Thunderbird does not display images in email messages

[Tim]

Markus Schönhaber:
>> Thunderbird generally can handle displaying images referenced via a 
>> cid URL. I often get mails containing images which are referenced this 
>> way and are displayed correctly.
>> If you're viewing this post in HTML, you should see an image here 
>> (provided the list software hasn't stripped it) which is referenced 
>> via a cid URL:
>>
>> Why this doesn't work in the provided sample mail, I don't know. Maybe 
>> (or maybe not) it's related to this:
>> https://bugzilla.mozilla.org/show_bug.cgi?id=61815


jd1008:
> Sorry to say that I find this totally unhelpful and it does not address
> the sample message I provided, which TB is unable to handle.

Did you read the bugzilla and look at the other message headers, to see
whether the overall HTML message content-type headers in yours was like
the bugzilla?

With a multipart message (text and pictures), there's one type of header
you could expect.  With a multipart alternative (a text version with a
HTML version, there's another type.  Some mail clients, particularly
Microsoft ones, are infamous for creating outright broken message, so
all bets are off regarding proper interpretation.

Here, using Evolution, I could see the disco dancing Fedora panda, and I
noticed that its content ID was in the more usual form that looks
somewhat like an email address (something at something), whereas the
failing message had a simpler (RaNdOm) kind of ID.  I don't know if
that's an extra consideration, or not a problem at all.

-- 
tim at localhost ~]$ uname -rsvp

Linux 3.18.7-100.fc20.i686 #1 SMP Wed Feb 11 21:16:53 UTC 2015 i686

All mail to my mailbox is automatically deleted, there is no point trying
to privately email me, I will only read messages posted to the public lists.

George Orwell's '1984' was supposed to be a warning against tyranny, not
a set of instructions for supposedly democratic governments.