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troubleshooting Question

Logs to turn on to determine if someone outside the company is using our Exchange SMTP

Avatar of andrefortier7
andrefortier7 asked on
8 Comments1 Solution218 ViewsLast Modified:
We have MS Exchange Server 2003 SP2 and I am sometimes wondering if an outside hacker is using our Exchange Server to send messages from.

What logging can I turn on in Exchange to determine if this is happening?