On (2002/12/16 21:09), Philip Hazel wrote:
> On 16 Dec 2002 michael@??? wrote:
>
> > the following trivial patch allows to configure the maximum number of
> > unrecognised SMTP commands. I don't know why 5 was used as default.
>
> To allow humans who are testing SMTP connections manually to make a few
> typos.
>
> > To me, it seems as if a lower value might keep more spam away.
>
> Do spammers send unrecognized commands? I don't see why they would. I
> don't think changing this will make any difference to spam. The check
> was implemented to alleviate the problems caused by some insecure web
> features.
Note that, as of exim-4.12, NOOP is recognized as a non-mail command
with respect to the maximum number of non-mail commands allowed in an
SMTP session.
I don't think this makes sense. Software I wrote uses NOOP as a
keep-alive when talking to Exim.
