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How to I stop spam mail to an non existing mailbox in MS Exchange 5.5

I am running MS exchange 5.5 SP4 server. I get a lot of spam mail to an non existing account: mailbox@banctec.no
As the mail administrator all these spams are beeing sent to my account with this message: "The following recipients did not receive the attached mail. Reasons are listed with each recipient:
<mailbox@banctec.no> mailbox@banctec.no
MSEXCH:IMS:BancTec:NORWAY:TIGER 0 (000C05A6) Unknown Recipient
The message that caused this notification was:"

How can I get rid of these spam mailes? I don't want to create a post box for this adress, because than the server hard disk will be full in two days.

Thanks!

\\Morten

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Exchange_Admin

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meinang

ASKER

Yes, it helps, but from last weekend my server is beeing attacked with a lot of mail sent to all kind of random names to our domain. There is no way I can add all these names to the SMTP e-mail name. Any idea how I can stop all these mailes? It is about 10 - 20 mailes every hour just now and I have discovered random problems last weeks causing internal and external mail disapearing.

Thanks!

\\Morten

Exchange_Admin

Install a 3rd part spam application.
Several have free trial periods to test them out.
One is GFI Mail Essentials. It has a 60 day trial period.
www.gfi.com

Symantec also has a product too.

This is just 2 of many. Ask people which one to use and you will get many different answers.