Exchange 2007 Environment Monitoring – Whats best??

Hi all,

I’ve been tasked with finding a single efficient monitoring and alerting tool for our Exchange 2007 environment that will allow exchange admins to proactively manage the newly installed environment, address performance issues in a more timely manner and use quantitaitive data to determine future expansion of the environment.

I’ve googled a bit but there doesn’t seem to be much out there. Any suggestions? We have aprox 50,000 users….so it will have to be enterprise standard.

Thanks,
Rob.