Recipient Verification aka 5.5.0 No such user (500 points)


I would like to enable SMTP time sender verification on Exchange 2003. Domino had this functionality, as seen below:

implode:~ $ telnet 25
Connected to .
Escape character is '^]'.
220  ready at Fri, 24 Mar 2006 18:20:31 +0000
250 Hello ([]), pleased to meet you
250 ... Sender OK
550 No such user
221 SMTP Service closing transmission channel
Connection closed by foreign host.
implode:~ $

I have tried enabling the check box in ESM -> Global Settings -> Message Delivery -> Properties -> Recipient Filtering -> "Filter recipients who are not in the directory" and restarted SMTP service but this does not work. Also, when I checked the box - it warned my I must configure on the SMTP virtual IP's, but I can see nothing in the Default SMTP Virtual Server that corrosponds to this.

I am still getting a 250 at SMTP time after the RCPT TO: line...

Is this possible? Any ideas?

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There are two parts that you have to enable.

Recipient filtering on Global Settings.
Then the filter on SMTP Virtual Server.

ESM, Servers, <your server>, Protocols, Right click on the SMTP VS and choose Properties. Click on Advanced next to the IP address or all unassigned. Then click Edit and enable "Apply Recipient Filter".
Apply/OK out.


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gam1002Author Commented:
Thanks for this. As I say I did check the SMTP VS - obviously i didn't look hard enough.

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