Avoid deletion of shared folders (was patch lmtptarget annotation in 2.4)

Hello,
in cyrus-imapd-2.4.X we used the patch from 
https://lists.andrew.cmu.edu/pipermail/info-cyrus/2010-May/033006.html
to avoid the deletion of a shared folder which is an lmtp target.

Is this or a similar approach available in newer cyrus-imapd versions (3.0 … 
3.4)?

Thanks
Frank

-- 
Frank Richter
Chemnitz University of Technology, Germany


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