[Mailman-Users] Newbie Question -- Attachments (again)
msapiro at value.net
Fri Oct 15 21:02:31 CEST 2004
Newman, Linda (newmanld) wrote:
>I have read through the FAQ and tried to locate every piece of information I
>could about MIME types and attachments, esp. reading 4.39, and I'm still
>confused, so am hoping that others can provide some simple clarification.
>What I'd like to do:
> 1) Prevent all attachments from going through. (Note that if my settings
>below are too broad and will result in rejecting messages that aren't really
>attachments, let me know.)
> 2) Accept html, or real text format formatted messages without
>translating them to plain text. However, if this means that other formats
>such as pdf, word, etc., would also have to be accepted, than I'd give up on
It doesn't, you can do it - except see below regarding
> 3) Send a notice automatically to a sender if their attachment has been
I don't think you can do this if the whole message is not rejected.
> 4) Send the remaining plain text part of the message to the list without
You can do this, but I don't think you can get a reject notice to the
poster in this case.
>My current 'Content Filtering' options (see below) are rejecting attachments
>and html-formatted messages. The entire message is rejected -- even if
>there are remaining plain text parts. RTF formatted messages are, however,
>converted to plain text. No notice of a rejection is sent to the poster, so
>I've configured the last option to send the message to the e-list owner, so
>that the owner could manually notify users.
This will only work if the entire message is filtered and nothing is
left for the list.
>Note that I don't seem to have access to the unix shell.
>My current list Content Filtering options are as follows:
>Should Mailman filter the content of list traffic according to the settings
>below? -- Yes
>Remove message attachments that have a matching content type. <none listed>
>Remove message attachments that don't have a matching content type. -- I've
>listed two types -- text/plain <and, on a separate line> text/html
This won't work. It's too restrictive it will only allow single part
messages whose content-type is text/html or text/plain. You also need
to allow the text/plain and/or text/html parts from multipart
messages. Thus you must add to the above types
Also, you may wish to add
to allow text/plain and text/html parts from some forwarded messages.
Note that allowing these types does not allow the entire multipart
through, it just alows its sub-parts to be examined rather than
Further, note that if the message contains a multipart/alternative part
with both a text/plain alternative and a text/html alternative, only
the first alternative which is always supposed to be the text/plain
To get HTML through to the list you either have to disallow text/plain
or make sure the HTML is not in a multipart/alternative part with a
text/plain alternative. This is difficult if not impossible to do with
>Should Mailman convert text/html parts to plain text? No
>Action to take when a message matches the content filtering rules. Forward
>to List Owner
Mark Sapiro <msapiro at value.net> The highway is for gamblers,
San Francisco Bay Area, California better use your sense - B. Dylan
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