On Aug 24, 2009, at 7:57 PM, /dev/rob0 wrote:

On Monday 24 August 2009 12:43:16 Martijn de Munnik wrote:
How can I write a message to syslog when a check_client_access
rule matches?

See the WARN result. If you mean that you want to log and to trigger
some other action, do note that REJECT and DEFER results are logged
anyway. If you're wanting to log an accept action, you could make a
multiple result using a restriction class:
   http://www.postfix.org/RESTRICTION_CLASS_README.html
   http://www.postfix.org/postconf.5.html#smtpd_restriction_classes

Could someone please provide an example, this is a little bit too technical for me ;)

smtpd_recipient_restrictions =
   permit_mynetworks,
   permit_sasl_authenticated,
   reject_non_fqdn_recipient,
   reject_non_fqdn_sender,
   reject_unknown_sender_domain,
   reject_unverified_recipient,
   reject_unauth_destination,
   reject_invalid_helo_hostname,
   reject_non_fqdn_helo_hostname,
   reject_rbl_client virbl.dnsbl.bit.nl,
   check_policy_service inet:127.0.0.1:12525,
   check_client_access cidr:/opt/csw/etc/postfix/postfix-dnswl-permit,
   check_policy_service inet:127.0.0.1:10023



(Technically I think restriction classes are not necessary for this;
similar results could be had from simply defining a restriction as a
variable in main.cf.)
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