>From http://wiki.dovecot.org/PasswordDatabase/PAM#head-
71368e6eb385969ff27fcda066555b9c05822c09:
Limiting the number of PAM lookups
Dovecot v1.1+ or v1.0 with blocking=yes enabled uses auth worker
processes to do PAM lookups. Usually PAM is used to do only a single
lookup in a process, so this may cause memory leaks in PAM plugins or
maybe other problems. If you notice that PAM authentication stops
working after some time, you can limit the number of lookups done by the
auth worker process before it dies:
# v1.1+: Set to non-zero to limit the number of lookups
auth_worker_max_request_count = 0
Note that this applies to all lookups, not just PAM lookups. So for
example if you've configured Dovecot to use both PAM and MySQL, both of
the lookups are done in the same auth worker processes and both of them
are counted as requests.
** Changed in: dovecot (Ubuntu)
Status: Incomplete => Confirmed
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Dovecot-auth doesn't close sockets
https://bugs.launchpad.net/bugs/503008
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