1-Open the Exchange management console—Navigate to the server configuration section—click the “hub transport”-- right click the server name at the middle pane—click “New Receive connector” 2-Type a name for this connector and click “Next” 3-for “Local Network settings” leave the defaults and click next 4-for “Remote Network Settings” ,type the ip addresses of remote computers that can use this exchange 2007 as SMTP relay and click “Next” (192.168.2.0/24) 5-Click “New” to create this new Receive connector How to provide the “Anonymous logon” the ability to use this exchange 2007 as SMTP relay. 1-Open the ADSI edit tool. 2-Right click “ADSI edit”—click “connect to”—In the “Select well known naming context” select “Configuration” 3-. Locate the Receive connector by going to the following location: CN=Configuration\CN=Services\CN=Microsoft Exchange\CN=<Organization>\ CN=Administrative Groups\ CN=Exchange Administrative Group (FYDIBOHF23SPDLT)\ CN=Servers\CN=<Server Name>\CN=Protocols\CN=SMTP Receive Connectors 4-Right click the receive connector already created and click properties. 5-on the security tab—give the “anonymous logon” group the following rights: · Accept any sender · Accept Authoritative Domain Send. · Accept Routing Headers · Submit Messages to Any Recipient · Submit Messages to Server Note :Only computers with IP addresses in the 192.168.2.0/24 range can use this exchange server as a SMTP relay. Any comment is realy appreciated.

Is this a question? Why are you using ADSI edit? That sounds like a horrible idea!! You can easily add an additional connector for the applications that need to relay without disrupting normal inbound mailflow. See this article: http://msexchangeteam.com/archive/2006/12/28/432013.aspx Mike Crowley Check out My Blog!

Hi, Yes Mike is correct. You can create a new connector and on the permissions tab you can enable "Anonymous" submission. This will help you to relay the mails without authentication. Thanks.