It's been a long time since I visited these forums, brings back old memories...
I figured I'd post and let anyone who was interested know that I was now offering email friendly web hosting...
No spam allowed of course, very strict on that... It also comes with a bit newer autoresponder than Listmail but you should also be able(?) to use listmail if you wanted...
Here's my shameless plug for it:
http://www.extremeleadprogram.com/extreme-autoresponder-realtime-web-hostSPF, DKIM, dedicated IP, full hosting control panel, etc...