sobig virus

[Raymond Dijkxhoorn]

Hi!

> I've never quite understood why sending mail to a lower-MX-priority server
> achieves anything useful for the spammers or virus-senders.
>
> Surely if they send to a secondary MX machine, all that does is to queue it
> and relay on to the primary MX, which then does the normal scanning....?

Pretty simple, a 'normal' MX rejects mail directly, user unknown crap and
so on, most fallbacks accept mail without checking, if the domain is ok
it will accept. Then YOU have to deal with the bounces, they dont, they
just beam away.

Bye,
Raymond.