/usr/share/doc/ is in postfix-cluebringer-webui 2.0.10-1.
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/usr/share/doc/postfix-cluebringer-webui/
/usr/share/doc/postfix-cluebringer-webui/examples/
/usr/share/doc/postfix-cluebringer-webui/examples/postfix/
/usr/share/doc/postfix-cluebringer-webui/examples/postfix/mailboxes.cf
/usr/share/doc/postfix-cluebringer-webui/examples/postfix/alias_to_mailbox_map.cf
/usr/share/doc/postfix-cluebringer-webui/examples/postfix/relay_domains.cf
/usr/share/doc/postfix-cluebringer-webui/examples/postfix/schema/
/usr/share/doc/postfix-cluebringer-webui/examples/postfix/schema/postfix.tsql
/usr/share/doc/postfix-cluebringer-webui/examples/postfix/transports.cf
/usr/share/doc/postfix-cluebringer-webui/examples/postfix/distribution_lists.cf
/usr/share/doc/postfix-cluebringer-webui/examples/postfix/aliases.cf
/usr/share/doc/postfix-cluebringer-webui/examples/postfix/main.cf_snippet
/usr/share/doc/postfix-cluebringer-webui/examples/postfix/quotas.cf
/usr/share/doc/postfix-cluebringer-webui/examples/postfix/mailbox_domains.cf
/usr/share/doc/postfix-cluebringer-webui/examples/postfix/bcc.cf
/usr/share/doc/postfix-cluebringer-webui/examples/httpd/
/usr/share/doc/postfix-cluebringer-webui/examples/httpd/cluebringer-httpd.conf
/usr/share/doc/postfix-cluebringer-webui/TODO
/usr/share/doc/postfix-cluebringer-webui/copyright
/usr/share/doc/postfix-cluebringer-webui/templates/
/usr/share/doc/postfix-cluebringer-webui/templates/cluebringer-webui.conf
/usr/share/doc/postfix-cluebringer-webui/WISHLIST
/usr/share/doc/postfix-cluebringer-webui/AUTHORS
/usr/share/doc/postfix-cluebringer-webui/README.Debian