Nov 02, 2021 · Which protocol is a more secure alternative to using SMTP for outgoing email ? Chapter 8 Solutions Reviewing the Basics 1. List four types of …
13. Which protocol is a more secure alternative to using SMTP for outgoing email? SSH PRL 14. Which email server uses ActiveSync to sync all emails, contacts, and calendar updates on the server and client machines, including mobile devices? Microsoft Exchange End of preview. Want to read the entire page? Upload your study docs or become a
Which protocol is a more secure alternative to using SMTP for outgoing email? S/MIME S/ MIME 14. Which email server uses ActiveSync to sync all emails, contacts, and calendar updates on the server and client machines, including mobile devices? Microsoft Exchange Microsoft Exchange 15.
29. Which protocol is a more secure alternative to using SMTP for outgoing email? S/MIME 30. What is the difference between tethering and hotspots? Tethering provides wireless access to the Internet for only one computer through a phone's cellular signal. Hotspots provide Wi-Fi access to the Internet for many users.
Other protocols, such as the Post Office Protocol (POP) and the Internet Message Access Protocol (IMAP) are specifically designed for use by individual users retrieving messages and managing mail boxes.
SMTP is a connection-oriented, text-based protocol in which a mail sender communicates with a mail receiver by issuing command strings and supplying necessary data over a reliable ordered data stream channel, typically a Transmission Control Protocol (TCP) connection. An SMTP session consists of commands originated by an SMTP client (the initiating agent, sender, or transmitter) and corresponding responses from the SMTP server (the listening agent, or receiver) so that the session is opened, and session parameters are exchanged. A session may include zero or more SMTP transactions. An SMTP transaction consists of three command/reply sequences:
A session may include zero or more SMTP transactions. An SMTP transaction consists of three command/reply sequences: MAIL command, to establish the return address, also called return-path, reverse-path, bounce address, mfrom, or envelope sender. RCPT command, to establish a recipient of the message.
An SMTP transaction consists of three command/reply sequences: MAIL command, to establish the return address, also called return-path, reverse-path, bounce address, mfrom, or envelope sender. RCPT command, to establish a recipient of the message. This command can be issued multiple times, one for each recipient.
A typical example of sending a message via SMTP to two mailboxes ( alice and theboss) located in the same mail domain ( example.com or localhost.com) is reproduced in the following session exchange. (In this example, the conversation parts are prefixed with S: and C:, for server and client, respectively; these labels are not part of the exchange.)
User-level email clients typically use SMTP only for sending messages to a mail server for relaying, and typically submit outgoing email to the mail server on port 587 or 465 per RFC 8314.
In November 1995, RFC 1869 defined Extended Simple Mail Transfer Protocol (ESMTP), which established a general structure for all existing and future extensions which aimed to add-in the features missing from the original SMTP. ESMTP defines consistent and manageable means by which ESMTP clients and servers can be identified and servers can indicate supported extensions.