Tickets :: Comment on [#13835] Horde breaks attachments

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Comment	> When I attach an .es3 (mime type application/vnd.eszigno3, uploaded > by the browser as application/octet-stream) file and the destination > SMTP server supports 8BITMIME ESMTP extension, Horde encodes the > attachment as 8bit and not as base64 as it should. > This means the attachment will be converted to CRLF line endings and > a CRLF will be inserted after 998 characters by the SMTP server if a > line is longer than that, therefore breaking the XML parser on the > receiver end and breaking any checksum validations. > > If I disable 8BITMIME extension, the attachment is encoded as base64 > and is not modified at all. > > AFAIK, Horde should base64 encode any non text/* mime types. > > The attached file doesn't have any long lines, but from the SMTP > capture it can be seen that it's not base64 encoded if the 8BITMIME > extension is announced. > > I can upload long line files on request of course.
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