FTP Receive Adapter fails to publish message if the receive pipeline processing time exceeds the server timeout value

Problem

Pipeline processing is performed on all messages that are received by the FTP Adapter. If the time taken to complete pipeline processing for messages received by the FTP connection times out then the message will not be published to the Messagebox and errors similar to the following may be generated in the Application log of the BizTalk server:

other

Event Type:Error
Event Source:BizTalk Server 2006
Event Category:BizTalk Server 2006 
Event ID:5719
Date:8/30/2006
Time:12:08:55 PM
User:N/A
Computer:BIZTALKSERVER
Description:
There was a failure executing the receive pipeline: "Microsoft.BizTalk.DefaultPipelines.PassThruReceive, Microsoft.BizTalk.DefaultPipelines, Version=3.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Source: "Pipeline " Receive Port: "ReceivePort1" URI: "ftp://FTPSERVER:21/*.txt" Reason: Unable to receive the file "file.txt   " from the FTP server. 

and

other

Event Type:Warning
Event Source:BizTalk Server 2006
Event Category:BizTalk Server 2006 
Event ID:5740
Date:8/30/2006
Time:12:08:56 PM
User:N/A
Computer:BIZTALKSERVER
Description:
The adapter "FTP" raised an error message. Details "Unable to receive the file "file.txt   " from the FTP server. ".

Cause

The FTP Adapter attempts to delete the original copy of the message on the source FTP Server before it publishes the message to the Messagebox. If the connection has timed out then the FTP Adapter cannot delete the copy of the message on the source FTP Server.

Resolution

Use one of the following methods to mitigate this problem:

1. Increase the connection timeout value. Set the Idle timeout value on the FTP server to be at least the amount of the time it takes to process the file.
   
2. Use the Temporary Folder feature on the receive location. In this case, the FTP adapter copies the file to the temporary folder (typically local disk). The time to copy the file to local disk is less than the time it takes run the message through pipeline and persist it to the message box which effectively reduces the idle time.