You could monitor the message tracking logs for deliveries into the mailboxes from each sender, and when some pre-determined counter is reached, trigger an email?
From: bounce-9480425-8066...@lyris.sunbelt-software.com [mailto:bounce-9480425-8066...@lyris.sunbelt-software.com] On Behalf Of Paul Cookman Sent: 27 January 2012 11:33 To: MS-Exchange Admin Issues Subject: Email misuse alerts. Any ideas of a way to get alerted if a threshold of emails is reached between two users? --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com<mailto:listmana...@lyris.sunbeltsoftware.com> with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe exchangelist