On Wed, 21 Aug 2002, Chris Edwards wrote:
> Exim checks the syntax of HELO and EHLO commands for incoming SMTP mail,
> and gives an error response for invalid data
>
> which I suppose it does. But this is hardly rejecting the mail. Shurely
> it needs to 550 every subsequent RCPT command ?
I guess I was "being liberal in what I accepted" when I coded Exim so as
not to require HELO before accepting a message. This was copied from
Smail, IIRC.
I propose the following compromise: if HELO/EHLO has been rejected
because of a syntax error (or indeed, for any reason), then reject all
subsequent commands (except RSET, HELP, QUIT, NOOP) until a valid
HELO/EHLO has been received.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
