Estou tendo problemas com um raspador de tela perl para um site HTTPS. Na depuração, executei o seguinte:

print $res->headers_as_string;

e na saída, tenho a seguinte linha:

Client-SSL-Warning: Peer certificate not verified

Existe uma maneira de aceitar este certificado automaticamente ou esse não é o problema?

#!/usr/bin/perl 
use LWP::UserAgent; 
use Crypt::SSLeay::CTX; 
use Crypt::SSLeay::Conn; 
use Crypt::SSLeay::X509; 
use LWP::Simple qw(get);

my $ua  = LWP::UserAgent->new; 
my $req = HTTP::Request->new(GET => 'https://vzw-cat.sun4.lightsurf.net/vzwcampaignadmin/');
my $res = $ua->request($req);

print $res->headers_as_string;

resultado:

Cache-Control: no-cache
Connection: close
Date: Tue, 01 Jun 2010 19:28:08 GMT
Pragma: No-cache
Server: Apache
Content-Type: text/html
Expires: Wed, 31 Dec 1969 16:00:00 PST
Client-Date: Tue, 01 Jun 2010 19:28:09 GMT
Client-Peer: 64.152.68.114:443
Client-Response-Num: 1
Client-SSL-Cert-Issuer: /O=VeriSign Trust Network/OU=VeriSign, Inc./OU=VeriSign International Server CA - Class 3/OU=www.verisign.com/CPS Incorp.by Ref. LIABILITY LTD.(c)97 VeriSign
Client-SSL-Cert-Subject: /C=US/ST=Massachusetts/L=Boston/O=verizon wireless/OU=TERMS OF USE AT WWW.VERISIGN.COM/RPA (C)00/CN=PSMSADMIN.VZW.COM
Client-SSL-Cipher: DHE-RSA-AES256-SHA
Client-SSL-Warning: Peer certificate not verified
Client-Transfer-Encoding: chunked
Link: <css/vtext_style.css>; rel="stylesheet"; type="text/css"
Set-Cookie: JSESSIONID=DE6C99EA2F3DD1D4DF31456B94F16C90.vz3; Path=/vzwcampaignadmin; Secure
Title: Verizon Wireless - Campaign Administrator

UPDATE: adicionei

$ENV{HTTPS_CA_FILE}   = 'certs/PSMSADMIN.VZW.COM';
$ENV{HTTPS_CA_DIR}    = 'certs/';

como sugerido abaixo. Também ativei a depuração:

$ENV{HTTPS_DEBUG} = 1;

Aqui está a minha saída:

SSL_connect:before/connect initialization
SSL_connect:SSLv3 write client hello A
SSL_connect:SSLv3 read server hello A
SSL3 alert write:fatal:bad certificate
SSL_connect:error in SSLv3 read server certificate B
SSL_connect:before/connect initialization
SSL_connect:SSLv2 write client hello A
SSL_connect:error in SSLv2 read server hello B
content: 500 SSL negotiation failed: error:1407E086:SSL routines:SSL2_SET_CERTIFICATE:certificate verify failed

Eu tento ignorar a falha, mas o problema é que essa é a única coisa na página agora, portanto, não há formulário de login nem nada.