RFC_ERROR_COMMUNICATION Error message.

Problem: E-commerce applications went down due to some errors.
Below is the Error message from Log:
Message seen in log: Error message is: Group Internet not found. RFC error connecting to message server host failed. NWD2CRM3 server. Weve seen this 9/11/06; 1/16/08(day of Prod patches); 2/25/2008 Seems like a problem with the J2E layer talking to the CRM layer. We see this error when the J2E layer is trying to talk to the CRM/Unix back end and cannot. Seems as though the Web servers (eComm front end) were up and OK, backend CRM / UNIX box was fine, just the J2E layer unable to speak with CRM layer.
Root Cause and resolution : At this point in time we are unable to determine the exact cause of the problem.
Resolution was to shutdown all the connected servers and bring them back up in a sequential order.
Below is the error message that occured:
RfcException:
     message: Connect to message server host failed Connect_PM TYPE=B MSHOST=nwd2crm3.corp.analog.com GROUP=Internet R3NAME=PC1 MSSERV=sapmsPC1 PCS=1
LOCATION CPIC (TCP/IP) on local host with Unicode
ERROR     Group Internet not found
TIME      Mon Feb 25 13:41:03 2008
RELEASE   640
COMPONENT LG
VERSION   5
RC        -6
MODULE    lgxx.c
LINE      3526
DETAIL    LgIGroup
COUNTER   12
     Return code: RFC_FAILURE(1)
     error group: 102
     key: RFC_ERROR_COMMUNICATION
If any one has come across such an error please give the resolution for the same.

Hi Bhavik,
I am facing this problem.
I want to try ur suggested option. But in the JCO connection parameter list, where do i need provide this values.
I am providing below parameters for connection:
client=800
user=isauser
passwd=...
lang=EN
mshost=IP address
r3name=P01
group=Sales/Purchasing
For the above parameters i am getting below error when i try to run my program
om.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server failed
Connect_PM MSHOST=<IP address>, R3NAME=P01, GROUP=Sales/Purchasing
LOCATION CPIC (TCP/IP) on local host
ERROR service 'sapmsP01' unknown
Please reply me
Thanks and regards
Lakshmikanthaiah

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