I am trying to Implement a client side service which exchange data with exchange server, so i'm using gSoap here for this. Till now i'have done following:

a) create account on portal.office.com/Home so i've loginID and password for this.

b) Download a WSDL file from outlook.office365.com/EWS/services.wsdl using login with same credentials which i have in step (a).

here i want to know that if i want to access any other custom exchange server to exchange data with their different account credentials, then would i need other WSDL file corresponding to that exchange server, or can i do that with the previous WSDL file.

In other words, does WSDL file change with server to server, or all exchange server use same WSDL file. since at  w3.org/TR/wsdl.html i found that "WSDL is a language for describing web services and how to access them." So does it also depend on "from where to access them" (endpoint).

since gSoap use WSDL file to generate proxy, xml and other some header and source files, which helps to implement a client code to use that web service.

Please help me, Thank you!! :)