Active E-mail system protocols monitoring algorithm

E-mail systems are some of the most admired Internet-based applications today. They enable users to send and receive e-mail messages between each other both from inside and outside the local area network. The simple mail transfer protocol (SMTP) is a transportation protocol used to transfer Email messages over the Internet. When the e-mail server sends email messages among each other or from the clients to the E-mail server, they are also used SMTP protocol. Post office protocol (POP3) or internet message access protocol (IMAP4) are e-mail retrieval protocols used to retrieve the e-mail messages from the server to the client. These E-mail messages are sent to it using the SMTP protocol. In this paper, the SMTP, POP3, and IMAP4 Email system protocols are briefly explained. New active monitoring algorithm architecture is also proposed, to improve the functions of the current e-mail system protocols and to detect e-mail protocol failures during the process of sending and retrieval of E-mail messages.