Re: What would happen to Challenge/Response if ...
On Thu, 2003-10-23 at 02:53, Steve C. Lamb wrote:
> On Thu, Oct 23, 2003 at 05:32:59PM +1000, Rob Weir wrote:
> > Hm, now I check, 27253 of those did *not* come from my secondary MXs.
> > That is a stupid amount of crap. In fact, it is 3.8985GB of crap.
> > Imagine that instead of dropping that shit on the floor, you sent a CR
> > query. You've just doubled the number of mails flying around (thought
> > not the volume, of course).
>
> Ya forgot to mention that of those 27253 messages (just using your count
> as an example) damn nead close to 0 are likely to reach an infected host since
> SWEN spoofs and lots of C-R systems fall for it.
>
> BTW, just curious how you detect SWEN before the MTA gets it? Usually
> mine is post-contact on at least one occasion. After that it was firewall but
> now it is just drop on a RCPT test. Hrm, should make it a HELO test. :/
I've got a simple "pre-fetchmail" script that deletes any emails
larger than 130000 bytes while still sitting on the pop server.
--
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Ron Johnson, Jr. ron.l.johnson@cox.net
Jefferson, LA USA
"...always eager to extend a friendly claw"
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