Hi all, I configured a domain server hosting multiple domains. I followed this tutorial (perfect server) I bought the ISPConfig3 manual and configured mailman as put right there. I created some mailing lists and when I try to send a mail to one, I always get a bounce with the following message: Normal email traffic is working okay. mailing lists don't. I have the following line in my /etc/postfix/transport: What am I missing? Do I need to have an MX record pointing lists.mydomain.com to my server? I thought I could relay that locally on the server. Thanks for your thoughts. Jeroen.