[scheduled_sending] Does not work, instructions are confusing

Token: 311d09c05cd0c738100ce2d0f4561b45 (Don't modify this token!)
Version: 2.0.18 (30.11-2013)
PHP: 5.4.19
RCMAIL: 0.9.5
Database: mysql
SERVER: Apache
----
I.  Issue Description: I am not able to send a scheduled message. Not sure if 
my configuration is wrong. I have the following in config.inc.php

<?php
/* cron */
$rcmail_config['cron_log'] = true;
$rcmail_config['cron_smtp_user'] = 'dummy@mydomain.tld';
$rcmail_config['cron_smtp_pass'] = 'pass';
$rcmail_config['cron_rc_url'] = 'http://localhost/post';
$rcmail_config['cron_sender'] = 'root@foretell.ca';
?>

and the cron job

*/5     *       *       *       *       /usr/local/bin/php-5.4 
/var/www/roundcubemail/plugins/scheduled_sending/cron/sendmail.php >/dev/null 
2>&1

II. Steps to reproduce the Issue:
1. I compose a message and click on scheduled sending and set the time for 10 
or 15 minutes later. See the status message at the bottom asking me to continue 
composing or close the window. I go the Calendar etc. or close the webmail tab. 
2. Message is not sent as scheduled
3.

Original issue reported on code.google.com by vsankar2...@gmail.com on 28 Jan 2014 at 2:35

dakira / myroundcube

[scheduled_sending] Does not work, instructions are confusing #631