There’s a bug in your Apache configuration.
http://bsidesslc.org/ configured to redirect to
http://www.bsidesslc.org – notice that one ends in a slash, and one doesn’t.
http://bsidesslc.org/.well-known/acme-challenge/foo is genuinely redirecting to
http://www.bsidesslc.org.well-known/acme-challenge/foo. You can see for yourself with your browser or a tool like
I’m not an Apache expert, but you need to check your
RewriteRule or whatever sends the redirect, and add a
You can also configure
http://bsidesslc.org/.well-known/acme-challenge/ not to redirect at all, if you prefer, but it’s not necessary. I don’t know how to do so in Apache – if it’s possible at all – off the top of my head.
(A non-buggy redirect isn’t a problem, as long as
http://www.bsidesslc.org/.well-known/acme-challenge/ is configured to serve the challenge files from the proper directory.)