use File::ReadBackwards;
use POSIX "strftime";

my $success;
my $items;
my $earliest = POSIX::strftime( "%Y-%m-%d %H:%M:%S", localtime( time() - 30 * 60 ) );

$bw = File::ReadBackwards->new( '/var/log/mmsagent/mmsagent.log' ) or
                        die "can't read '/var/log/mmsagent/mmsagent.log' $!" ;

while ( defined( my $log_line = $bw->readline() ) ) {


    last if $log_line lt $earliest;

    if ($log_line =~ /STATUS = SUCCESS/) {
        print $log_line;
    }

}