[Robbie Ferguson]

Hi Luckyworlock,
I'm so glad you love NEMS! Thanks!

On with your question... this tells us that NEMS tried to send an email using a secure connection, but your SMTP server rejected that connection.

So the first thing to check is that your server port for SMTP is set correctly in NEMS SST. It is very common for 587 to be correct, so if you're unsure, try it as baggins suggested above.

Looking deeper at your output...

192.168.0.205:25 -- this is a LAN IP you have set for your SMTP server.

Are you sure you have an SMTP server on your LAN? And if you do, do you have TLS support configured correctly?

Your issue looks like a problem with your SMTP server, not NEMS.

I have plans to add a switch to NEMS SST that allows you to use non-secure SMTP servers, but because I so HIGHLY recommend against it, I'm in no hurry to do so. You need to make sure your SMTP server supports TLS.

Also, because this is an internal SMTP server, what happens if your SMTP server goes down? NEMS will want to send you an alert, but you'll never get it    Catch 22. I'd recommend using an outside server, like Gmail.

Let me know how it goes.