agentName = "HeaderAnalysisAgent"; $agentFactory = "Microsoft.Exchange.Transport.Agent.HeaderAnalysis.HeaderAnalysisAgentFactory"; ...

$agentName = "HeaderAnalysisAgent";              $agentFactory = "Microsoft.Exchange.Transport.Agent.HeaderAnalysis.HeaderAnalysisAgentFactory";              $agentAssembly = ($RoleInstallPath + "TransportRoles\agents\HeaderAnalysis\Microsoft.Exchange.Transport.Agent.HeaderAnalysis.dll");              $agent = get-transportagent -Identity:$agentName;              if ($agent)               {                  uninstall-transportagent -Identity:$agentName              };              install-TransportAgent -Name:$agentName -TransportAgentFactory:$agentFactory -AssemblyPath:$agentAssembly;              if ($agent.enabled -or ! $agent)               {                   enable-transportagent -Identity:$agentName               };