On my Exchange 2000 server under the Protocols / SMTP / Default SMTP Virtual Server / Current Sessions, I occasionally find an unknown IP (The IP is listed but it's unknown to me). Sometimes there will be two or three listed. They have been logged on for a various times, but sometime over many hours.
What do these entries represent? (unauthorized access? We don't have an open relay. ???)
Thanks
What do these entries represent? (unauthorized access? We don't have an open relay. ???)
Thanks