Re: New anti-spam measure on SRFI mailing lists Perry E. Metzger 29 Nov 2016 00:05 UTC

On Mon, 28 Nov 2016 10:31:25 -0800 "Arthur A. Gleckler"
<> wrote:
> So here's the change: starting now, messages sent by
> non-subscribers (or from non-subscribed addresses) will not be
> reviewed promptly, and may be deleted without any review.
> Non-subscribers will still be able to send to srfi-editors.  Also,
> as before, only editors (me) will be able to send to srfi-announce.

I think this may be suboptimal because it provides poor feedback to
people making legitimate posts without being subscribers. They may
never know their message was rejected.

Could you instead block non-subscribers early, even at the SMTP

I run several large mailing lists and use postfix plugins to block
non-subscribers from posting to them at the SMTP dialog. This means
that people posting in error get prompt error messages *and* that my
SMTP queues remain clean.

Perry E. Metzger