An administrator receives a call from a user who is unable to receive email. After checking the workstation and email settings the administrator is still not able to determine the problem. Which of…

Creating an action plan should occur before or during troubleshooting, not after troubleshooting has already been attempted and failed to find a solution.

Escalating the issue passes the unresolved problem to a technician or team with greater expertise or access, which is the appropriate action when initial troubleshooting has failed. This follows standard help desk tiered support methodology and ensures the user gets a timely resolution without further delay.

Rebooting the mail server is a disruptive action that affects all users and should not be performed without proper diagnosis confirming the server is the cause, and without change management approval.

Documenting the solution is only appropriate after the issue has actually been resolved - there is nothing to document yet since the problem remains unsolved.