Administrivia: adding List-Id: header?

[Dylan Reinhold]

On 09/05/2011 03:01 AM, jang at ioctl.org wrote:
We have -Post, -Subscribe, -Owner, -Unsubscribe, but messages are coming
out without a List-Id: header.
Would it be possible to tweak the mailing list config to add this please?

Cheers,
jan
PS. Currently using gmail for this; it can filter on that header but not
on arbitrary headers, it seems.
In gmail you can add a filter in the "Has the words" area :
list: kernel at crater.dragonflybsd.org
http://mail.google.com/support/bin/answer.py?answer=7190

Dylan