[imp] Unable to View Attachment eg. PDF via IE 6.0

[Jan Schneider]

Zitat von Fernando Widjaja <fernando at chime.net.au>:

> Dear All
>
> Wish to ask for advice and help pls. It seems that Internet Explorer
> cannot wiew some attachments from Horde IMP Webmail [We deployed the Horde
> IMP version 3.2.5 Final - http://mail.iinet.net.au]. One of the filetypes
> Internet Explorer has trouble viewing is PDF. When attempting to View a
> PDF file, Internet Explorer reports an error similar to:
>
> Internet Explorer cannot download c41e8feb0ed16779a12155a149b6ae52...
>
> There are also reports that Internet Explorer believes attachments to be
> PHP files. When attempts to "view" the attachment, IE believes it is a
> 'view.php' [file type: Adobe Acrobat Control for ActiveX] file and there
> is no external view assigned for .php file.

IE and the Acrobat are badly broken, this is a common problem.

> Both reports have been replicated with Internet Explorer only.  Mozilla
> and other browsers are not affected, and the Download link for the
> attachment works for all browsers.
>
> The issue appears to be that IMP is compressing the PDF on the way out,
> and IE does not cope with both compressed content and external viewers.
> Tested by commenting out compression entirely, and also by excluding
> viewed attachments from gzipping, and it works.

Great!

> Problem is, if we patch the code, it will cause issues if/when we upgrade
> IMP. Would anyone in the list experience the similar problem? Is there any
> fixes for this particular issue? Please help. Thanks heaps in advance.

If you send a patch we might consider integrating it in the official code.

Jan.

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