Missing recent email in archives

Is something wrong with the email archives? I recevied this email
today:

Date: Fri, 17 Dec 2021 09:41:32 +0000
From: Chris Lowder <clowder(at)hey(dot)com>
To: pgsql-docs(at)lists(dot)postgresql(dot)org, Bruce Momjian <bruce(at)momjian(dot)us>
Message-ID: <b4093b5a1383fe157e7dfd52606f4173352fd4fb(at)hey(dot)com>
In-Reply-To: <20211216205232(dot)GA30462(at)momjian(dot)us>
Subject: Re: 11.7. Indexes on Expressions

and usually I can search it almost immediately in the PG email archives,
but this returns a not found error:

https://www.postgresql.org/message-id/b4093b5a1383fe157e7dfd52606f4173352fd4fb@hey.com

--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com

If only the physical world exists, free will is an illusion.