[Tickets #4348] Attachments with filenames of special charset downloaded incorrectly with MS IExplorer

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Ticket URL: http://bugs.horde.org/ticket/?id=4348
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 Ticket             | 4348
 Updated By         | ditsa at ccf.auth.gr
 Summary            | Attachments with filenames of special charset downloaded incorrectly with MS IExplorer
 Queue              | IMP
 Version            | 4.1.3
 Type               | Bug
 State              | Feedback
 Priority           | 1. Low
 Owners             | 
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ditsa at ccf.auth.gr (2006-08-28 06:48) wrote:

> This is indeed a well known bug in Internet Explorer which is 
> ignoring the charset we send with the filename. Since we send the 
> file as-is, only providing the charset with it, it doesn't matter how 
> the file name is encoded in the mime part headers.

Thanks Jan,

Is there a chance that this other encoding method could be implemented for
attachment filenames in Composing mails in future IMP versions, that would
solve the problem for IExplorer downloads?

We have confirmed that encoding filenames like this, with base64 encoding,
solves the problem:

--------------080904060007010807050604
Content-Type: application/msword;
name*=ISO-8859-7''%C4%EF%EA%E9%EC%E1%F3%F4%E9%EA%FC%E1%F1%F7%E5.doc
Content-Transfer-Encoding: base64
Content-Disposition: inline;
filename*=ISO-8859-7''%C4%EF%EA%E9%EC%E1%F3%F4%E9%EA%FC%E1%F1%F7%E5.doc

Thanks.