Sets an upper limit quota on a per mailbox basis.
An IMAP stream returned by imap_open().
The mailbox to have a quota set. This should follow the IMAP standard format for a mailbox: user.name.
The maximum size (in KB) for the
This function is currently only available to users of the c-client2000 or greater library.
imap_stream must be opened as the mail
administrator, other wise this function will fail.