[Mailman-Users] Content Filtering

Mark Sapiro mark at msapiro.net
Fri Oct 19 20:24:15 CEST 2012

Roger Richmond wrote:
>Pass Mime Types-

The above two lines are redundant because you are alreaty accepting all
multipart types with the first line.


You are accepting attached images. This means any message with an
attached image will be multipart after content filtering and will
result in the footer being added as an attachment to those messages.

>Edit collapse alternatives and Edit convert HTML are both YES.
>The problem - one of the recipients' messages keeps bouncing with this error
>The attached message matched the ukmastocytosissupport_ukmasto.org mailing
>list's content filtering rules and was prevented from being forwarded on to
>the list membership.  You are receiving the only remaining copy of the
>discarded message.

The message being bounced is a text/html message as opposed to a
multipart/alternative message with text/plain and text/html
alternatives. Since you don't accept text/html, the entire message is
filtered out.

You want to add text/html to the pass_mime_types list. Doing so will
accept this message and convert it to text/plain. It won't affect
multipart/alternative messages as they are already being collapsed to
the first (text/plain) part.

Note that if you encounter problems with the conversion of HTML to
plain text, see the FAQ at

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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