List Messages Being Disrupted

Greg Newby gbnewby at
Thu May 6 09:59:25 PDT 2021

Hi, Karl. We do have a system-wide spam filter, but no specific filtering for the cpunks list. For example, no blacklists of who can subscribe. Any subscriber email address can post anything. Modulo that standard anti-spoofing mechanisms (mainly SPF) may cause rejection of a post if it seems to come from a spoofed email address. 

I also noticed that the filter generated a false positive, as you see below.

This seems to be a very infrequent occurrence. I could probably figure out how to tune down the spam filter, if such "false positives" were a major distraction. It didn't bother me very much, since indeed the flagged message was rather spammy.

Best regards to all,
  Greg (your current cpunks list maintainer)

On Thu, May 06, 2021 at 06:09:58AM -0400, Karl wrote:
> To me the email at
> indicates that messages are likely being disrupted somehow.
> To me, it does not really show whether that is happening at pglaf, an isp
> or government, or the behavior of the poster of the message.
> I have heard others (James) complain of spam bouncing on this list.  I have
> never received a spam bounce myself.  I thought Greg stated some months ago
> that there was no spam filter on the host.
> The message would be _far_ more credible if it contained an actual raw copy
> of the bounce email attached.  But it still looks incredibly credible.
> The correct solution here is cryptographic message delivery.  It is clear
> the people running this list are being harmed, that there is no easy way,
> already, to prove what actually happened around that spam bounce.

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