i tried to workaround for this with

 

@@ -58,6 +59,13 @@
                if [ $exit_code -ne 0 -a $exit_code -ne 130 ]; then
                    echo "Unexpected error: doveadm expunge '$u'"
                    echo "Exit Code: $exit_code"
+                   if [ $exit_code -eq 68 ]; then
+                       if ! [ "$(ls -A /var/spool/mail/${u}/mailboxes/${mbx})" ]; then
+                           rmdir "/var/spool/mail/${u}/mailboxes/${mbx}"
+                       else
+                           echo "Error: Expected directory is empty!"
+                       fi
+                   fi
                    rc=1
                fi
            done

 

but this empty directory is also replicated and would be recreated.