Todd,
>We've got qmail up and running quite well.
>
>The rbl patch has been applied and we are using control/badmailfrom to
>control the spam but quite a bit still slips through.
>
>How do I stop the spam mail where the domain don't resolve??
If you're using TCP wrappers (built into BSD inetd's; bolt-on-able to other inetd's),
you can block unresolvable IP addresses, I think with the keyword PARANOID
If you're running Qmail through tcpserver, I presume this has a similar functionality.
Summary: Block unresolvable addresses before Qmail gets hold of the message.
cheers,
Andrew.
