On 23-Jun-2009, at 06:31, Jan P. Kessler wrote:
Another option is to use selective greylisting on "unknown" clients:

MAIN.CF
smtpd_recipient:_restrictions =
 permit_mynetworks,
 <...others...>,
 check_client_access = pcre:/etc/postfix/client_check


/etc/postfix/client_check:
/^unknown$/   check_policy_service inet:127.0.0.1:10031

Oh yes, that works. In fact, I thought I already had that in my check_client_fqdn.pcre file, I guess I overlooked it.


--
BILL: I can't get behind the Gods, who are more vengeful, angry, an
        dangerous if you don't believe in them!
HENRY: Why can't all these God just get along? I mean, they're omni-
        potent and omnipresent, what's the problem?

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