Matt Kettler wrote:
> Bowie Bailey wrote:
> > I was just looking through the default scores and I noticed that
> > ALL_TRUSTED is only scored at -1.8.  I thought it had a much lower
> > score than that.  Am I completely off track, or did something
> > change in one of the recent versions?
> 
> It got hacked back because trust-path misconfiguration is VERY
> common.

So we reduce the effectiveness of a properly configured system in
order to prevent problems on a misconfigured system?  Sounds a bit
backwards to me.

Also, since the trust path issues that cause ALL_TRUSTED to FP also
cause other problems for various network tests, does it really make
sense to hide the main symptom of the problem?

> ie: SA will by default FP ALL_TRUSTED on all direct-delivered spam
> with no extra received: headers if your MX server is NATed or
> otherwise has a reserved IP address..
> 
> This is because by default SA will trust the first public IP,
> assuming that to be your MX, and all the privates to be internal
> relays.
> 
> Unfortunately, as the world of IT goes now, static-mapped NAT for
> mailservers is just as common as direct-public IPed mailservers. The
> static-mapping allows you to conserve IP space when making multiple
> DMZs.. You only loose 3 public IPs total for
> network/broadcast/gateway, instead of 3 per DMZ (network, broadcast,
> gateway). Everything is mapped to useable IPs in the private nets,
> so the IPs lost in each DMZ for net/bcast/gate are all private IPs
> with no public mappings. 

Right, I understand all of that.  I'm usually one of the first people
on the list to point this out to those who complain about ALL_TRUSTED
false positives.

I guess I need to go fix the score on all my servers now.  I should
have noticed this a while back, but I don't usually pay too much
attention to the scoring unless something goes wrong.

-- 
Bowie

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