Using e-mail to send messages is the best choice to convey urgent and highly sensitive information. E-mail is just a conversation between you and the recipient. So it is the best when it comes to when you are sending a highly sensitive information. While telephone fax letter and dispatch radio may need to use a mediator to transfer messages which violates the confidentiality of the information.
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The resource record that allows other servers to deliver Internet mail using SMTP is called; Mail Exchanger (MX)
<h3>Use of Mail Exchanger </h3>
The correct answer to the blank part of the question is "Mail Exchanger(MX)". This is because a mail exchanger record is simply an MX record that identifies the mail server that has the responsibility of accepting email messages on behalf of a domain name.
Now this Mail Exchanger also operates by allowing other servers to deliver Internet mail with the aid of SMTP(Simple mail transfer protocol)
Read more about SMTP at; brainly.com/question/14568877
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