them unfortunately.  All in all its just a headache to have uncoordinated mirrors out there.

We will move the official site to a more reliable hosting provider so it will not be an issue in the future.