Autor: Jeremy Harris Datum: To: exim-users Betreff: Re: [exim] Telling a secondary MX about valid addresses on the
primary
On 2011-02-26 09:57, Roger Burton West wrote: > I have two MX machines, call them mx0 and mx1; mx0 is the lower-priority
> and does deliveries to users. As is the way of the world, mx1 gets hit
> by a lot of spammers with scraped addresses which will be undeliverable
> (e.g. message-IDs). At the moment, mx1 accepts the message (assuming it
> passes the spam filter), and forwards it to mx0, which rejects it; then
> mx1 tries to send a bounce message to the (faked) originator.
Option 1) have both systems lookup the same database (or copies thereof)
in deciding whether an address is valid
Option 2) have the slave system do a recipient-verify callout to the master
system
