We upgraded to exchange 2010 and this broke an old java based script that connected and sent out e-mail messages. Many hours later we still can't get exchange to work like exchange 2003 did. That hope was abandoned and we decided to create a linux postfix server to forward the e-mail from the old system to exchange, eliminating exchange on the java side. This still doesn't work with similar errors. I need help figuring out what is different between exchange 2003 with SSL and authentication and the new servers, both linux and exchange 2010. My guess is both have TLS and for some reason the java code won't revert back to the older version of SSL, instead it just fails. Can someone help me either setup exchange 2010 to work like 2003 used to, OR to setup postfix to mandate it use SSL 2.0 instead of TLS? unfortunately no one knows anything about the Java code and they can't decompile it apparently. Any help is appreciated.