take a look at the SMTP section in config/main.inc.php.
Everything you need to do is there.

// ----------------------------------
// SMTP
// ----------------------------------



On Tue, Nov 6, 2012 at 6:05 AM, Roman Gelfand <rgelfand2@gmail.com> wrote:
I have configure the roundcube to use postfix mta to send outbound
mail.  It appears as if roundcube is using the postfix mta as a smtp
relay.  Is it possible to configure roundcube to connect to postfix as
client?

Thanks in advance.
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