Hi,

Just before upgrading to the new 2.60 Release, I read through
to documentation to see what has changed. But some things are
not clear to me. Maybe someone's able to bring some light to me?

http://eu.spamassassin.org/doc/Mail_SpamAssassin_Conf.html#network%20test%20opti
ons

| trusted_networks ip.add.re.ss[/mask] ... (default: none)
|
| [...]

Ok, I think I've understood what trusted_networks basically does:
DNSBL checks are never done for IPs listed in trusted_networks.

| If you're running with DNS checks enabled, SpamAssassin includes code to
| infer your trusted networks on the fly, so this may not be necessary.
| (Thanks to Scott Banister and Andrew Flury for the inspiration for this
| algorithm.) This inference works as follows:
|
|  * if the 'from' IP address is on the same /16 network as the top
|    Received line's 'by' host, it's trusted

Does this mean that if my MX has address 217.160.190.191 the
whole 217.160.0.0/16 network is automatically "trusted" and
therefor no DNSBL checks will be run for it?
This is really not what I want: This network contains other
dedicated servers operated by other customers of my ISP and
even if they've an working abuse-department there will be
open proxies/relays in it from time to time.
Is it possible to turn this "feature" of auto-inference of
the trusted_networks off? And if so, how could it be done?
Would the clear_trusted_networks option work to get rid of it?

|  * if the address of the 'from' host is in a reserved network
|    range, then it's trusted
|  * if any addresses of the 'by' host is in a reserved network
|    range, then it's trusted

How's "reserved" defined in this context? The reserved
netblocks from RFC 1918? Or anything else?

Thanks for any answers.

Dominik


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