dovecot - Feb 2018 - 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/
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