Re: z= question with X headers

Arvel Hathcock wrote:

Should we add some text like “signers MAY exclude X type headers when calculating the z= tag?”  I was polishing our implementation today and integrating it and turned on the z= tag wherein my test messages promptly grew really large due to thousands of X headers (from SpamAssassin and other sources too).

The z= tag allows you to put as many or as few headers in it as you want. I typically
only put subject, from, to and maybe a few others that I regularly see getting toasted.
Was this actually unclear? If so it might make sense to be more explicit.

          Mike