Solaris

This error comes from the AIX box.
There, where is the .rhosts file located? What perms does it have?

Check what is your AIX donig to reslove names (/etc/netsvc.conf)).
Perhaps it's just a spelling mistake on AIX's /etc/hosts!

I checked the file /etc/netsvc.conf on AIX box, it looks fine.

AIX#more /etc/netsvc.conf
hosts=local,bind

Also .rhosts file is present in the user's home directory with 600 as a permission.

Even the entries for Solaris box are properly added in /etc/hosts file on AIX box.

Are both servers on the same network? If not, is there any firewall/router doing NAT between them?

Nothing like firewall at all. Both the system are on the same network & I am able to telnet to each of the system.

Solaris 10 System ----- From here I am trying to run the rsh commands

AIX System ----------- Remote system

.rhosts & /etc/host.equiv is configured properly on AIX system.

I am able to get the remote shell of AIX from Solaris 10 system;

Solaris 10#rsh AIX-Host ----Gives me the remote shell of AIX & also able to run the commands of AIX on remote shell.

Solaris 10#rsh AIX-Host date ---- It fails with an error ;
" rshd:0826-826 The host name for your address is not known "

Its look like strange problem, because I am able to get the remote shell, but not able to run the remote commands from Solaris 10 system.

I think something needs to be done at AIX side....

I have checked /etc/nsswitch.conf on Solaris 10 Box...its fine.

Can somebody suggest me what could be the problem...???

Nothing else comes to my mind...
Could you post the contents of /etc/hosts ~/.rhosts and the o/p of "ifconfig -a" on both servers?

I can't put the output of /etc/hosts, $HOME/.rhosts files.

Anyone has any clue where am I going wrong for this issue...???

OK. With the info you provide, to me, is a name resloution question, then.
You cannot pretend to get help without giving us info.