Hello, I'm trying to get postfix and mailman working on an fc6 vps system. The postfix machine is using postfix virtual mailbox domains, that is all virtual users, no one local, and is currently hosting four domains I'll call them domain1.com, through domain4.com for this message. Two of the domains are now going to get lists on them, one at lists.domain1.com and the other at lists.domain4.com. And the address of sending would be something like <listname>@lists.domain1.com this is what I understand. The problem is it's not working, sending to the list gives an error no such user in virtual mailbox domain. If anyone has ideas let me know, I can provide my configs if theres anyone who wants to take a shot at this, I'm a little uncomfortable about posting them outright. I'd appreciate any help one of the lists is kind of urgent. Thanks. Dave.