Your company’s email server has been filling up employee’s email boxes with advertisements for things they did not request. You have been asked to research how to stop these types of messages from getting to your coworker’s email client software.
What will you recommend to your supervisor?

a. Enable the firewall.
b. Enable the spam filter.
c. Enable port forwarding.
d. Enable MAC filtering.

2. Enable the spam filter.

Explanation:

If Spam filter is enabled then it will block all unwanted emails. This should be the first step you should be doing if you witness unwanted advertisements or spam emails. SPAM means unsolicited bulk emails. Most of marketing emails or phishing emails or unsubscribed emails or unwanted emails will be sent through different ways. Bot can be used to send such emails or bulk email software can be used as well. These applications will use the proxies and bots which will mask the originating information.

If the user configures spam filter in such a way that unsolicited emails will be blocked. There are many ways to configure spam filters.  Normally spam filters will looks for certain criteria on which it makes the judgments. List based filtering and Content based filtering are most commonly used to block such emails. Some of the methods are as below.