HexChat can be configured either with the GUI (recommended) or by editing config files.
Important: Hexchat has logging enabled by default. Please consider turning it off in the menu
Settings → Preferences → Chatting → Logging
Use SSL for all the servers
Accept invalid SSL certificates. If you cannot connect without this setting, please ask in the #darkfasel channel.
Optional: If you don't want to use the graphical user interface, add these lines to your
N=Darkfasel E=UTF-8 (Unicode) F=87 D=0 S=irc.darkfasel.net/6697