pop 3 server pop服务器
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Moreover, the password needed for authentication is also transmitted as plaintext when a connection to POP server is established, which may result in the stealing and divulging of the email.
另外在连接服务器(pop)时，传送的验证密码也是以明文形式传送的，同样容易引起密码的泄露，最终导致邮件被盗、泄密等。
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