Currently exception notification are handled through Log4J. This has several problems:

1) Requires manual log4j configuration for each deployment, in addition to general application e-mail configuration.
2) Message layout must be done in code.
3) Direct coupling of exception to notification mechanism.

Changes needed.
1) Utilize the new template messaging mechanism.
2) Change to event driven mechanism.
3) Replace log4j mechanism with log writer and e-mail based event handler.
4) Derive all e-mail configuration from main application settings.