Hi,

I'm trying to get a list of mailing lists from the campaign module but I get error 500 back and some HTML.

My API call is:

       https://campaigns.zoho.com/api/v1.1/getmailinglists?resfmt=JSON

I have set a header:

      Authorization: [my_api_access_token]

Any ideas what could be going wrong?

Thanks,

Colin.