dwmw2 at infradead.org
Fri Oct 16 11:21:31 EDT 2020
On Fri, 2020-10-16 at 15:32 +0100, Kevin McCarthy wrote:
> Anyone else been unsubscribed from this mailing list?
> I just got a "You have been unsubscribed" email from
> get_iplayer-bounces at lists.infradead.org
> even though I didn't post any messages.
> I'm with VirginMedia and I haven't personally changed anything.
> Had a confirmation from the mailing list after resubscribing so I guess it's
> ok now.
Probably a combination of mailer misconfigurations.
What often happens is that someone's mail admin buys in to one of these
still spam-avoidance snake oil schemes, and publishes a record
promising to the world that, e.g. "mail From:xxx at example.com will never
come from anywhere except my own mail server, directly". That's
Someone @example.com then sends a message to a mailing list, which does
the correct thing of sending it on with the From: header intact, since
that indicates the author of the message — and with a Sender: header
indicating that it was actually the list software that sent this copy
of the message.
A second mail misconfiguration is needed at the final recipient's end,
where they look at the message, look at the misguided promise from the
original sender's email domain, and decide to reject the message as
If a recipient bounces too many list messages, they get removed from
the list as a non-functioning address. I suspect that's what just
happened to you.
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