Jason Hendriks on "[Plugin: Postman SMTP Mailer/Email Log] WordPress (or another plugin) is currently handling email delivery, not Postman."

@ndelmoral this plugin has not been configured. Postman v1.6.24 will not attempt to bind to wp_mail when it not configured. (This behaviour changes in 1.7)

Also, if you are having a bind problem, you need to switch the theme to the default WordPress 2015 to ensure it's not a problem with "Betheme Child".