What is full form of ODMR?

A. On-Demand Mail Relay

B. Online Demand Mail Relay

C. Online Delivery Mail Relay

D. On-Demand Mail Reply

Correct Answer is :

A. On-Demand Mail Relay

Explanation

On-Demand Mail Relay (ODMR) is an SMTP extension standardized in RFC 2645 that allows e-mail to be relayed to the recipients after they have been authenticated.