exchnage 2007

i have placed a IIS SMTP server in my DMZ to relay mail from my exchange 2007 server
everything runs perfect , i can send and receive mail without any issues

problem-when i run some relay tests the emails do not get relayed, BUT they get dropped in my exchange servers dropped directory
i configured the SMTP to only relay mail from my exchange server
what do i need to do to stop the emails from reaching the exhange server at all
i do not want spamers to take advantage of this
dano992Asked:
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viveksahuCommented:
Hi

I was suffering from this problem too

here is the solutions: (Do one of them)

1- Install the Antispam script that comes with Exchange 2007 to setup the AntiSpam module in Exchange Console and then block messages sent to users not listed in your address list

2- This one is easier , Create a transport rule that drops emails sent from "outside" your organization to "outside" your organization

For configuring no. 2 follow this....

for number 2 solution:

   1. open exchange 2007 console and go to "Organization Configuration" and then to "Hub Transport"
   2. Select "Transport Rules" tab
   3. From the "Action Pane" on the right select "New Transport Rule"
   4. Type any name and any comment and press next
   5. From the conditions window select "From users inside or outside my organization" and "Send to users inside or outside my organization" and from the details select the "Inside" links and switch both to "outside" then press next
   6. From the "Actions" window select the last action "Silently drop the message" and press next
   7. If you have any exceptions you can configure it in the "Exceptions" window ,If not just press next again
   8. Press "New" then "finish"

This will prevent any email sent from any one outside your organization and sent to anyone outside too from passing through your server and will stop relay.
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