@zachdecook It took me a few attempts but I was able to get a Prosody server up and running. I tried to document my steps and configuration if you're interested:
The folks in the MUC room are quite helpful if you run into issues.
XEP-0454 is a client side XEP. Which makes sense... if it depended on server support then a malicious admin could just disable it if they wanted to read everyone's files 🙂
It just describes how the client can encrypt the data and share the decryption key with the contact - the actual upload is still XEP-0363, it just means encrypted data is uploaded. The server doesn't care.
Hope this helps 🙂
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