[Mimedefang] Problem on attachment name

[Ing. Andrea Vettori]

Hi,
I've a problem with mimedefang (version 2.58) with SpamAssassin 3 and  
f-secure antivirus on Linux.

The problem occours only when the email comes from an Apple Mail client.

This is the relevant differences between the same message sent from  
gmail and from Apple Mail.

================= gmail ===================

MIME-Version: 1.0
Content-Type: multipart/mixed;
	boundary="----=_Part_3099_14291494.1168428347557"

------=_Part_3099_14291494.1168428347557
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

corpo

------=_Part_3099_14291494.1168428347557
Content-Type: application/zip; name="PULSANTI E FRECCE ACCESE.zip"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="PULSANTI E FRECCE ACCESE.zip"

UEsDBBQAAAAIAIZ8YzVPvY/ 
Y5hsAAOwbAAAkAAAAaW1hZ2VzL0hPTUUgQUNDRVNPIHYwMyAzLTEx


================== mac ====================

Mime-Version: 1.0 (Apple Message framework v752.2)
Content-Type: multipart/mixed;
	boundary=Apple-Mail-25--1005158849


--Apple-Mail-25--1005158849
Content-Transfer-Encoding: 7bit
Content-Type: text/plain;
	charset=US-ASCII;
	format=flowed

corpo


--Apple-Mail-25--1005158849
Content-Transfer-Encoding: base64
Content-Type: application/zip;
	x-unix-mode=0644;
	name=PULSANTI E FRECCE ACCESE.zip
Content-Disposition: attachment;
	filename="PULSANTI E FRECCE ACCESE.zip"

UEsDBBQAAAAIAIZ8YzVPvY/ 
Y5hsAAOwbAAAkAAAAaW1hZ2VzL0hPTUUgQUNDRVNPIHYwMyAzLTEx




The message sent from Apple Mail does trigger a tmpfail error on the  
antivirus because the antivirus find different names between the name  
on content-type and the name on content-disposition. I feel this  
problem can be caused by the absence of the quotes on the Apple Mail  
message. On the temporary file on which the antivirus is run, the  
name is trucated.

Anyone can confirm that this is the problem ? How can it be resolved ?

Thank you

--
Ing. Andrea Vettori
Consulente per l'Information Technology