Disable DHE ciphers. We don't loose any compatibility as we already use TLS 1.2, and ECDH is faster and safer. Also, it's better so specify the curve. This is the conf I use here : https://tls.imirhil.fr/https/mstdn.io
If the file package is not installed, we get "Validation failed: File has contents that are not what they are reported to be" when upload media.
Missing -u parameter to specify the mastodon user.
Angristan