Hello, 

I was trying to give access to "Domain User", So that it can access Queue manager and its object.

For that, Firstly I made this domain user a part of "mqm" group which is local group on Linux machine.

but still this domain user is "Not authorized" to access queue manager. {error come when running "runmqsc command"}

Starting MQSC for queue manager PXXXXXX1.
AMQ8135E: Not authorized.

Hence, I tried to provide certain permission (using setmqaut) to this domain user to access QM, but i am getting error as "principal or group name was invalid".

AMQ7026E: A principal or group name was invalid.

What can be done to allow domain user to access the QM. Kindly suggest.

Thanks in advance!

Regards

Akash K

Try setting up a user without a space in it. Then find Morag's blog about authorizing without giving group mqm access.

If need be you can create a chlauth record proxying the user with the space to a user without a space...