JamesUser user = (JamesUser) users.getUserByName(username);
if (user == null) {
response = new RemoteManagerResponse("No such user " + username);
} else if (user.getForwarding()){
user.setForwarding(false);
users.updateUser(user);
StringBuilder responseBuffer =
new StringBuilder(64)
.append("Forward for ")
.append(username)
.append(" unset");