From: Michael Orlitzky (michaelorlitzky.com)
Date: Tue Jun 09 2009 - 14:09:19 CDT

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EASY steve.hilldigitalcertainty.co.uk wrote:
> Not sure regarding the Ironport, but I imagine it is just the same as
> the Barracuda. The 'Reputation' is just an in-house rbl list and Yes,
> Postfix does these very well indeed. Here I am making use of a few;
>
> smtpd_recipient_restrictions =
> ...
> reject_rbl_client zen.spamhaus.org
> reject_rbl_client pbl.spamhaus.org
> reject_rbl_client dnsbl.sorbs.net
> reject_rbl_client b.barracudacentral.org

The PBL is contained within Zen [1]. There's no need to query it twice.

[1] http://www.spamhaus.org/zen/index.lasso

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