Have you tried masks of the form muse!*Zaku-Rogu@*.dsl.snantx.swbell.net? Or even muse!*Zaku-Rogu@*.swbell.net? Unless you're very lucky, the dynamic part of the mask might change, so it's never a good idea to specify it. And the ~ part changes depending on that user's IdentD, so you have to wildcard it out too.
