hey guys,
roundcube is stuck on "Sending Message" right after i finshed compose. there error generated is as follows:-
[10-Jun-2014 15:40:24 +1000]: SMTP Error: SMTP error: Connection failed: Invalid response code received from server in /var/www/html/roundcubemail-1.0.1/program/lib/Roundcube/rcube.php on line 1504 (POST /roundcube/?_task=mail&_unlock=loading1402379197533&_lang=undefined?_task=mail&_action=send)
[10-Jun-2014 15:40:24 +1000]: DB Error: [2006] MySQL server has gone away (SQL Query: SELECT vars, ip, changed, now() AS ts FROM session WHERE sess_id = 'e356ef401dfb5c30d7be392123ddc6db') in /var/www/html/roundcubemail-1.0.1/program/lib/Roundcube/rcube_db.php on line 467 (POST /roundcube/?_task=mail&_unlock=loading1402379197533&_lang=undefined?_task=mail&_action=send)
its not firewall related as i killed the firewall to test, can telnet to imap port 143.
any help would be greatly appreciated.