The Dovecot Connector App cleans up users deleted in Univention Nubus.
In order to use the App, you need a remote Dovecot installation. Typically, this remote server is not a UCS system.
There are two prerequisites for this App to work: The remote Dovecot installation needs to allow access to the doveadm port and you probably want to tunnel this plain HTTP connection through an encrypted tunnel.
Test with UCS now Download UCS and activate Dovecot Connector directly from the App Center.
Further information 
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