What does the queue configuration look like?
The queue is defined as follow:
During the last week before AS 7.0.1 was released, we decided that any relative JNDI names (i.e. without any explicit namespace) would be bound of java:/. This applied to JMS bindings too. So in your case, the queue/besstellqueue jndi name translates to java:/queue/bestellqueue. You can either change the MDB to use this (new) jndi name or you can change your queue configuration to explicitly specify the (previous) namespace:
Thanks for your help. Now everything works as excpected.