Discussion

Not all Exchange services are required on a front-end server, your Frontend Server you only have the following services running and other service may be stopped.

• HTTP-Service
• SMTP-Service
• Exchange System Attendant
• Exchange Routing Engine

You really do not need to run the Exchange Information Store, because there should not be any public folders or mailboxes on your Frontend Server. The best practice is to dismount and delete all databases on your server and then disable the Exchange Information Store Service.