Trouble reading attachments on OS X

I am sending e-mails with actionmailer and I have the following code to
send an e-mail with an attachment:

  @headers['Content-Type'] = "text/plain; charset=utf-8;

format=flowed"
@body[“application_id”] = app_id
unless (file.blank? || file.kind_of?(StringIO))
attachment :content_type => “multipart/mixed”,
:body => tempfile.read,
:filename => tempfile.original_filename,
:charset => “utf-8”
end

That works fine as long as I am reading the e-mails (with the
attachments) on a windows operating system. Strangely enough it does not
work on OS X. On Tiger for example this does not work. An image (jpg)
file works but a pdf file will not be readable. (Strange characters
only) I can read the e-mails on Mac but I cannot open the attachments.
The server is a debian sarge.

Any ideas?

Thanks a lot.

I am not sure about that but at least it happened on every e-mail client
it was tested. (So far on 2 Installations) Don’t know which e-mail
client those guys used - but I can get this information I think.

Sounds kinda weird that this is platform related like that. Does it
apply to all (or at least more than one) e-mail clients on OS X?

On Jan 18, 3:32 pm, Chris H. [email protected]