After upgrading to RedHat 8.0, I'm being forced to learn more about sendmail that I have time to invest, so I need some help. Previously, I had used linuxconf to set up Linux server at work (EMC) that would forward most email to the domain mail server -- I'm not trying to manage mail for the company. One twist... I want to define a few aliases. My linuxconf setup worked great -- I could send email to aliasname@thismachine.emc.com, and the /etc/alias file would be used to translate "aliasname" to a list of addresses. With the new split sendmail config, I'm floundering. I've made a few tweaks that were necessary to allow the machine to act as an internal relay (I need some security help here, too), but I'm still fighting a mail loop problem. So, here are my specific questions/requirements: 1. I want to send to an alias on "thismachine.emc.com" from anywhere inside emc. 2. I want the same aliases to be used for email originating from "thismachine". 3. I don't want to create a relay security hole. I'll send my sendmail.mc and submit.mc files upon request. TIA, Bill