Non-authenticated SMTP?

Is non-authenticated smtp possible at all with dreamhost? I’ve got an old industrial PID controller that I want to be able to send email to me upon alerts. It doesn’t have any ability to set authentication information, or port number even, and I’ve tried everything that I can think of as a way to include it in the few fields it does give me. I haven’t succeeded so far.

I only want to send it to one of my own domain’s email accounts. Is there any means by which to do this? Am I going to have to set up some sort of relay service on my home server? Anybody know a trick of how to get an old device to play by today’s authentication standards?