I don't see any module on CPAN called Net::FTPSSH or indeed any with "FTPSSH" in its name at all. Where did you obtain this module or (if from CPAN) what is its real name?

I'd expect that the problem is actually to do with the underlying capabilities of the SSL libraries on your client system and not to do with perl. Did you try connecting with openssl s_client? What was the result?

Fixed the question. I ment Net::FTPSSL

After updating Net::FTPSSL and the modules that go with it i was able to force the connection i needed.
While it's suggested to not do this. It appears to be necessary in my case.

use Net::FTPSSL;

my $ftps = Net::FTPSSL->new(
    'site.uat.mysite.com',
    Encryption             => EXP_CRYPT,
    Debug                  => 1,
    DebugLogFile           => "myLog.txt",
    Port                   => 5041,
    useSSL                 => 0,
    SSL_Client_Certificate => {
        SSL_cert_file => '/path/to/cert_file.pem',
        SSL_passwd_cb => sub { return 'pa$$w0rd' },
        SSL_version   => 'TLSv12',
    },
    Croak => 1
);

$ftps->trapWarn();    # Only call if opening a CPAN bug report.

$ftps->login( 'USERNAME', 'PASSWORD' );


$ftps->put( "test.txt", "test1.txt" );
foreach ( $ftps->list() ) {
    print "$_\n";
}

$ftps->get("test1.txt");

$ftps->quit();
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