6.0.0-beta1
7/26/25

[#4367] forwarding multipart/related messages
Summary forwarding multipart/related messages
Queue IMP
Queue Version 4.0.3
Type Enhancement
State Rejected
Priority 1. Low
Owners
Requester robin.west (at) dal (dot) ca
Created 08/30/2006 (6905 days ago)
Due 08/30/2006 (6905 days ago)
Updated 09/03/2006 (6901 days ago)
Assigned
Resolved 09/03/2006 (6901 days ago)
Milestone
Patch No

History
09/03/2006 05:09:55 AM Chuck Hagenbuch Comment #4
State ⇒ Rejected
Reply to this comment
Rejecting as a duplicate of ticket 3381.
09/03/2006 03:38:08 AM Michael Slusarz Comment #3 Reply to this comment
Robin, it would be extremely helpful if you could try the new
algorithm that is in HEAD (the CVS version).

Michael, would you say this falls under the same umbrella, or is
multipart/related entirely seperate from multipart/alternative?
I would say this has already been addressed in HEAD.  As mentioned 
elsewhere, the only way we can guarantee accurate forwarding of a 
message is embedding via a message/rfc822 part - which is one of the 
forwarding options offered in HEAD.
08/31/2006 07:21:48 PM Chuck Hagenbuch Comment #2
State ⇒ Feedback
Reply to this comment
Robin, it would be extremely helpful if you could try the new 
algorithm that is in HEAD (the CVS version).



Michael, would you say this falls under the same umbrella, or is 
multipart/related entirely seperate from multipart/alternative?
08/30/2006 05:20:41 PM robin (dot) west (at) dal (dot) ca Comment #1
Priority ⇒ 1. Low
Type ⇒ Enhancement
Summary ⇒ forwarding multipart/related messages
Due ⇒ 08/30/2006
Queue ⇒ IMP
State ⇒ New
Reply to this comment
I don't have a very in-depth understanding of MIME types, and I'm not 
well-versed on what the proper standards are for how this stuff should 
work, but I've noticed various different behaviours amongst mail 
clients when forwarding multipart messages. Specifically if I have a 
multipart/related message (eg. some HTML with an embedded image), when 
I forward it (to myself) I get these results:



Outlook Express:

---multipart/related

------text/plain

------text/html

------image/gif



Thunderbird:

---multipart/mixed

------text/plain

------message/rfc822

---------multipart/related (containing all parts of the original message)



IMP Webmail:

---multipart/mixed

------text/plain

------multipart/alternative

---------text/plain

---------text/html

---------image/gif

------text/html

------image/gif



I'm not sure which of these examples follows the "standard" (is there 
a standard?). However, IMP's result seems to include an extra copy of 
each part of the original message, and the original copy seems to show 
up as a text/plain section when viewed. Is there improvement that can 
be made here that would make IMP's forwarding behaviour more closely 
match that of Outlook's (which seems to produce a pretty clean result)?



I took a look at ticket 3381, but most of the discussion there is too 
technical for me so I can't tell if this issue is related to that one. 
I also took a look through the release notes for v4.0.4+ (we're still 
on 4.0.3) but didn't see anything relating to this. If changes have 
been made that address this issue please disregard. Thanks.








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