root#~ openssl s_client -connect srs.neulevel.biz:700 -cert ./my-cert.pem -key ./my-cert.key -CAfile ca_bundle.pem 
CONNECTED(00000003)
depth=1 /C=US/O=Equifax/OU=Equifax Secure Certificate Authority
verify return:1
depth=0 /C=US/O=epp.neustar.biz/OU=GT20684673/OU=See www.geotrust.com/resources/cps (c)07/OU=Domain Control Validated - QuickSSL Premium(R)/CN=epp.neustar.biz
verify return:1
---
Certificate chain
 0 s:/C=US/O=epp.neustar.biz/OU=GT20684673/OU=See www.geotrust.com/resources/cps (c)07/OU=Domain Control Validated - QuickSSL Premium(R)/CN=epp.neustar.biz
   i:/C=US/O=Equifax/OU=Equifax Secure Certificate Authority
 1 s:/C=US/O=Equifax/OU=Equifax Secure Certificate Authority
   i:/C=US/O=Equifax/OU=Equifax Secure Certificate Authority
---
subject=/C=US/O=epp.neustar.biz/OU=GT20684673/OU=See www.geotrust.com/resources/cps (c)07/OU=Domain Control Validated - QuickSSL Premium(R)/CN=epp.neustar.biz
issuer=/C=US/O=Equifax/OU=Equifax Secure Certificate Authority
---
No client certificate CA names sent
---
SSL handshake has read 1775 bytes and written 3588 bytes
---

##</code><code>##

#!/usr/bin/perl
use strict;
use warnings;
use IO::Socket::SSL qw(debug4);

my $client = new IO::Socket::SSL(
          PeerAddr        => "srs.neulevel.biz",
          PeerPort        => 700,
          Proto           => 'tcp',
          SSL_use_cert => 1,
          SSL_key_file => "my-cert.key",
          SSL_cert_file => "my-cert.pem",
          SSL_ca_file => "ca_bundle.pem",
);
           
if (defined $client) {
        print <$client>;
        close $client;
} else {
         warn "I encountered a problem: ",
         IO::Socket::SSL::errstr();
}
warn $! if not defined($client);

##</code><code>##

SSL connect attempt failederror:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca
 at /root/biz_test.pl line 6
IO::Socket::INET configuration failed
 at /root/biz_test.pl line 6
I encountered a problem: IO::Socket::INET configuration failed at /root/biz_test.pl line 20.
IO::Socket::SSL: Timeout	...caught at /root/biz_test.pl line 23.