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Net Send on Windows 2003 Server

I have 4 Windows 2003 Servers running and I create a cmd file to run ntbackup every day
When the backup starts I send a message to the domain letting them know the backup is about to begin.

I have a mix of Win 7 Vista and XP stations they all get the message

My question is on the Windows 2003 servers I get the same message presented twice (2 times) for each net send

here is the net send command

net send /domain:our Server BackUp Starting

fairly simple I would think

Any thought on why it would display twice on the servers?

On all workstations it only shows once

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2 Solutions
From my knowledge net send /domain sends out a broadcast NetBIOS so if a computer/server has multiple NetBIOS supported interfaces they may receive it twice. (e.g. usually servers have dual network connections) I'm not 100% sure on that but i'm fairly certain that is the reason.
This KB article mentions how net send operates

"For example, a computer that runs Windows with NWLINK, TCP/IP, and NetBEUI would send three broadcast messages to domain <00>. A user in the domain that runs all three protocols would receive three messages. "
InserachofAuthor Commented:
i was thinking the same thing wanted to check anyhow
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