This message contains a digital signature, but the signature wasn’t made at the same time the email message was sent. This could be an attempt to deceive you with content from the wrong context: e.g. content written in another timely context or meant for someone else.
此消息包含数字签名，但签名时间与邮件发送时间不一致。这可能是有人试图利用错误上下文中的内容（例如，另一适时的上下文中撰写的内容，或是本应发送给另一人的内容）来欺骗您。