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From: Florian Weimer <fw@deneb.enyo.de>
To: Richard Bradfield <bradfier@fstab.me>
Cc: gcc@gcc.gnu.org,  overseers@gcc.gnu.org,  gfortran <fortran@gcc.gnu.org>
Subject: Re: List-Id header being stripped
References: <3f4869fd-d852-a8a6-117f-e767a417ff95@codesourcery.com>
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Date: Mon, 09 Mar 2020 11:30:17 +0100
In-Reply-To: <20200309095158.6a5f8c29bcf447e852cdc335@fstab.me> (Richard
 Bradfield's message of "Mon, 9 Mar 2020 09:51:58 +0000")
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* Richard Bradfield:

> It appears that since the migration (or whatever happened on the list
> over the weekend), the List-Id header is also being stripped from
> outbound mail. The last GCC mail I have where the header is intact was
> from Friday 6th.

There weren't any List-Id headers before the migration.  If you
previously filtered on Sender: headers, you have to change your
filters.  Other filters (List-Post:, for example) may keep working
unchanged, but details will be vary according to how you set up your
filters.