Per-group (binding) Metrics, 188.8.131.52.4.1.19552.1.3
These act as a supplement to the MTA-MIB defined group statistics, so that the stat watcher can record active/delayed queues.
G+1 is the MTAGroupIndexID (see RFC 2789 MTA MIB and “Determining the ID for an MTAGroupIndexID”). The metrics are as follows:
184.108.40.206.4.1.195220.127.116.11.G+1: counter, active queue size
18.104.22.168.4.1.19522.214.171.124.G+1: counter, delayed queue size
126.96.36.199.4.1.195188.8.131.52.G+1: counter, failed message count
184.108.40.206.4.1.195220.127.116.11.G+1: string, binding name (matches MTA MIB)