SQL Plug-in: Add a database workflow

I'm trying to add a database object to Orchestrator's SQL plug-in's inventory using the Add a database workflow.  It fails with the following exception:  com.vmware.o11n.plugin.database.DatabaseException: com.microsoft.sqlserver.jdbc.SQLServerException: Login failed for user 'domainname\username'. (Dynamic Script Module name : addDatabase#8).

I suspect the problem is with the Connection URL.  I've tried jdbc:sqlserver://servername.domainname.net:1433;databaseName=master and jdbc:sqlserver://servername.domainname.net:1433.

I'm new to Orchestrator so its possible I'm missing something simple.  The SQL plug-in is installed.  I know the account I'm using has rights to the database because I can log into SQL Studio Management and run a query against the master database.  Any ideas?