ZhangHuangbin wrote:
Check if there's any error / warning / fatal message in Postfix log first.
Here it is what I have found in the logs... logs were full yesterday but today only 4 lines.
PHP Warning: stream_socket_client(): unable to connect to 127.0.0.1:587 (Connection refused) in /opt/www/roundcubemail-1.1.5/vendor/pear-pear.php.net/Net_Socket/Net/Socket.php on line 158
ERROR: Connection refused (111)
ERROR: Failed to connect socket: Connection refused ()
<7i6k6a85> SMTP Error: Connection failed: Failed to connect socket: Connection refused in /opt/www/roundcubemail-1.1.5/program/lib/Roundcube/rcube.php on line 1648 (POST /mail/?_task=mail&_unlock=loading1485175006983&_lang=en_US&_framed=1&_action=send)
This is all...