> You can filter the TZ list quite nicely by using the "Resent-From" > header or the presence of tz at lecserver.nci.nih.gov as a recipient. No > reason to pollute the subject line. Indeed. Or otherwise look for the X-Mailing-List header: X-Mailing-List: <tz at elsie.nci.nih.gov> See also http://www.tux.org/lkml/#s3-18