On the client system that won't run, check to see if the 'inetd' process is running
ps -ef | grep inetd
If not, then start it
inetd -c
You said that you checked connection using a 'telnet' to port 5555, did you do this in both directions, and did you try it using the IP addresses
From command prompt on the cell manager
telnet [client hostname] 5555 Do not include the [ ] marks
telnet [client IP address] 5555
and see if just the 'telnet' will work
telnet [client hostname] Do not include the [ ] marks
telnet [client IP address]
From the command prompt on the client machine
telnet [cell manager hostname] 5555 Do not include the [ ] marks
telnet [cell manager IP address] 5555
and see if just the 'telnet' will work
telnet [cell manager hostname] Do not include the [ ] marks
telnet [cell manager IP address]
