This is available upstream in Dovecot, so not a bug there.
** Changed in: dovecot
Status: New = Invalid
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https://bugs.launchpad.net/bugs/1235401
Title:
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: dovecot (Ubuntu)
Status: New = Confirmed
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This bug is tagged needs-packaging which identifies it as a request for
a new package in Ubuntu. As a part of the managing needs-packaging bug
reports specification,
https://wiki.ubuntu.com/QATeam/Specs/NeedsPackagingBugs, all needs-
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