Charles Lindsey <chl(_at_)clw(_dot_)cs(_dot_)man(_dot_)ac(_dot_)uk> writes:
Now, AIUI, most transports are munge free. All 8 bits get through. The
only exception I am aware of is sendmail, which is said to use the 8th
bit of some headers for internal flags. Does anyone know more detail of
this (it certainly seems to be able to accomodate 8 bits in the Subject
line AFAICS)?
My understanding is that sendmail uses characters in the ISO 8859
unassigned code space (the ones that correspond to control characters when
the eighth bit is stripped). So you won't notice that effect if you're
using European characters, but you may notice with other character sets.
--
Russ Allbery (rra(_at_)stanford(_dot_)edu)
<http://www.eyrie.org/~eagle/>