For my web site, I use a VPS and run a LAMP system on Debian. I find that it runs very well but that the I don't have a lot of available memory (only 256 Mb + burst). I have managed to optimize Apache and MySQL for the memory space, but Postfix still takes a fair amount of memory with all its processes. I am wondering if anyone can suggest a small footprint mail server with PHP support that I could use to replace Postfix? I have looked in the past and not seen anything but it is always worth asking as new software comes out.