[kmail] [Bug 136804] Wrong "Help" for MDN (Message Disposition Notifications)

Rugart Fertsch rfertsch at gmail.com
Wed Apr 22 20:46:58 BST 2015


https://bugs.kde.org/show_bug.cgi?id=136804

--- Comment #5 from Rugart Fertsch <rfertsch at gmail.com> ---
Created attachment 92168
  --> https://bugs.kde.org/attachment.cgi?id=92168&action=edit
image with "new" (present) Help text

Situation is unchanged. The 'Help' text about MDNs is now, with the latest 
available kmail (4.13.3-0ubuntu0.1), still the same wrong one as with kmail 
1.9.5. Only the background color changed, from yellow to black, as one can see 
at the 2 attached screenshots. 
 If the author of an e-mail message requests a disposition notification, and 
the receiver uses kmail and the message is deleted (deleted by the user 
himself without opening it, or deleted by a configured filter), no MDN is sent.
That's why the 'Help' text is wrong - the message sender does NOT get to know 
if the message was deleted. 
 And not sending a MDN upon message deletion doesn't conform to 
https://tools.ietf.org/html/rfc3798  and
https://tools.ietf.org/html/draft-ietf-appsawg-mdn-3798bis-02 .
 A MDN should be sent even if the message is deleted.
 And there is more about how kmail deals with receiving messages containing 
MDN requests:
 When configuring kmail / Security / Message Disposition Notifications , Policy 
"Deny" is not respected. Policy "Always send" isn't either. In both cases, the 
user is asked whether he/she wants to send a 'denied' or normal response - 
there shouldn't be such a question, since the general policy was already 
configured to "Always send" or to "Deny" . This question should only appear if 
the configured policy is "Ask". 
 A screenshot, kmail4.13.3_MDN_question.png, is attached (at the next comment).
 Now, about what happens when answering the question: there are actually 3 
answers:
"Ignore"  sends nothing (which is the expected behavior).
"Send 'denied' " and "Send" : both send exactly the same text: 
 "The message sent on (date time) to (address)  with subject (...) has been 
displayed. This is no guarantee that the message has been read or understood."
 This is coherent with the "Send" answer, but if the user answered "Send 
'denied' ", the text should be quite different .
 Thanks,
   Rugart Fertsch

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