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What is E-Mail Protocols

Encyclopedia of Information Science and Technology, Second Edition
Simple mail transport protocol (SMTP) is a set of commands for transport of ASCII encoded e-mail messages. Post office protocol (POP3) retrieves new messages from a mailbox to a remote e-mail client. A remote e-mail client can simultaneously access several mailboxes on different mail servers with the Internet message access protocol (IMAP).
Published in Chapter:
Current Network Security Technology
Göran Pulkkis (Arcada Polytechnic, Finland), Kaj Grahn (Arcada Polytechnic, Finland), and Peik Åström (Utimaco Safeware Oy, Finland)
DOI: 10.4018/978-1-60566-026-4.ch142
Abstract
Network security is defined as “a set of procedures, practices and technologies for protecting network servers, network users and their surrounding organizations” (Oppliger, 2000, Preface). The need for network security is caused by the introduction of distributed systems, networks, and facilities for data communication. Improved network security is required because of the rapid development of communication networks. Network security is achieved by using softwareand hardware-based solutions and tools.
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