Update settings.py

Allow unauthenticated SMTP.

Set EMAIL_HOST_USER and EMAIL_HOST_PASSWORD to None if the corresponding parts of the EMAIL_SERVER URL are absent.

takahe/settings.py

@@ -395,8 +395,8 @@ if SETUP.EMAIL_SERVER:
     elif parsed.scheme == "smtp":
         EMAIL_HOST = parsed.hostname
         EMAIL_PORT = parsed.port
-        EMAIL_HOST_USER = urllib.parse.unquote(parsed.username)
-        EMAIL_HOST_PASSWORD = urllib.parse.unquote(parsed.password)
+        EMAIL_HOST_USER = urllib.parse.unquote(parsed.username) if parsed.username is not None else None
+        EMAIL_HOST_PASSWORD = urllib.parse.unquote(parsed.password) if parsed.password is not None else None
         EMAIL_USE_TLS = as_bool(query.get("tls"))
         EMAIL_USE_SSL = as_bool(query.get("ssl"))
     else: