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Re: Exchange SMTP Hole? Nov 11 2003 04:13PM
Gerald Eisenhaur (GEisenhaur Eisenhaur com)
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Hello Tom,

What your explaining sounds like a SMTP AUTH attack.

By default Exchange allows relaying for authorized users. So spammers
have started to brute force logins to relay spam.

Here are some articles that might help a bit
http://www.winnetmag....

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