SD+ smtp issues with Exchange 2010

I've been reading through the articles here and haven't quite found my prolblem, so forgive me if I missed something and it's already asked and answered.

But we have a POP account picking up emails and turning them in to tickets, no problem at all. However, the outgoing notifications do not work. We know that the settings are correct, in fact they worked for a short time before they stopped altogether. I've tried all the settings I could think of to hit our mail server, both internally and externally, nothing works. The error I get after reading through the logs is this:

 javax.mail.MessagingException: Exception reading response; nested exception is: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?

Now, I know my settings are correct, and I'm using SMTP with port 25, so I'm not even sure why it's trying to send it SSL, it's almost like it's stuck in SSL mode.

Any help would be greatly appreciated.

Mike Jones / Lead Technician
helpdesk@it-guysllc.com
I.T. Guys LLC Office: 484-453-8642

http://www.it-guysllc.com