Another great post by our guest blogger Richard Perlman:
I hacked at the VistaICM email process and here is what I found:
Part 1: The information for the email is sent, via HTTP, to outgoing.in2myhome.com. So, If you are running a local DNS server, you can enter a record for that host/domain and resolve it to some other HTTP server.
Part 2: The information is sent as a GET request. I.e. It’s ALL in the URL. Really simple (and insecure). For example, here is an “Armed” notification:
So, all that would need to be done is to write a simple cgi-bin script to handle requests for /email.aspx to parse the GET request and create an email or do whatever you wanted.