Answer:
Tracy's first line of defense against this problem coming back should be to use email filtering. Email filtering is the process of sorting and filtering incoming emails based on things like sender, subject, content, attachments, and other factors so that unwanted or suspicious emails can be found and blocked. These can include spam, phishing, malware, and other types of malicious emails that overload the email server and cause it to crash.
By turning on email filtering, Tracy can help stop unwanted emails from getting into the email server and causing problems. She can also change the filtering settings to stop emails from senders or sites that are known to send spam or other unwanted messages from getting through. Tracy might also change the email filtering settings often to keep up with new spamming techniques and types of threats.
Email filtering is often the best first line of defense against too much email and spam attacks, even though user education, MAC filtering, and firewalls can also help stop spam and other problems related to email.