GetDomainAllUserCurrentSize()
From Rackspace Email & Apps API
This function will report the amount of space used by each mailbox in a domain. This information is updated nightly. Size is given in MB.
Input Parameters
Three strings, one result array:
Administrative username, Administrative password, Domain name,
Size array (as is: list[0]="user1, 243423", list[1]="user2, 3423", ...)
Return Values
If successful, the return value of the function will be 1.
Consult the Result Code Table for a list of result codes and their meaning.