RM connection forcibly closed with Exchnage host

RM jobs are constantly failing with error below and only for Exchange 2007 hosts Exchnagerunning on VM 4..

ITSSSSN06 000006 ERROR:read has failed with error number 10054 as follows:An existing connection was forcibly closed by the remote host..

2010 10 29 00:05:50 ITSSSSN06 000006 ERROR:write has failed with error number 10054 as follows:An existing connection was forcibly closed by the remote host..

2010 10 29 00:05:50 ITSSSSN06 026582 ERROR:An unexpected internal error occurred: IR::XML::Message::write - socket write failed 2010 10 29 00:05:50 ITSSSSN06 000115 ERROR:Connection to host chexcms01 failed.

2010 10 29 00:06:50 ITSSSSN06 000006 ERROR:read has failed with error number 10054 as follows:An existing connection was forcibly closed by the remote host..

2010 10 29 00:06:50 ITSSSSN06 000006 ERROR:write has failed with error number 10054 as follows:An existing connection was forcibly closed by the remote host..

2010 10 29 00:06:50 ITSSSSN06 026582 ERROR:An unexpected internal error occurred: IR::XML::Message::write - socket write failed 2010 10 29 00:06:50 ITSSSSN06 000115 ERROR:Connection to host chexcms01 failed.

2010 10 29 00:05:50 ITSSSSN06 000115 ERROR:Connection to host chexcms01 failed.

2010 10 29 00:06:50 ITSSSSN06  INFO:Replication failed on attempt 1. Job will be retried after 60 seconds.