Over the past month, we've had a couple of users get mass spammed with undeliverable messages. They arrive from any of the following: postmaster@, MAILER_DAEMON@, Mail Delivery System, Mail Delivery Subsystem, System Administrator, among others. They arrive in bunches by the hundreds.
We're running Exchange 2000 on Win2k Server behind a Symantec FW. Any help would be appreciated.
Attached are some samples of the emails with their associated headers.
Thanks,
Dan
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