My understanding is that OP is running their own Fediverse server under fedi.aeracode.org. The challenge was that the server was not running at the root of the

My understanding is that OP is running their own Fediverse server under fedi.aeracode.org. The challenge was that the server was not running at the root of the web server hence the need for the redirect code and the resulting blog post. But yes, OP can now act under @user@domain.com in the Fediverse, reply as such etc.