On 10/10/2010 09:59 PM, Tom Horsley wrote: > > The mail client is usually the one that adds the > message id. If it doesn't, then gmail is the one > adding it. As far as I know - the message ID is the responsibility of the MTA not the MUA - the MUA creates or appends to the References: header and the In-Reply-To header - these can be used for threading. g -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines