Solution : https://service.sap.com/sap/support/notes/643718 (SAP Service marketplace login required)
Key words :
sxmspmast-ets index, sxmspmast database table, terms performance optimization, deleting archived messages, deleting messages, archiving messages, note improves, archiving-relevant, deletion reason, exchange infrastructure
Related Notes :
679352 | XI2.0 Support Package 04 - List of most important changes |