Hi guys dont worry, I figured it out. I dont know whether its a bug or it suppose to work like that.
I was using my MAPI profile name during the installation of admin service but i provided the defalut name of MAPI profile during the installation of admin services and it works
Defalut MAPI name "BlackBerryServer"
I checked on the bb forum, some of the other folks were facing the same issue and they use the defalut name and it worked for them
Any way Thanx guys for the info....