reject_rbl_client
in [Postfix]
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From: Vasya Pupkin on 13 Aug 2010 05:11 Hello. I wonder, how postfix handles multiple entries like this: reject_rbl_client hostkarma.junkemailfilter.com=127.0.0.2, reject_rbl_client hostkarma.junkemailfilter.com=127.0.0.4, Will it try to lookup address every time, or it is smart and will use previous lookup result to compare with next address?
From: Ralf Hildebrandt on 13 Aug 2010 05:17 * Vasya Pupkin <postfix-list(a)bsrealm.net>: > Hello. > > I wonder, how postfix handles multiple entries like this: > > reject_rbl_client hostkarma.junkemailfilter.com=127.0.0.2, > reject_rbl_client hostkarma.junkemailfilter.com=127.0.0.4, > > Will it try to lookup address every time, No > or it is smart and will use previous lookup result to compare with next > address? Indeed. And that's actually documented -- Ralf Hildebrandt Geschäftsbereich IT | Abteilung Netzwerk Charité - Universitätsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebrandt(a)charite.de | http://www.charite.de
From: Ralf Hildebrandt on 13 Aug 2010 05:21 * Ralf Hildebrandt <Ralf.Hildebrandt(a)charite.de>: > Indeed. And that's actually documented http://www.postfix.org/STRESS_README.html Although the above example shows three RBL lookups (lines 4-6), Postfix will only do a single DNS query, so it does not affect the performance. -- Ralf Hildebrandt Geschäftsbereich IT | Abteilung Netzwerk Charité - Universitätsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebrandt(a)charite.de | http://www.charite.de
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