On Fri, 12 Dec 2003, David Woodhouse wrote:
> Note that in addition to the false positive in the logs, the 503
> response given by Exim to the ESMTP client seems to be incorrect.
>
> The example in RFC2920 which precisely matches this situation shows a
> 554 response, not 503.
However, RFC 2821 says this:
- If there was no MAIL, or no RCPT, command, or all such commands
were rejected, the server MAY return a "command out of sequence"
(503) or "no valid recipients" (554) reply in response to the DATA
command.
I chose to use 503 because it makes more sense (to me) in the case when
DATA is sent without any RCPTs at all (e.g. even before MAIL). It's not
a major issue, but I believe Exim is in accord with the RFC.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book: http://www.uit.co.uk/exim-book
