[Mailman-Users] pass mime types

Mark Sapiro mark at msapiro.net
Sat May 3 19:11:47 CEST 2008


Rueben wrote:

>Under content filtering there is a field labeled: Remove message attachments that don't have a matching content type.
>
>In the box I have:
>multipart/mixed
>multipart/alternative
>text/plain
>
>Can someone explain what each of those entries means, and give examples as to what kind of files would be affected by each filter?


Those entries are the MIME content types that content filtering will
accept. Any message part with a content-type other that those three
will be filtered out. For example, in a message with the following
structure

multipart/alternative
    text/plain
    text/html

The multipart/alternative part will be accepted and it's sub-parts
examined. Of those, only the text/plain part will be accepted and the
text/html part will be removed.

For this message

multipart/mixed
    multipart/alternative
        text/plain
        text/html
    application/msword

again, only the text/plain part will be accepted and the text/html and
application/msword parts will be removed.

For this message

multipart/related
    multipart/alternative
        text/plain
        text/html
    image/jpeg

nothing will be accepted because the entire multipart/related message
content type is not accepted.

-- 
Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan



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