imap-login director is not restarted after each auth request

Hi imap-login by default in mail server is restarted after every login request keeping security in mind to avoid leak of critical data. But in a director config, the imap-login director process is not restarted on each auth request. Can somebody explain why this design decision is taken?

-- Kalyanasundaram http://blogs.eskratch.com/ https://github.com/kalyanceg/