You need to do a manual uninstallation of the WFBS MSA:
- On the computer when the MSA is installed, stop the following services:
- Trend Micro Messaging Security Agent EUQ Monitor
- Trend Micro Messaging Security Agent Master Service
- Trend Micro Messaging Security Agent Remote Configuration Server
- Trend Micro Messaging Security Agent System Watcher
- Remove the ScanMail transport agent from Exchange 2010/2007:
- Click Start > All Programs > Microsoft Exchange Server 2010/2007 > Exchange Management Shell.
- Type the following commands:
Uninstall-TransportAgent -Identity "ScanMail SMTP Receive Agent"
Uninstall-TransportAgent -Identity "ScanMail Routing Agent" -
Type "Y".
- Execute this command to make sure that the ScanMail transport agent has been removed:
get-transportagent