So I was having issues connecting to my @tty.sdf.org account via ssh. I would initiate the ssh connection and get an error without being prompted for a password:

Received disconnect from 205.166.94.8 port 22:2: Too many authentication failures

checked `ssh -v <username>@tty.sdf.org` and OpenSSH was presenting every key in my .ssh folder (I normally just connect with a password) which exhausted the logon attempts before it got to the point of asking for a password. `ssh -o PreferredAuthentications=keyboard-interactive,password <username>@tty.sdf.org` worked. I added this to ~/.ssh/config to stop it from happening again:

Host tty.sdf.org
User <username>
PubkeyAuthentication no