What is a key step to troubleshoot delivery issues in Mimecast?

Reviewing logs and analyzing bounce messages is an essential step in troubleshooting delivery issues in Mimecast because it provides critical insights into what is happening during the email delivery process. Logs contain detailed information about email transactions, including the sender, recipient, timestamps, and any errors that might have occurred. By analyzing these logs, technical specialists can identify patterns or specific problems that hinder proper delivery.

Bounce messages specifically indicate why emails were not delivered, offering key context such as whether the recipient mailbox was full, if the email was rejected due to policy violations, or if the address was incorrect. Understanding these details is crucial for diagnosing the root causes of delivery failures and allows for targeted remediation.

The other options may contribute to improving overall email functionality or user experience, but they do not directly address the technical aspects of troubleshooting delivery issues. Conducting user training sessions focuses on educating end-users rather than resolving technical problems. Increasing email storage limits addresses potential capacity issues but doesn't help in diagnosing the specific reasons for delivery failures. Updating user passwords can enhance security but is unrelated to email delivery troubleshooting.