21840 - Wrong display of zip files attached to the message

Status: VERIFIED DUPLICATE of bug 21907

(SeaMonkey :: MailNews: Message Display, defect, P3)

Description

[marina]

When you attach a .zip file to the message it comes not as an attachment but in
the open format where you can see the PKzip process.
(the message with .exe file attach comes blank , might be a separate bug)
Steps to reproduce:
-open new mail composition;
-click attach icon;
-attach a .zip file from the local drive (it looks like the size of the file
doesn't matter, i used several from 13k to 2000K);
-get message and note:
//there is no link, file is open

Comment 1

[marina]

Attachment: a .zip file i used for testing

Comment 2

[pmock]

File attachments that can not be displayed inline do not display as a link.
This is behavior is changed from 4.7.  Reference the Compose Message UI spec.
See the table located under the attachment section for overview of new behavior.
 http://www.mozilla.org/mailnews/specs/compose/#Attachments

The real problem is that when 5.0 sent the message with the attached zip file,
it improperly encode the messages as
 Content-Type: text/plain;
 Content-Transfer-Encoding: quoted-printable

In general, it should encode it as
 Content-Type: application/x-zip-compressed;
 Content-Transfer-Encoding: base64

There is already a existing bug on this issue assigned to RHP.
I am marking this bug as a duplicate of bug 21907.

http://bugzilla.mozilla.org/show_bug.cgi?id=21907

*** This bug has been marked as a duplicate of 21907 ***

Comment 3

[pmock]

Verified as duplicate of 21907