Got it solved at last. The problem was in the domain account, it cannot be named mqm (no manual says this), I created a new account with a different name and everything is up and running ok
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As Peter said I am in one of those cases where it is necessary to create an domain account (because the client does not allow the use of local accounts)
I have a problem Starting a Queue Manager with amqmdain in a Windows 2003 Machine. This Windows is inside a Domain and I have created the required acount mqm in the domain and have configured ...