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Posted on July 18th, 2017 by admin

When you send an e-mail message to another person, the mail server processes the message and delivers it to the appropriate user’s mailbox. For example, if you send a message to “bob@mail.com,” the mail.com server looks for a user named “bob” to deliver the message to. If the user does not exist, the mail server may bounce the message back to the sender, saying “Sorry, that user does not exist.” These messages often come from “Mail Delivery Subsystem” and have a subject line that reads “Returned mail: see transcript for details.”

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