GetUserMailVacation()
From Rackspace Email & Apps API
This function will return the string currently configured to be the user's vacation message and will report whether or not the vacation message is active.
Input Parameters
Four strings one result string, one result integer:
Administrative username, Administrative password, Domain name, User name,
Vacation message, Vacation message on (int, 0=on, 1=off)
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.