Currently the only way to control what is indexed is to not send anything with fields that could be indexed. Ugh. Loggly support has been good to work with on increasing your limit of indexed fields, but you cannot get a list unless you ask them. So my feature request is to allow users to report on their indexed fields and set priorities of fields that must be indexed. I already have that sent in as a request from a support ticket to Loggly. And I think miguelalho has a very similar discussion about selecting the index properties. I tagged this as a feature request, as I noticed I cannot create them for loggly directly.