Keith Moore writes:
p.s. these days almost all SMTP servers can deal with 8bit message
bodies (NOT headers) even if they don't advertise the 8bitmime
extension. so there are at least a few implementations that just
send 8bitmime messages without converting, and they mostly seem to
get away with it. it's certainly a lot simpler, and these days, it
may even be less error-prone. it's easy to write an 8-bit to 7-bit
converter that corrupts messages.
Spammers just-send-8. In this day and age, it probably is a bad idea to
do what spammers do: So many people are fed up and will filter on
anything that looks good, just to get rid of some spam.
I noticed that stock postfix can filter on just-send-8 now.
--Arnt