RE: How to prevent unauthorized use of my SMTP server?
- From: "Alex Gonzalez" <AGonzalez@xxxxxxxxxxxxxxxxxxx>
- To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
- Date: Mon, 8 Aug 2005 13:46:44 -0400
Go to the SMTP virtual server and go under relay and make sure the radio button
is checked "only these servers may relay".
________________________________
From: Nicolas Verhaeghe [mailto:nicolas@xxxxxxxxxxxxxxxxxxx]
Sent: Mon 8/8/2005 1:45 PM
To: [ExchangeList]
Subject: [exchangelist] How to prevent unauthorized use of my SMTP server?
http://www.MSExchange.org/
How do I make sure that my SMTP server is not open to the rest of the
world?
It seems that I need to have port 25 opened in my firewall to allow
incoming mail, but when I do that, don't I risk letting outsiders use my
SMTP to send their spam?
How can I monitor this activity and also how can I make sure that no
non-authenticated users use my Exchange server?
Thanks a lot!
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