[Greylist-users] Bagley: version 0.01 available

[Steven Ericsson Zenith]

If the ACL implementation fixes the cases like certain Exchange servers
and YahooGroups that do not retry (can someone confirm this please) then
this is worth taking a look at.

Where can I get the source?

Wih respect,
Steven


William Blunn wrote:

>OK, I have now packaged up the initial version of my
>standalone binary greylister for Exim 4.
>
>It can be downloaded from here:
>
>http://workingcomputers.eris17.co.uk/bagley/bagley-0.01.tar.gz
>
>Bill
>
>
>Original message follows:
>---------------------------------------------------------------------------
>Message-ID: <005801c3ffc9$f0725540$2504a8c0 at bh.blunn.org>
>From: "William Blunn" <bill--greylist at tao-group.com>
>To: <greylist-users at lists.puremagic.com>
>Date: Mon, 1 Mar 2004 20:15:27 -0000
>Subject: [Greylist-users] Bagley: A standalone binary greylister for Exim 4
>
>I've just finished the first cut of a standalone binary program (written
>in C++) which implements greylisting for Exim 4.
>
>It is a standalone program so no recompilation of Exim is required.
>
>I am calling it Bagley - Bill's GreyLister for Exim.
>
>I started with Martin Dempsey's code but it didn't work in quite the way
>I wanted it.  So I hacked on it, eventually completely re-writing it
>until I had a local_scan system that worked the way I wanted.
>Investigating some more I found out about Exim 4's ACL hook mechanism
>used by Roman Festchook's perl implementation, and realised that this
>would give me a better solution.
>
>Using an ACL hook means that I can (temporarily) reject messages before
>receiving the message DATA, whereas local_scan only works after the
>message DATA has already been received.
>
>Also it is much more convenient to use a binary packaged Exim 4 than
>having to build your own.
>
>So I re-factored my implementation to separate out the greylisting core,
>then made a shim to make it work out of an ACL hook.  (In fact I
>started by making a shim for local_scan operation, so now it will work
>either way.)
>
>The backend database is MySQL.  I have optimised it to work just
>fine on MySQL 3.23.49 (Debian Woody version).
>
>Through the Exim 4 ACLs, it can signal Accept, Reject, or
>Temporary-reject.
>
>I have a config file mechanism so that the greylisting time, database
>connect parameters, and logging parameters can be adjusted easily.
>
>On a Pentium III 1GHz, the elapsed time in the program seems to be
>running at about 40 milliseconds per message.
>
>Extract from log file:
>
>2004-03-01T19:40:56Z res=tempreject elap=0.036927 h=68.203.136.168 s=maigarza_ml at mdnet.com.br r={koan3 at sseyo.com}
>2004-03-01T19:41:07Z res=tempreject elap=0.035108 h=66.63.163.168 s=j994156f at yihmarketers.com r={mcl at sseyo.com}
>2004-03-01T19:41:09Z res=tempreject elap=0.044619 h=68.249.239.227 s=karla_hendrix_iw at skinup.co.uk r={anlink at sseyo.com}
>
>"elap" shows the processing time in seconds.
>
>I haven't packaged it up yet or put it up on a web site.
>
>I was just wondering if anyone would be interested.
>
>Bill
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