Morning, I fear I might know the answer to this but I need some clarification from you wise and generous Exchange gurus. We have a new Exchange 2010 server that's been installed to replace an old 2003 machine. Our new server is now dealing with very much more spam Email than ever before. Most of the stuff is mis-addresses; it's not to valid addresses in our organisation but the 2010 box receives it anyway. I ran some manual inbound SMTP conversations against the machine and, sure enough, it'll happily accept Emails for barack.obama@ourdomain.com, but President Obama doesn't work here! Why does 2010 not refuse inbound Emails for recipients that do not exist? I Googled this issue and found some stuff about Edge Transports and Edge Subscriptions, it seems that Edge Transport servers need to be subscribed to the AD in-order to be able to refuse Emails for invalid recipients. Is that right? However, we're a single-server organisation and I can't see how to add the Edge Transport role to our configuration. Is there a way to do what I want to do? Will the Edge Transport role run on a server that's already got all the other Exchange 2010 roles installed? Cheers Jason.

Dear Jason, Well In your Scenario you can deploy Edge Transport for Spam protection basically you required a seprate server for Edge role, you cannot install edge on same server with other roles and also it should not be a member of your domain, just add dns suffix for the edge. Edge Transport server role is deployed in your organization's DMZ network. Please review this on Technet. http://technet.microsoft.com/en-us/library/bb124701.aspx http://exchange2k10.wordpress.com/2009/11/24/how-to-install-exchange-server-2010-edge-transport-server/ In addtion to this you have another option if your organization is small. You can Enable Anti-Spam Functionality on a Hub Transport Server http://technet.microsoft.com/en-us/library/aa997658.aspx http://technet.microsoft.com/en-us/library/bb201691.aspx Thanks MHussain

Actually, rejecting mail for nonexitent recipient gives a spammer clues to which addresses are valid and which aren't. -- Ed Crowley MVP "There are seldom good technological solutions to behavioral problems." . "Jason Timmins" wrote in message news:2a1e74a4-f5fe-4da0-9d48-97fdc9a770d1... Morning, I fear I might know the answer to this but I need some clarification from you wise and generous Exchange gurus. We have a new Exchange 2010 server that's been installed to replace an old 2003 machine. Our new server is now dealing with very much more spam Email than ever before. Most of the stuff is mis-addresses; it's not to valid addresses in our organisation but the 2010 box receives it anyway. I ran some manual inbound SMTP conversations against the machine and, sure enough, it'll happily accept Emails for barack.obama@ourdomain.com, but President Obama doesn't work here! Why does 2010 not refuse inbound Emails for recipients that do not exist? I Googled this issue and found some stuff about Edge Transports and Edge Subscriptions, it seems that Edge Transport servers need to be subscribed to the AD in-order to be able to refuse Emails for invalid recipients. Is that right? However, we're a single-server organisation and I can't see how to add the Edge Transport role to our configuration. Is there a way to do what I want to do? Will the Edge Transport role run on a server that's already got all the other Exchange 2010 roles installed? Cheers Jason. Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hi, After deploying edge server or installing anti-spam agent in hub server. You could set the following settings to prevent non-existence recipients: Anti-spam | recipient filtering | block messages sent to recipients not listed in the Global address List Thanks, Elvis

Hi, After deploying edge server or installing anti-spam agent in hub server. You could set the following settings to prevent non-existence recipients: Anti-spam | recipient filtering | block messages sent to recipients not listed in the Global address List Thanks, Elvis