[Zope] [Zope-CMF] Mail User Password

Hello, I am having trouble getting the email password functionality of the CMF working. I have set up a Mail Host with the correct SMTP server information, but I keep getting a connection refused error. Do I have to run a Mail server on the machine that Zope is running on? Thanks for any help. I am running Red Hat 7.2 Zope 2.5.1 CMF 1.2 Regards, Patrick Hresko