E-mail reference information

You can find protocol information and information about journal entries, and more.

Protocol information

• Simple Mail Transfer Protocol (SMTP)

• Post Office Protocol (POP)

• Mail server journal entries
  This information might help you understand the codes and messages used in journal entries.

• Simple Mail Transfer Protocol
  Simple Mail Transfer Protocol (SMTP) is a TCP/IP protocol used in sending and receiving e-mail. It is typically used with POP3 or Internet Message Access Protocol to save messages in a server mailbox and download them periodically from the server for the user.

• Post Office Protocol
  The Post Office Protocol (POP) Version 3 mail interface is defined in Request for Comments (RFC) 1725. RFC is the mechanism used to define evolving Internet standards.

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