[ripe-list] Spam on 'policy-announce'?

Dear [to whom it may concern @ RIPE NCC],

just to serve on my curiosity - how did this email:

===
Subject: [policy-announce] Cheapest cost 1~2USD Bluetooth Beacon-K15L!!
Date: Tue, 22 Nov 2022 15:17:56 +0800 (CST)
From: Fairy <sales6 at kkmcn.com>
Reply-To: Fairy <sales6 at kkmcn.com>
To: policy-announce <policy-announce at ripe.net>
Message-ID: <b1a173bd-1f6d-4d09-89fd-2e0f5c9b8124 at kkmcn.com>
===

make it to the list?

As I'd suppose that any '-announce' RIPE [NCC] list is strictly sender 
filtered...

I wonder if anyone else subscribed to this list and also to 
<policy-announce at ripe.net> has seen this - as it is *NOT* archived at:

https://www.ripe.net/ripe/mail/archives/policy-announce/2022-November/date.html

and I furthermore know of at least one subscriber of 
<policy-announce at ripe.net> who has not gotten it into their inbox either.

This, of course, might be the result of tight spam measures directly "in 
front" of the archive and the inbox, respectively.

Thanks & best,

	-C.