Author: John Robinson Date: To: exim users Subject: Re: [exim] how to drop failed DSN?
On 23/12/2006 17:05, Chad Leigh -- Shire.Net LLC wrote: > I believe they are ones for which I am a backup MX host so I accept
> them and try to relay them on.
You probably ought to look into recipient verification callouts then;
most of the time the primary MX will be up and it's a spammer
desperately trying to get the mail accepted by using a lower-priority MX
instead of the primary MX.