SMTP Email Setup and Troubleshooting

Hello,
CI 3.x

I have created a /config/email.php config file.

I have this set:

PHP Code:

$config['protocol'] = 'smtp';
// $config['mailpath'] = '/usr/sbin/sendmail';
$config['charset'] = 'iso-8859-1';
$config['wordwrap'] = TRUE;
$config['smtp_host'] = 'mail.jonespublishing.com';
$config['smtp_user'] = '<someuser>@jonespublishing.com';
$config['smtp_pass'] = '<pass>'; 


I'm at a loss how to troubleshoot this... as I don't have access to the mail.jonespublishing.com logs.  Relaying from this IP should be allowed.

Ideas?
Thx,
Donovan