Tickets :: [#13076] mail with alternative part not correctly displayed

6.0.0-beta1

7/20/25

Summary	mail with alternative part not correctly displayed
Queue	IMP
Queue Version	6.1.7
Type	Bug
State	Not A Bug
Priority	1. Low
Owners	slusarz (at) horde (dot) org
Requester	maciej.uhlig (at) us (dot) edu (dot) pl
Created	03/26/2014 (4134 days ago)
Due
Updated	04/01/2014 (4128 days ago)
Assigned	03/31/2014 (4129 days ago)
Resolved	04/01/2014 (4128 days ago)
Github Issue Link
Github Pull Request
Milestone
Patch	No

04/01/2014 07:48:15 AM	Michael Slusarz	Comment #6	Reply to this comment
It's a broken message: Understood. Looks like Thunderbird is less strict but more user friendly. Thank you. Thunderbird displays that message? shudder User friendly < Security.

04/01/2014 07:39:59 AM	maciej (dot) uhlig (at) us (dot) edu (dot) pl	Comment #5	Reply to this comment
It's a broken message: Understood. Looks like Thunderbird is less strict but more user friendly. Thank you.

04/01/2014 07:05:27 AM	Michael Slusarz	Comment #4 State ⇒ Not A Bug	Reply to this comment
It's a broken message: Content-Transfer-Encoding: utf8 This is an invalid encoding. It's not parsed correctly by the IMAP server, for example: C: 9 UID FETCH 60983 (BINARY.PEEK[1.2]) S: * 15 FETCH (UID 60983) S: 9 NO [UNKNOWN-CTE] Unknown Content-Transfer-Encoding. Command 9 took 0.0007 seconds. Per RFC 2045: Any entity with an unrecognized Content-Transfer-Encoding must be treated as if it has a Content-Type of "application/octet-stream", regardless of what the Content-Type header field actually says. Thus, we accurately indicate that there is no alternative part that can be displayed, since both alternatives have invalid CTEs and thus must be treated as application/octet-stream, which we are unable to display inline.

04/01/2014 06:20:58 AM	maciej (dot) uhlig (at) us (dot) edu (dot) pl	Comment #3	Reply to this comment
Please send to slusarz@horde.org Message has been sent.

03/31/2014 09:10:29 PM	Michael Slusarz	Comment #2 Priority ⇒ 1. Low State ⇒ Feedback Assigned to Michael Slusarz	Reply to this comment
Due to the nature of the problem I'll send the message source privately to the IMP developer in case he's interested. Please send to slusarz@horde.org

03/26/2014 08:08:20 AM	maciej (dot) uhlig (at) us (dot) edu (dot) pl	Comment #1 Priority ⇒ 2. Medium Type ⇒ Bug Summary ⇒ mail with alternative part not correctly displayed Due ⇒ 03/27/2014 Queue ⇒ IMP Milestone ⇒ Patch ⇒ No State ⇒ Unconfirmed	Reply to this comment
I got a mail which is clearly spam. The technical problem is the structure of the mail which is correctly seen in Thunderbird, but it's not seen in the newest IMP. The mail has "Alternative (68 KB)" information and there is a message "There are no alternative parts that can be displayed inline.". Clicking on "Alternative" produces empty popup window. I feel IMP doesn't know how to display the message. Moreover the message contains several "This part contains an attachment that can not be displayed within this part:" informations. They are also seen as nice images in Thunderbird. Due to the nature of the problem I'll send the message source privately to the IMP developer in case he's interested.