You Wish to Host a Mailserver on an EC2 Instance

question 395

Multiple Choice

You wish to host a mailserver on an EC2 instance. What two steps must you take to ensure utmost reliability?

• A) Create an EIP for the instance.
• B) Configure the mail service to serve as an open relay.
• C) Contact AWS to have a Reverse DNS record configured and to help keep your domain from SPAM blacklists.
• D) Provide open security group access to your instance on ports 25, 3389 and 22.

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Definitions:

Straight-line Rate

A method of calculating depreciation by evenly allocating the cost of an asset over its useful life.

Double Declining-balance

An accelerated method of depreciation where the book value of an asset is reduced at double the rate of its straight-line depreciation.

Net Income

The amount of profit remaining after all expenses, taxes, and costs have been subtracted from total revenues.