What does this messaging exception mean: javax.mail.NoSuchProviderException:   No provider for Address type: rfc822 I am running a Weblogic on a Sun...

According to Sun's JavaMail FAQ:

Usually this is because JavaMail can't access the configuration files in mail.jar, possibly because of a security permission problem; see this item for more details. Also, make sure that you haven't extracted the mail.jar contents; you should include the unmodified mail.jar file in the server's CLASSPATH.