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SubjectRe: [OFF-TOPIC] Re: Evil TCPD? (Was: Re: UseNet Gateway One Way ok?)
Date
> > > - Block the connection all together (silently drop the syn)
> > > (ICMP dest unreachable)
> >
> > Can't you do that with ipfwadm -I -a (deny|reject)?
>
> If you have any lower priority MXes run by your ISP, the mail will simply
> route around your firewall.

Even worse; in practice almost all UNIX machines will happily relay email.

Ralf

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