[e2e] moderation criteria awareness?

[David P. Reed]

Can anyone decode "the message headers matched a filter rule" that was 
applied in this case?
> -------- Original Message --------
> Subject: 	Your message to end2end-interest awaits moderator approval
> From: 	end2end-interest-bounces at postel.org
> To: 	dpreed at reed.com
> Date: 	Fri, 04 May 2007 16:48:51 -0700
>
>
>
> Your mail to 'end2end-interest' with the subject
>
>     Re: [e2e] Collaboration on Future Internet Architectures
>
> Is being held until the list moderator can review it for approval.
>
> The reason it is being held:
>
>     The message headers matched a filter rule
>
> Either the message will get posted to the list, or you will receive
> notification of the moderator's decision.  If you would like to cancel
> this posting, please visit the following URL:

Surely computers can be capable of (say) telling us *what* filter rule, 
and perhaps even telling us the human meaningful version of the reason 
for that rule, e.g. "sender is a known flamer" or "some blackhole 
vigilante site blackballed your MTA because Paul Vixie doesn't like them".

It would be nice to know why one's posts are rejected, perhaps lessening 
one's paranoia...

It's an "end to end" protocol issue when mail is not delivered to the 
endpoints named in the message, and instead stopped by an 
incomprehensible middlebox.