Re: New anti-spam measure on SRFI mailing lists Elf 29 Nov 2016 00:58 UTC

As Arthur said, it's very rare for non-subscribers to be sending legit

I have a further question on it: what is the use of a non-subscriber
posting in the first place, as they won't see the responses without
polling the list anyway?

I'm all for relieving the load on the list maintainers.



On Mon, 28 Nov 2016, Perry E. Metzger wrote:

> Date: Mon, 28 Nov 2016 16:05:00
> From: Perry E. Metzger <>
> Reply-To:
> To: Arthur A. Gleckler <>
> Cc:,,
> Subject: Re: New anti-spam measure on SRFI mailing lists
> 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
> dialog?
> 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