* **db_loglimit_index_high** - Number of index rows to be logged anyway (for any index)
* **db_log_index_blacklist** - Blacklist of indexes that shouldn't be watched
* **dbclean** (Boolean) - Enable the automatic database cleanup process
+* **dbclean-expire-days** (Integer) - Days after which remote items will be deleted. Own items, and marked or filed items are kept.
* **default_service_class** -
* **delivery_batch_count** - Number of deliveries per process. Default value is 1. (Disabled when using the worker)
* **diaspora_test** (Boolean) - For development only. Disables the message transfer.