ModifyAlias()
From Rackspace Email & Apps API
This function will update an alias on the domain. Keep in mind that aliases are different from mailboxes in that an alias has no anti-spam features. Please note that the list provided here will completely replace any list that had been associated with the alias. Use GetAlias() to see what list is currently associated with an alias.
Input Parameters
Five strings:
Administrative username, Administrative password, Domain name, Alias name, List of email addresses to receive alias email (command delimited)
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.