How can an administrator confirm that a problem with email delivery is related to user settings?

An administrator can confirm that a problem with email delivery is related to user settings by sending test emails to different users. This approach is effective because it helps to identify if the issue is isolated to a specific user or if it affects multiple users. By including various users in the test, the administrator can determine whether the settings of particular users are interfering with email delivery.

If some users receive the test emails while others do not, it indicates that the settings for those users not receiving the emails may need to be reviewed and adjusted. This method isolates the problem to user-specific settings rather than systemic issues affecting the entire email system.

In contrast, checking the email's export log or reviewing email statistics alone would not provide conclusive evidence regarding user-specific settings, as these methods may show broader trends rather than pinpoint individual user configurations. Analyzing the content of the emails sent also does not help ascertain whether the problem lies within user settings, as it focuses on the messages' content rather than the delivery settings or permissions associated with specific users.