Are you talking about a
servlet making SMTP/FTP connections, or are you talking about accessing Tomcat via SMTP/FTP instead of HTTP?
If the former, then the answer is yes. You can use the JavaMail API for making SMTP connections, and the Jakarta Commons Net library for FTP connections.
If the latter, then this is only theoretically possible.
This FAQ page has more detail about why that is so.
[ December 07, 2006: Message edited by: Ulf Dittmer ]