If you don't already have iPlanet Web Server installed and running, you'll need to download it
from the iPlanet Web Server  product page and install it. We tested the JakartaMailServlet with
these configurations.

(on Solaris)

 iPlanet Web Server 4.1 (binary)
(on NT)
 iPlanet Web Server 4.1 (binary)
To run the JakartaMailServlet, you must add the Jakarta Mail and JavaBeans Activation Framework
jar files to the CLASSPATH environment variable (this is documented in the Jakarta Mail README file
and additional Windows NT information is provided here).

Once this is done, restart the web server.
 

Additional Notes

iPlanet Web Server 4.1 does not use a SecurityManager or enforce any Java security policy.