quite helpful:

Mozilla CSS Extensions

With HTML::Mason
  (1) Internal redirect: use subrequest like $m->subexec('/path/to/comp') and in the destination component, undef the inherit flag. (Note: this works only on Mason component, cannot parse URIs with query strings)
  (2) External redirect: $m->redirect($url), $url can be any URIs or Mason components

With mod_perl:
  (1) Internal redirect: $r->internal_redirect, or you can change $r->uri, $r->args in PerlTransHandler to make a rewrite of your request URI;
  (2) External redirect: $r->err_headers_out( Location => $url );

You can always set HTTP header 'Location' to conduct a redirection.

I am now using Net::SMTP to send feedback emails:

package MyApp::Mail;

use strict;
use warnings;
use Carp qw/carp/;
use Net::SMTP;

sub send_mail
{
    my($from, $to, $subject, $body) = @_;
    carp "From missing" if not defined $from;
    carp "To missing" if not defined $to;

    my $mail_message = <<END_MAIL;
To : $to
From : $from
Subject : $subject

$body

END_MAIL

    my $smtp = Net::SMTP->new(
        'xichengjia.com',
        Timeout => 60,
        Debug => 0,
    );
    $smtp->mail($from) or carp "cant specify a sender [$from]\n";
    $smtp->to($to) or carp "cant specify a recipient [$to]\n";
    $smtp->data([$mail_message]) or carp "can't specify a message";
    $smtp->dataend() or carp "fail to end sending data";
    $smtp->quit() or carp "failed to quit\n";
}


1;

It's been working well so far.. ...More

Several modifications on the code
 (1) Some Enviromental parameters changed. i.e. $ENV{REMOTE_ADDR} is not the visiting address any more. Switch to $ENV{HTTP_X_FORWARDED_FOR}
 (2) local time is the server local time which has 4 hours difference from EDT. change from

    scalar localtime

to

    scalar localtime(time - 5)

and MySQL related DBIx code: change

    NOW()

to

    date_add(now(),interval -4 hour)

under per-directory configuration file .htaccess:
    * RewriteBase /, and no leading slash to the destination URI
    * use Options +-Indexes to control directory access

Most stuff now works pretty well. One problem left is the viewvc.cgi which can be used to access my cvs repository. The scripts needs RCS toolchains, and my current server doesnot have them. Will talk to Eric Monday.. ...More