I get the error : Use of uninitialized value in concatenation (.) or string at /usr/lib/perl5/site_perl/Mail/POP3Client.pm line 422 when calling the Connect() And the Connect Sub: 
sub Connect
{
    my ($me, $host, $port) = @_;

    $host and $me->Host($host);
    $port and $me->Port($port);

    my $s = $me->{SOCK};
    if (defined fileno $s) {
        # close and reopen...
        $me->Close;
    }

    socket($s, PF_INET, SOCK_STREAM, getprotobyname("tcp") || 6) or
        $me->Message("could not open socket: $!") and
            return 0;
connect($s, pack($sockaddr, AF_INET, $me->{PORT}, $me->{ADDR}) ) or
        $me->Message("could not connect socket [$me->{HOST}, $me->{POR
+T}]: $!") and
            return 0;

    select((select($s) , $| = 1)[0]);  # autoflush

    defined($msg = <$s>) or $me->Message("Could not read") and return 
+0;
    chop $msg;
    $me->Message($msg);
    $me->State('AUTHORIZATION');

    $me->User and $me->Pass and $me->Login;

} # end Connect

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This is from the newest of POP3Client v 5.8.0 HELP, obviouisly this is just a connection issue

In reply to Mail::POP3Client Connection by Anonymous Monk

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