220 Mail2World SMTP Server Ready
500 Unknown or unimplemented command
500 Unknown or unimplemented command
500 Unknown or unimplemented command
500 Unknown or unimplemented command
500 Unknown or unimplemented command
500 Unknown or unimplemented command
500 Unknown or unimplemented command
500 Unknown or unimplemented command
500 Unknown or unimplemented command