From: "Rolf Kutz" <kutz at netcologne dot de>
>* Quoting Alex Neuman van der Hans (alex at nkpanama dot com):

>> I've set up a few. Definitely your best shot would be to use m0n0 for
>> your firewall/routing needs, along with a bit of traffic shaping. I'd
>> block outgoing port 25 to prevent abuse (and let your clients know that

> This helps preventing abuse like castration
> prevents rape. How shall people contact their
> providers smtpd if 25 is blocked?

A good provider has an authenticated back door.  Mine, for example, allows 
connection on a 4 digit port that ends in 25, with a username and password. 
It just keeps out the main spam engines.  Worst case, I can PPtP into one of 
my firewalls (like at home) and have full access from there.  Now for the 
sites that block GRE, and so on...  I am SO with you!

                            Lee