Scanning Displays information on the total items scanned by MSME and the average time taken to scan all items, since the last reset. Table 1: Option definitions Option Definition Average Scan Time (milliseconds) Specifies the average time taken by MSME to scan all the email messages that reach the Exchange server. To understand how this is calculated, let's consider this example where: T = Total time taken to scan all emails after the last MSME Service restart. N = Total number of emails scanned after the last MSME Service restart. then, Average scan time = T/N (in milliseconds) Total Scanned Total number of email messages scanned, since the last time the statistic counters were reset.