Milter-greylist

Hi,

some of my users forward external mails to my host. In some cases those
forwarding hosts don't filter spam. How do I parse back through
forwarding headers to find the true source IP and run dnsrbl checks on
that IP. Possible with milter-greylist?

Ciao
Marcus

Marcus Schopen lists-yahoogroups@... [milter-greylist]
<milter-greylist@yahoogroups.com> wrote:

> some of my users forward external mails to my host. In some cases those
> forwarding hosts don't filter spam. How do I parse back through
> forwarding headers to find the true source IP and run dnsrbl checks on
> that IP. Possible with milter-greylist?

Possible if the forwarding host is ind enough to provide the
information.

Most of the time the information can be found in Received headers.

-- 
Emmanuel Dreyfus
http://hcpnet.free.fr/pubz
manu@...

On 2016-12-11 06:31, manu@... [milter-greylist] wrote:
> Marcus Schopen lists-yahoogroups@... [milter-greylist]
> <milter-greylist@yahoogroups.com> wrote:
> 
>> some of my users forward external mails to my host. In some cases 
>> those
>> forwarding hosts don't filter spam. How do I parse back through
>> forwarding headers to find the true source IP and run dnsrbl checks on
>> that IP. Possible with milter-greylist?
> 
> Possible if the forwarding host is ind enough to provide the
> information.
> 
> Most of the time the information can be found in Received headers.

How would I do that then? With SA I put the IPs of the forwarding ISP to
trusted_networks and/or internal_networks, so SA knows the last/first
connecting IP to run dnsrbl and dnswl checks on.

Ciao
Marcus