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What is on-demand mail relay (ODMR)?(a) protocol for SMTP security(b) an SMTP extension(c) protocol for web pages(d) protocol for faster mail transferI have been asked this question in quiz.This is a very interesting question from SMTP topic in section Application Layer of Computer Network

Answer»

The correct CHOICE is (b) an SMTP extension

Explanation: ODMR is an extension to SMTP, in which mails are RELAYED to the receivers after they are authenticated. It ALLOWS only the authorized receivers to receive the mail.



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