Marcelo E. Magallon <mmagallo@debian.org> wrote:
> On Tue, Jan 14, 2003 at 10:01:51PM +0100, Emile van Bergen wrote:
> > [...] I care even less that you may have to switch to a different MUA
> > if that is what it takes to make your posts standards compliant.
> ^^^^^^^^^^^^^^^^^^^
> Chapter and verse?
RFC 2822 3.6.4. References and In-Reply-To is a 'SHOULD'.
cu andreas