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Re: Policy for posts from non-members


From: Jean Abou Samra
Subject: Re: Policy for posts from non-members
Date: Wed, 22 Feb 2023 23:24:18 +0100
User-agent: Evolution 3.46.4 (3.46.4-1.fc37)

Le mardi 21 février 2023 à 23:36 +0100, Jean Abou Samra a écrit :

Hi,
I've not been an admin of this list for very long, yet I'm already weary of telling people who post without being subscribed to the list that they should subscribe in order to avoid each of their messages being manually approved. I wonder what you (meaning everyone, but especially Mark, the other admin) would think about changing the list configuration to reject post from non-members instead of holding them on moderation, with a message such as
“Welcome to the lilypond-user mailing list. We apologize, but in order to prevent spam, we need you to subscribe to the list before you post. Please fill out the subscription form on https://lists.gnu.org/mailman/listinfo/lilypond-user.
Once you are subscribed, you will receive all posts to the list, so you can help out other people as well. However, if you only wish to interact with this list infrequently, you may disable mail subscription in your membership preferences after you have subscribed.
If you believe you are already subscribed to the list, it probably means that you accidentally posted from a different email address than the one you are subscribed with.
If you have any question or encounter problems, feel free to contact the list admins at lilypond-user-owner@gnu.org”
On the plus side, this means that instead of delaying the message until Mark or me looks at it, the feedback will come instantly.

An update on this:

It turned out to be a really bad idea. Fortunately, Bob Proulx, an admin on GNU's Mailman server, noticed the change and explained why.

The problem is backscatter. If a spammer sends a spam while making it look like it comes from a real address that is not subscribed to the list, the person this real address belongs to receives an automated message from the list, which is viewed as unsolicited. Not only is that bad for this person, but it leads to DNS blacklisting for lists.gnu.org, which affects all GNU lists badly.

I apologize for this; I didn't realize this implication at all. The change has been rolled back and things will just remain as they were before. Thank you Bob!

Jean

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