Expansion of SMTP is
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1) Post Office Protocol, version 3 (POP3), has two modes, Delete Mode and
2) Simple mail transfer protocol (SMTP) utilizes _________ as the transport layer protocol for electronic mail transfer.
3) SMTP is used to deliver messages to
4) Post Office Protocol, version 3 (POP3) is simple and limited in
5) When the mail server sends mail to other mail servers it becomes ____________