bgware: greylisting & mailfront-based systems?


Previous by date: 23 Oct 2007 11:55:52 -0000 Re: greylisting & mailfront-based systems?, Olivier Mueller
Next by date: 23 Oct 2007 11:55:52 -0000 Re: greylisting & mailfront-based systems?, Thomas Mangin
Previous in thread: 23 Oct 2007 11:55:52 -0000 Re: greylisting & mailfront-based systems?, Olivier Mueller
Next in thread: 23 Oct 2007 11:55:52 -0000 Re: greylisting & mailfront-based systems?, Thomas Mangin

Subject: Re: [bgware] greylisting & mailfront-based systems?
From: Olivier Mueller ####@####.####
Date: 23 Oct 2007 11:55:52 -0000
Message-Id: <1193140523.21896.28.camel@olipc.insign.ch>

Hi again,

On Fri, 2007-10-19 at 17:16 +0200, Tomasz Baranowski wrote:
> > Is there anyone around using greylisting on their mailfront (and maybe
> > vmailmgrd-based) systems?  If yes, what system are you using?
> 
> I use Thomas Mangin's qmail-greyd for about a year with no problems
> (http://thomas.mangin.com/).

Are you using the "original" version from the homepage ?

After a few days of testing, I think there is something a little bit
buggy:  the first time an IP gets greylisted, a file is created, that is
fine.  But if it gets another mail during the graylisting period (1
minute normally), the file will be "touched" again:

first try:

[root@ibox /var/qmail/grey/129/132]# stat 3-11 
79 2828643 -rw-r--r-- 1 qmaild qmail 0 0 "Oct 23 13:48:12 2007" "Oct 23
13:48:12 2007" "Oct 23 13:48:12 2007" "Oct 23 13:48:12 2007" 4096 0 0
3-11

next try 16 seconds after:

[root@ibox /var/qmail/grey/129/132]# stat 3-11 
79 2828589 -rw-r--r-- 1 qmaild qmail 0 0 "Oct 23 13:48:28 2007" "Oct 23
13:48:28 2007" "Oct 23 13:48:28 2007" "Oct 23 13:48:28 2007" 4096 0 0
3-11

So it "resets" the timer. So if the mail servers keeps trying sending
the mail every 30 seconds, the ip will stay greylisted "forever"? 

regards,
Olivier



Previous by date: 23 Oct 2007 11:55:52 -0000 Re: greylisting & mailfront-based systems?, Olivier Mueller
Next by date: 23 Oct 2007 11:55:52 -0000 Re: greylisting & mailfront-based systems?, Thomas Mangin
Previous in thread: 23 Oct 2007 11:55:52 -0000 Re: greylisting & mailfront-based systems?, Olivier Mueller
Next in thread: 23 Oct 2007 11:55:52 -0000 Re: greylisting & mailfront-based systems?, Thomas Mangin


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