Knowledge base
ConnectionsMetricThe number of simultaneous connections: now, the maximum and the allowed limit, in both directions.Name cacheMetricThe number of names in the cache and the number of queries waiting for a response; separately, active queries.Queue depthMetricRecipients, recipient domains and kilobytes in the queue.Traffic countersMetricRecipients, messages and kilobytes for all time, for the last hour and for the last minute.Spool filesMetricThe number of spool files in use.Spool reading at startupMetricThe share of the spool read completed at startup, in percent.Spool capacityMetricHow many recipients the spool holds now and how many it can hold at most.Throughput peaksMetricThe highest values per hour and per minute — recipients, messages, kilobytes.Latency on receptionMetricThe number of submissions and the time by reception stage.