[Users] [Bug 2966] New: Incorrect MIME type recognition of some files when attached

noreply at thewildbeast.co.uk noreply at thewildbeast.co.uk
Fri Jul 12 19:00:41 CEST 2013


http://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=2966

            Bug ID: 2966
           Summary: Incorrect MIME type recognition of some files when
                    attached
    Classification: Unclassified
           Product: Claws Mail
           Version: 3.9.1
          Hardware: PC
                OS: Windows XP
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Other
          Assignee: users at lists.claws-mail.org
          Reporter: LoseDanger at mailinator.com

Claws Mail does not set the proper MIME type for some filetypes, such as PDFs.

When I attach a PDF file to email, it is attached with MIME type
application/octet-stream instead of the correct application/pdf.

The same happens with ZIP files and some other files. I suggest that claws
implements correct labeling of at least the media types listed on
http://www.iana.org/assignments/media-types

Some nice "background reading" on Wikipedia:
https://en.wikipedia.org/wiki/Internet_media_type

Example instructions:

1) Create a new email message.

2) Add a new attachment of type PDF.

3) Observe that it is identified as MIME type application/octet-stream instead
of application/pdf.

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