IMAP Literal should temporary stream to disk on to big data
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                 Key: JAMES-1191
                 URL: https://issues.apache.org/jira/browse/JAMES-1191
             Project: JAMES Server
          Issue Type: Bug
          Components: IMAPServer
    Affects Versions: 3.0-M2
            Reporter: Norman Maurer
            Assignee: Norman Maurer
             Fix For: 3.0-M3


At the moment the whole raw imap request is held in memory before it is 
dispatched to the processor (when the data is ready). This can lead to heavy 
memory usage and in theory allow a DOS attach by specify a very big literal and 
then just write garbage to the server. To prevent this we should stream the 
data to disk if a configurable threshold is hit.

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