> I hope this is not based on a very new linux. I see that the new > ones cannot run on my somewhat antiquated z890.
It should work fine on a z890 (it was built on a 7060-H70 and tested on a z800, so it should be OK). Give me a few days to package it up and put it somewhere for you. It can also serve as a complete replacement for the VM SMTP (thanks to M. Beattie's UR driver), but I'd recommend just using it as a proxy for now.