On 1/31/06, AdamT <adwulf@xxxxxxxxx> wrote: > > > IIRC, X headers don't necessarily need to be in any email... [snip] Here's a link to a page which sums it up far more succintly than I managed: http://www.bath.ac.uk/bucs/email/anatomy.shtml#xheaders "X- headers are user defined headers. They can be inserted by email client programs or applications that use email." -- AdamT 'Thank-you for not requesting read receipts'