sub start {
    my $self = shift;
    my $name = $self->name;
    if (my $pid = fork()) {
        # parent                                                                                                                                                      
        exit 0;
    }

    #Child                                                                                                                                                            
    if (Proc::PID::File->running({name=>$name})) {
        die "Couldn't start: '$name' already running.";
    }

    $self->init_mailer_daemon;
}