Jan is correct. The outer message needs to be multipart/mixed. That 
message should contain 2 parts - the multipart/related message with 
the HTML and images, and the PDF. Putting the PDF inside the 
multipart/related isn't correct.

Let me explain how the message looks like:



- There is an text/html and a text/plain segment. Yes, these two are 
alternative of each other, but most mailreaders pick the text/html 
segment to display.



- The text/html segment has two inlined images: the logo and the fax preview



- The PDF fax itself is an attachment.



When changing to multipart/alternative, the mailreaders I tested it on 
will display the all the attachments on its own, depending on which 
selected.



When changing to multipart/related, it displayed the text/html one 
with the inlined images and the attached pdf.



When changing to mutlipart/mixed, it displayed the text/html but 
failed to load the images or to display the attachment.



I even went so far as to remove the text/plain attachment, it made no 
difference for IMP.



I use the perl5 module MIME::Lite to create the messages, and used 
their example called "Send an HTML document... with images included!" 
as my example.



Hope this will clear up things a little bit, Edwin

AFAICS the message has a wrong mime type. It should be 
multipart/alternative, not multipart/related.

The filename "imap4" was originally "imp4". The problem has nothing to 
do with the IMAP protocol in any way shape or form.

Please see the email at http://www.mavetju.org/~edwin/imap4-fails.txt



This email is displayed properly with horde2/imap3, but is not with 
horde3/imap4; All I get is:



<pre>Date:           Tue, 18 Jan 2005 09:38:17 +1100 (EST) [09:38:17 EST]

From:          Barnet DeskFax operator <faxmaster@barnet.com.au> Australia

To:          Edwin Groothuis - fax <61292100600@fax-processing.barnet.com.au>

Subject:          Fax from 02 9335 3000 to +61 2 9210 0600

Headers:          Show All Headers

<i>There are no parts that can be displayed inline.</i>

</pre>



Suggestions?