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_ > You started talking, but didn't read it. S-mei even lied and told me to go back to the magpie, take it away from school and go back to my mother. In English, it means at, so the email address refers to the user account on the host computer, and the email address is not an identity.
_ > Do you want to start with phenol?
_ ? 1, the account representing the user's mailbox, must be unique for the same mail receiving server;
_ ? 2. ""is a delimiter;
_ ? 3. The domain name of the mail receiving server of the user's mailbox is used to mark its location.
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