a1 authenticator: client_condition = client_set_id = driver = plaintext public_name = PLAIN server_advertise_condition = server_condition = xxx server_debug_print = server_mail_auth_condition = server_set_id = no_client_ignore_invalid_base64 client_send = server_prompts = a2 authenticator: client_condition = client_set_id = driver = plaintext public_name = PLAIN server_advertise_condition = server_condition = server_debug_print = server_mail_auth_condition = server_set_id = no_client_ignore_invalid_base64 client_send = server_prompts = a3 authenticator: client_condition = client_set_id = driver = plaintext public_name = LOGIN server_advertise_condition = server_condition = server_debug_print = server_mail_auth_condition = server_set_id = no_client_ignore_invalid_base64 client_send = server_prompts = a4 authenticator: client_condition = client_set_id = driver = plaintext public_name = LOGIN server_advertise_condition = server_condition = server_debug_print = server_mail_auth_condition = server_set_id = no_client_ignore_invalid_base64 client_send = server_prompts =