Keith Moore <moore(_at_)cs(_dot_)utk(_dot_)edu> writes:
III. Format of automatic responses
- envelope return address (avoid loops!)
- headers (to, from, subject, auto-submitted)
- content (should probably limit size, content to limit
DoS attack potential - e.g. should not allow sender to
use the responder as a relay for viruses)
- plain text, English version included, involved addresses have
to be in Internet syntax
Have a look at
http://www.exim.org/pipermail/exim-users/Week-of-Mon-20020603/039366.html
to see why this is required, or post to BUGTRAQ. :-/