[Mailman-Users] Rejection Message

Martin Dennett md6969 at gmail.com
Sun Nov 4 20:30:47 CET 2007

And just to throw a bit more fuel on the fire, my reply to Mark bounced 
as "Reason: spam source blocked"


Mark Sapiro wrote:
> Martin Dennett wrote:
>> When posting to a list, if I reply to a reply to a reply, I get a 
>> rejection from the server saying "The message's content type was not 
>> explicitly allowed" - but prior to this, the messages get accepted. Any 
>> ideas what may be causing this, and what the admin can do (no command 
>> line access) to prevent this from happening, please?
> The reject is because after content filtering has been applied, there
> is nothing left in your message. The list admin can adjust content
> filtering or turn it off, but this is probably not a good solution.
> The problem is in the way your MUA is creating this message. It it most
> likely, being posted as an HTML only message. I am only guessing, but
> here's what I think is happening:
> The list is set to remove text/html parts. You post a text/plain
> message to the list. Someone replies to this message and the reply is
> multipart/alternative with text/plain and text/html alternatives and
> the text/plain alternative reaches the list, or maybe the reply is
> html only and it too is rejected by the list. However, in either case,
> you are a direct addressee of the reply so you receive it in its
> original form.
> Further, your MUA settings include things like "reply to messages in
> the format received" and maybe "when sending 'rich text' send rich
> text only". This causes your MUA to compose and send an html only
> message which is rejected by the list.
> If you have the original reply and/or a saved copy of your reply to
> this reply, examine the raw messages to determine the MIME
> structure/content-types to see what's being sent and received.
> You may also wish to look at the list archive to see if the original
> reply is there.
> The solution is to adjust your MUA to send plain text only and to not
> reply to messages in the format in which they are sent.

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