We have a single Exchange 2003 box, configured to pop from our email host, and to SMTP out. I have a handful of users that I need to restrict from sending email to the net, but these employees need to receive emails internally (within domain).
I have read the article http://www.msexchange.org/tutorials/MF009.html
. It discusses creating an SMTP Connector. My Exchange setup does not have "Connector" at that root level as shown in the example, so I cannot follow that instruction set. I do have SMTP Virtual, but the article specifically states *not* to use that.
I then found the article http://www.msexchange.org/tutorials/MF025.html
. This article speaks on restricting what email the user can GET. Not what I need...
Then the article http://support.microsoft.com/default.aspx?scid=kb;en-us;Q277872
however I am not comfortable in modifying the reg just yet - nit until I am certain of a complete solution.
I cannot restrict at the firewall level. We also do not proxy.
I opened dsa.msc, went to the user, Exchange General>Delivery Restrictions>Maximum KB set it to "0", yet mail still went out.
In a single Exchange environment, with no bridgehead server, how can one stop emails from going to the net in this situation?