Hi Im receiving the below error.. whenever SSIS package job fails ...any one can help me to find out whats the reason might be....

Execute Package Utility Version 9.00.3042.00 for 64-bit Copyright (C) Microsoft Corp 1984-2005. All rights reserved. Started: 2:35:00 PM Error: 2009-06-09 19:55:07.13 Code: 0x00000002 Source: POP Mails Description: The script threw an exception: Unable to write data to the transport connection: An existing connection was forcibly closed by the remote host. End Error DTExec: The package execution returned DTSER_FAILURE (1). Started: 2:35:00 PM Finished: 7:55:07 PM Elapsed: 19205.9 seconds. The package execution failed. The step failed.