Hello,

Michael Scheidell wrote:
> amavisd can be configured to only bounce back if spf/dkim signed.


How can be this done? I'm also getting a lot of spam from forged 
addresses in my domain, most of it being stopped by DNSBL checks at 
postfix, but some high percentage of those spam messages still pass 
those checks. I use $final_spam_destiny = D_REJECT, which is supposed to 
send a 500 message back to the server, not to bounce the spam message, 
except in the case stated here: 
http://www.mail-archive.com/amavis-user@lists.sourceforge.net/msg14060.html 
(multiple recipients), right? My problem is whitelisting (I had to use 
it since users sent html messages and so on). So, I'd like to have 
something like:

1) If the message from my domain is dkim signed and optionally from a 
SPF allowed host, then it is passed.
2) If it's not dkim signed or SPF allowed then it gets bad points and it 
is checked for additional spam characteristics and finally rejected.

How could be this achieved? Any hint is appreciated.

Thanks,
Rodolfo.


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