For Mailman 2.0.3 the way the Mailman admin web interface works is that PhP redirects URLs to ~www/php/subpages/admin.mail.php, which then opens a connection to a URL that starts with mailman. For example, http://www.e3s-center.org/webmaster/admin/webmaster/privacy causes http://www.e3s-center.org/mailman/admin/webmaster?adminpw=46755f8bfb93ce397d48e6b7bc0e6ece&admlogin=Let+me+in... to be read.

This can be seen in /usr/local/apache/logs/access_log_e3s (check also access_log_e3s-center):

70.36.159.23 - - [13/Oct/2011:12:45:55 -0700] "POST /webmaster/admin/webmaster/privacy HTTP/1.1" 302 243
128.32.244.33 - - [13/Oct/2011:12:45:55 -0700] "GET http://www.e3s-center.org/mailman/admin/webmaster?adminpw=46755f8bfb93ce397d48e6b7bc0e6ece&admlogi
n=Let+me+in... HTTP/1.0" 200 13880
128.32.244.33 - - [13/Oct/2011:12:45:55 -0700] "GET http://www.e3s-center.org/mailman/admin/webmaster/privacy HTTP/1.0" 200 10952
70.36.159.23 - - [13/Oct/2011:12:45:55 -0700] "GET /webmaster/admin/webmaster/privacy HTTP/1.1" 200 18044
URLs that start with /mailman are redirected by settings in /usr/local/apache/conf/httpd-vhosts.conf:
   ScriptAlias /mailman/ "/home/mailman_5/cgi-bin/"

To go directly to the pages that are accessed, such as http://www.e3s-center.org/mailman/admin/webmaster/privacy, as an admin user, go to Options -> Mail Utilities, which leads to https://www.e3s-center.org/options/power/list. and get the mailing list password.