As there are many none working answers floating on the net here is a solution that will fix the issue for most of you: Locate the configuration file of roundcube defaults.inc.php or main.inc.php: /var/lib/roundcube/config/ (1.2) or /etc/roundcube Then change the smtp_server: FROM $config['smtp_server'] = 'localhost'; TO THIS $config['smtp_server'] = '127.0.0.1'; OR $config['smtp_server'] = 'xx.xx.xx.xx'; (replace xx your external…
Les Mer
