执行asp代码后，显示
错误类型：
jmail.SMTPMail (0x8000FFFF)
The message was undeliverable. All servers failed to receive the message


是何原因？请各大侠帮助，帮助。

The message was undeliverable. All servers failed to receive the message
无法投递此消息，服务器接收信息时失败。