Re: [Exim] SMTP protocol violation complaint -- false positi…

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Autor: Matthew Byng-Maddick
Data:  
Para: exim-users
Assunto: Re: [Exim] SMTP protocol violation complaint -- false positives.
On Fri, Dec 12, 2003 at 02:23:53PM +0000, Philip Hazel wrote:
> On Fri, 12 Dec 2003, David Woodhouse wrote:
> > Note that since the client sent the 'RCPT TO:' and DATA' lines in a
> > single group, as permitted by RFC2920, it had no way of knowing that the
> > RCPT TO was going to be rejected. It is not at fault, and is behaving
> > perfectly correctly.
> Which release of Exim?


In 4.30 (smtp_in.c):
|     case DATA_CMD:
|     if (sender_address == NULL)
|       {
|       done = synprot_error(L_smtp_protocol_error, 503, NULL,
|         US"MAIL command must precede DATA");
|       break;
|       }

|
|     if (!discarded && recipients_count <= 0)

          ^^^^^^^^^^
I take it this is supposed to fix it?


|       done = synprot_error(L_smtp_protocol_error, 503, NULL,
|         US"valid RCPT command must precede DATA");
|       break;
|       }


If so, should you not return an error to DATA, but not log a protocol error,
and should this check (or similar) not also be implemented for "MAIL FROM",
as that is valid in the middle of a RFC2920 group.

MBM

--
Matthew Byng-Maddick         <mbm@???>           http://colondot.net/