Fwd: RE: Dealing with MailScanner overloads

[Antony Stone]

On Sunday 14 September 2003 7:17 pm, Michael Svendsen wrote:

> Why not send the relay-IP directly to a OpenRelayDatabase? ex. ordb.org?
>
> In almost every MTA, you can set it to test the senders IP in such a
> database directly.
> This way the message will get rejected at MTA-stage.
>
> I know SA is looking up in such databases too, but IMHO I think it's less
> consuming testing the relay at MTA-stage :)
>
> Any comments?

It takes time for an IP to be accepted by an external RBL, it also takes time
for it be removed; so you lose the immediacy of being able to do it on your
own server because of a local problem, in order to ease the load.

External RBLs also won't accept an IP just because of one report (to prevent
DoS attacks on the RBL), so you have to rely on other people reporting the
same IP before it gets registered.

Antony.

--

The only problem with the Universe as a platform, though, is that it is
currently running someone else's program.

 - Ken Karakotsios, author of SimLife