smtp_auth_plain

def login(user, password):
    s = smtplib.SMTP_SSL(host='w00bf382.kasserver.com', port=465)
    s.ehlo_or_helo_if_needed()
    print('Features:', s.esmtp_features)
    print('AUTH PLAIN ->', s.docmd('AUTH PLAIN'))
    plain = '{}\x00{}\x00{}'.format(user, user, password)
    plain = base64.b64encode(plain.encode('latin1')).decode()
    print('AUTHENTIFICATION ->', s.docmd(plain))
    print(s.quit())