[ mailman-Bugs-1461279 ] Filtering content while allowing HTML messages impossible

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Bugs item #1461279, was opened at 2006-03-30 12:41
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Category: None
Group: 2.1 (stable)
Status: Open
Resolution: None
Priority: 5
Submitted By: - (psy-q)
Assigned to: Nobody/Anonymous (nobody)
Summary: Filtering content while allowing HTML messages impossible

Initial Comment:
I hope this is a genuine bug. I'll use 2.1.7 in these    
examples, though I verified this behavior in 2.1.5    
also.    
    
I have a mailing list configured as such:    
    
filter_content = 1    
filter_mime_types = ''   
pass_mime_types = """multipart/mixed   
multipart/alternative   
text/plain   
text/html"""   
collapse_alternatives = 0   
convert_html_to_plaintext = 0   
filter_action = 2   
   
And yet all HTML messages are automatically stripped   
of HTML, have their attachments removed and are    
immediately posted to the list.   
  
The originals are sent as multipart/alternative with  
two attachments, one the text/plain rendition of the  
message and one the text/html original. It seems to 
be okay, user agents can render this message as 
intended. All that remains when delivered by Mailman 
is the text/plain bit, though. 
  
Shouldn't this list configuration let HTML mails  
through? I can't see a reason why Mailman should 
remove the HTML silently with these settings. 
 
If filter_content is turned off, sending HTML 
messages works. 
 
(I know it's not polite to send HTML messages through 
mailing lists, but some of my users insist.) 

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