Hi,I'm using Exchange 2003. I have one user who very mobile. He needs to send an email everytime he mobiled, and he doesn't want to change the SMTP configuration on his laptop. Could you help me how the step to open Exchange SMTP with securely (or with authentication)? Does we need another IP Public again? If it can be do by authentication, with what authentication we will use? And for information, we also using MS ISA 2006. Thankyou.Regards

Take a look at this article for configuring SMTP authentication. Keep in mind that since that users could be anywhere on the Internet when mobile you'll have to allow SMTP connections from all IPs potentially impacting how you have the rest of the environment configured.http://www.petri.co.il/preventing_exchange_2000_2003_from_relaying.htmJeff Schertz, PointBridge | MVP | MCITP: Enterprise Messaging | MCTS: OCS

I have a doubt about the point 8 ... If the list is blank ... you run any script to send email without passing the credentials did not work right?. And if you put on the list of the IP server, this type of scripts operate?, But that risk correspondence to conduct relay? Thank you

Hi,Did you configure RPC Over HTTS to achieve the mobile working?Please check whether below link can help you:http://www.petri.co.il/configure_rpc_over_https_on_a_single_server.htmThanksAllen