Typically the TCP port used by SMTP is
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1) SMTP connections secured by SSL are known as
2) NVT Stands for
3) Which one of the following is an SMTP server configured in such a way that anyone on the internet can send e-mail through it?
4) Post Office Protocol, version 3 (POP3), has two modes, Delete Mode and
5) An email client needs to know the _________ of its initial SMTP server.