Wrong IMAP_CAPABILITY

[dpacheco]

Hi roundcubers,

I'm having some trouble with roundcube 0.9.5 for reading the correct IMAP_CAPABILITY string.  If I telnet my mail server this is the output CAPABILITY string

Code: [Select]

* OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE] Courier-IMAP ready. Copyright 1998-2005 Double Precision, Inc.  See COPYING for distribution information.
Connection closed by foreign host.

But roundcube imap log output this

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[14-Mar-2014 17:36:39 -0300]: [CBBD] S: * OK [CAPABILITY IMAP4rev1] Courier-IMAP ready. Copyright 1998-2005 Double Precision, Inc.  See COPYING for distribution information.

Clearly, there are a lot of capabilities missing, including QUOTA, which makes the disk quota chart to be displayed on the down left corner of roundcube front end.
In this post (http://www.roundcubeforum.net/index.php/topic,6709.msg27523.html#msg27523), a user pointed out that this could be solved by exporting IMAP_CAPABILITY environment variable, but I just don't know how to do this.
By the way, I have a 0.8 roundcube test installation pointing the same mailserver and have no problem to show the disk quota chart.
My IMAP server is courier-imap-toaster-4.1.2.

Thanks