Hello,
I have also posted this info on a cPanel WHM forum, but it may be more relevant here.
hello,
roubecube is the only webmail app enabled for my clients.
it was working like a dream (with the default configuration created by cpanel team), but today when i upgraded to the most recent CURRENT tree, and roundcube was updated to .2-stable, users are no longer able to send email. after composing their emails and clicking send they are faced with the "sending..." notification for about 2 min, and nothing happens.
The Roundcube error log shows this every time a user tries to send an email:
[30-Jan-2009 14:07:11] Invalid response code received from server (421):
[30-Jan-2009 14:07:11] Invalid response code received from server (-1):
[30-Jan-2009 14:07:34 -0800] SMTP Error: SMTP error: Authentication failure: STARTTLS failed (Code: ) in /usr/local/cpanel/base/3rdparty/roundcube/program/steps/mail/func.inc on line 1248 (POST /3rdparty/roundcube/index.php?_task=mail&_action=send)
[30-Jan-2009 14:10:29] STARTTLS failed ():
Any assistance would be greatly appretiated!