On Mon, Jun 16, 2003 at 11:37:00AM +0200, Jesus Climent wrote: > The bandwidth reduction will only happen if you decide to discard the > mail, since the mail will always be accepted, scanned to find the IP > which originated the message, the IP will be checked agains the > database and then the mail will be tagged.
The IP that's checked in the DSBL is the one of the machine opening the connection to the MTA running at murphy/master. You don't actually scan the email headers. You are right that the bandwidth is decreased only if the mail is rejected instead of being just tagged, of course. > The reduction happens in the output, but the load might increase in > the server. Bandwidth is much more expensive than CPU time. The bandwidth required by the DNS lookups can also be reduced by maintaining a local cache. Marcelo