Agent.GetAgentAsyncContext Method
When overridden in a derived class, the GetAgentAsyncContext method gets a AgentAsyncContext object to mark the executing event handler to execute asynchronously.
Namespace: Microsoft.Exchange.Data.Transport
Assembly: Microsoft.Exchange.Data.Transport (in Microsoft.Exchange.Data.Transport.dll)
Syntax
'Declaration
Protected Function GetAgentAsyncContext As AgentAsyncContext
'Usage
Dim returnValue As AgentAsyncContext
returnValue = Me.GetAgentAsyncContext()
protected AgentAsyncContext GetAgentAsyncContext()
Return Value
Type: Microsoft.Exchange.Data.Transport.AgentAsyncContext
When overridden in a derived class, the GetAgentAsyncContext method returns a AgentAsyncContext object that is used by an asynchronous event handler.
Remarks
Thread starvation can occur if the code that is executing asynchronously takes a long time to finish. Therefore, it is important to monitor the thread pool and reuse threads that are allocated to instances of your agent.
Warning
If thread starvation occurs because of an asynchronous agent, the Simple Mail Transfer Protocol (SMTP) service may stop responding to incoming connection attempts.
You should log an error to the event log if thread starvation occurs. Logging the error to the event log enables administrators and applications that monitor the event log to find and take action on the thread starvation.