I have seen a few messages on this list regarding handling 'out of office' auto-replies. However I do not see a final resolution. What is the best practice to filter auto-replies to list: header filter or postfix milter-reject or something else?
We are running dockerized Mailman 3 version 1.3.4. A list user auto-replied their vacation message to list and then the listserv created a chain-reaction of continuously replying to auto-replies by that user. There isn't really a good header option to filter from, as the subject seems to be randomized. For example:
From <SENDER ADDRESS> Tue May 4 19:02:29 2021 From: Sender Name <SENDER ADDRESS> To: <LIST ADDRESS> Subject: [electronics-daq] Re: 25ad Date: Tue, 04 May 2021 20:59:57 +0200 Message-ID: <A2FB195E-5261-4F26-AF19-7AFE0B0632A5> In-Reply-To: =?utf-8?q?=3C0101017937874647-cf4b59ca-737e-4db0-9a01-85d9d43c8?= =?utf-8?q?d68-000000=40us-west-2=2Eamazonses=2Ecom=3E?= MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7283775935526227777=="
--===============7283775935526227777== Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable
Thank you,
Gary