Fixed in FW_3.  This was fixed in Horde 4 previously due to the MIME rewrite.

Changes have been made in CVS for this ticket:

http://cvs.horde.org/diff.php/framework/MIME/MIME/Attic/Part.php?rt=horde&r1=1.177.4.26&r2=1.177.4.27&ty=u

The workaround for the option brokenrfc2231 doesnt work, for longer 
filenames at least (>50?).



The check (strpos($encode_2231, '*=') !== false)) will never return 
true, simply because



$encode_2231 = MIME::encodeRFC2231($key, $value, $charset);



will not result in *= but in *0= *1= etc - an encoded string looks like this:



name*0="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";

     
name*1="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";

     
name*2="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";

     name*3="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.pdf"



there is no name*= for longer filenames. Only for shorter



Fix:



replace if with



if (!empty($GLOBALS['conf']['mailformat']['brokenrfc2231']) &&

                 ((strpos($encode_2231, '*=') !== false) || 
(strpos($encode_2231, '*0=') !== false))) {

                 $ctype .= '; ' . $key . '="' . MIME::encode($value, 
$charset) . '"';

             }



in both places