Attachments are not forwarded when option Forward > Body Text with Attachments
is chosen. Attachment is shown on compose screen, however once message is sent it is stripped out and recipient does not get attachment.
The issue is caused by enabled eaccelerator php plugin. That generate error in attachment process:
[01-Jul-2010 10:08:56] PHP Fatal error: Can't load Horde/Serialize.php, open_basedir restriction. in /usr/share/psa-horde/lib/
Horde/SessionObjects.php on line 134
[01-Jul-2010 10:13:29] PHP Notice: Undefined index: sentmail in /usr/share/psa-horde/imp/lib/Compose.php on line 759
[01-Jul-2010 10:13:29] PHP Notice: Undefined index: sentmail in /usr/share/psa-horde/imp/lib/Sentmail.php on line 121
Disabling eaccelerator plugin will solve the issue.