On Mon, 29 Mar 2004, Darren Coleman wrote:
> The problem is, SA can only assess the spammyness of an email AFTER the
> headers have been received (i.e. From, To, etc) by which point it would
> be impossible to return a true 550 error.
>
> Daz
It would seem so but the SMTP protocol allows you to return any
5XX status code at any stage, so you are allowed to return a 550
at the final 'DATA' ACK. You could argue the 'true'ness of that
action but the protocol says that it should be honored.
(Given that there's no honor among spammers, this is probably a
pointless exercise anyway. ;(
This is easily do-able if you've got SA integrated into your MTA
at the SMTP level such as sendmail + SA + milter
--
Dave Funk University of Iowa
<dbfunk (at) engineering.uiowa.edu> College of Engineering
319/335-5751 FAX: 319/384-0549 1256 Seamans Center
Sys_admin/Postmaster/cell_admin Iowa City, IA 52242-1527
#include <std_disclaimer.h>
Better is not better, 'standard' is better. B{
