I think I finally have the broker set up correctly. I have a bunch of
entries on the transmission queue and would like to clear them out. I tried
the following and it works to a point but doesn't work on older
conversations. I see the conversation on the queue but when I try and ...

I am setting up service broker to replace a batch job. I got everything set
up and ready to go. When I did my first message test I get broker not
enabled in the transmission_queue. So I found this statement
Alter database xxx set Enable_Broker With Rollback Immediate.

I read the Service Broker Tutorials, which have a description of using
Windows authentication for "a conversation between instances". And I read the
book, Pro SQL Server 2005 Service Broker, which has a description of using
certificate-based authentication for such a conversation ...