Phil Karn says:

...

You don't use the system telnet, you write your own socket application. ... You could hack up a copy of sendmail, but SMTP is so trivial that you could do it yourself, especially since the functionality you need is so limited. Perry says: Indeed, writing an SMTP agent in Perl is quite trivial -- I've done it.

While you're at it, another source for traffic analysis is DNS requests; you may want to cache these for the sites you commonly connect to, or at least put a DNS server on your machine to do some caching. In a mature environment, most of your anonymous traffic will go to other remailers anyway, but might as well cut down on the logging opportunities. Bill