Sorry, This should havebeen posted as a question.Environment - 1 Exchange 2003, 2 Exchange 2007 ( 1CAS, 1mailbox, hub transport).We have internal app servers that need to relay off the hub transport server. I have read this article http://msexchangeteam.com/archive/2006/12/28/432013.aspx.Currently, the app servers use their local smtp service and use our Exchange 2003 server as a smart host. Relaying on the Exchange 2003 server is restricted by IP.In reading the article above it states thatallowing relayingis simple because by default authenticated servers are allowed to relay. I guess I'm not quite sure how to set up our app servers to authenticate. Thanks

Hi,Some applications servers allow you to give a username and password.Another option is to create a seperate send connector which is limited to specific IP-addresses for example you application servers. This can be configured to allow unauthenticated users then because you "protect" it by limiting the IP-addresses allowed to use it.Regards,Johan blog: www.johanveldhuis.nl

Hi,To relay by using authenticated way, the application server must has the feature of providing username and password. Such as, in Exchange 2003, on the Properties of the SMTP VS, in the Delivery tab, click Outbound Security button, the username and password can be used.For your question, I recommend using a separatereceive connector to work on this issue.ThanksAllen

Im confused. Don't I need to create another receive connector instead of send connector.

Hi,No send connector is correct.Regards,Johan blog: www.johanveldhuis.nl

As the Exchange Team article says, you would create a Receive Connector. That is so the Hub Transport server will accept the messages from your app servers. That is also the connector you apply the permissions to.I mentioned Send Connector as well in my reply to your other post. Sorry for any confusion!Lee Owens

Hi,Lee is right my mistake indeed it's a receive connector.Regards,Johan blog: www.johanveldhuis.nl

Hi,Sorry for thewrong inputting due tocareless work.I just revised the previous post.ThanksAllen

PROBLEM SOLVED. IT WAS THE ANTI-VIRUS! DISREGARD THIS POST.Well, I went ahead and set up a new receive connector and I am able to relay with asp mail and Outlook Express. But these app servers have IIS installed and I want to configure the SMTP service to use the new receive connector as a smart host. No luck so far. This is IIS 5.1. Is there areason why thiswouldn't work. I've tried it from two different app servers and the mail just sits in the queue.Again, relaying is working on this new connector, just not from IIS.Any ideas.Thanks