Deny usage of the smtp server

Hello,

I have Exchange 2000 with the SMTP port open from the outside (for getting mails), how do I stop outside users from using my SMTP for mailing?

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meirulexiteAsked:
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inbarasanConnect With a Mentor Commented:
Dear meirulexite,
I think you are talking about how to block Open relay if yes then refer this article http://support.microsoft.com/kb/324958

May be some more experts will give some more info if i had missed any

Cheers!
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rakeshmiglaniCommented:
In addition to the above article, you can also check the following

http://www.amset.info/exchange/smtp-openrelay.asp
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