Problem with a file attach and a special spanish word

hi,

I use kolab 2.1 , my clients are thunderbird and outlook
toltec connector.
I found a problem when i send an e-mail file attach with a
name like 
this "MESAS DE CONFECCIÓN.zip" if the recipient
read the mail with 
thunderbird no problem but if i use outlook ot squierrlmail
the file is 
not recognise, they don't know the extension outlook said
me file 
attach: ATT00120.dat and squirrelmail said untitled-[2]  [ 
application/octet-stream ], with the file attach and a name
like this 
without the accent it is working "MESAS DE
CONFECCION.zip" .

Do you know how i can solve this problem, and who make this
problem 
amavis clamav postfix?

Thank you for your help.

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On Wednesday, 7. June 2006 18:43, Benoit BURATTI wrote:
> hi,
>
> I use kolab 2.1 , my clients are thunderbird and
outlook toltec connector.
> I found a problem when i send an e-mail file attach
with a name like
> this "MESAS DE CONFECCIÓN.zip" if the
recipient read the mail with
> thunderbird no problem but if i use outlook ot
squierrlmail the file is
> not recognise, they don't know the extension outlook
said me file
> attach: ATT00120.dat and squirrelmail said untitled-[2]
 [
> application/octet-stream ], with the file attach and a
name like this
> without the accent it is working "MESAS DE
CONFECCION.zip" .

This sounds like an encoding Problem of your email. 
The "Ó" in your filename is not presentable with
7bits, so it needs to be 
encoded in some other way. Unfortunally RFC1806 says:

2.3
[...]
Current [RFC 1521] grammar restricts parameter values (and
hence
Content-Disposition filenames) to US-ASCII.  We recognize
the great
desirability of allowing arbitrary character sets in
filenames, but
it is beyond the scope of this document to define the
necessary
mechanisms.  We expect that the basic [RFC 1521] `value'
specification will someday be amended to allow use of
non-US-ASCII
characters, at which time the same mechanism should be used
in the
Content-Disposition filename parameter.

So I would say you can only rely on the correct
interpretation of your 
attachements when using only 7Bit ascii filenames. I know
many clients 
support other that[0], but as far as there is not standard
for this you will 
get problems. 

Which client are you using for sending the mail? 

[0] AFAIK Kmail for example uses url-encoded filenames for
this on sending. 
This must be understood by the other site.

Regards 
Torsten

-- 
Torsten Irländer                                   
Intevation GmbH

torsten.irlaenderintevation.de
http://www.intevation.de/
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On Wednesday 07 June 2006 18:43, Benoit BURATTI wrote:
> hi,
>
> I use kolab 2.1 , my clients are thunderbird and
outlook toltec
> connector. I found a problem when i send an e-mail file
attach with a
> name like this "MESAS DE CONFECCIÓN.zip" if
the recipient read the
> mail with thunderbird no problem but if i use outlook
ot squierrlmail
> the file is not recognise, they don't know the
extension outlook said
> me file attach: ATT00120.dat and squirrelmail said
untitled-[2]  [
> application/octet-stream ], with the file attach and a
name like this
> without the accent it is working "MESAS DE
CONFECCION.zip" .

Outlook is broken. In KMail we have the special setting 
"Outlook-compatible attachment naming" which
when enabled makes KMail 
put the name of the attachment in such a way in the message
such that 
Outlook understands the attachment name. Unfortunately, this

Outlook-compatible attachment naming is not compatible with
RFC 2231 
(which updates RFC 1806 mentioned by Torsten). Thunderbird
probably 
(correctly) encodes the attachment names according to RFC
2231.

Regards,
Ingo
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