On Fri, 30 Aug 2002, Newsmirror wrote:

>
> > >
> > > With this info, over time one would be able to finetune and optimize the
> > > number of lists used and lookup order, dropping lists rarely scoring/used etc.
> >
> > once you know the IP and you know that it has been rejected, getting the
> > list is trivial.
> >
>
> Well, me from an adminstrators view that logic isn't very efficient. I monitor logs
> concistiently to adapt applications for best performance or adjust malconfigurations.
>
> In the XMail case I have some 50% of all connections rejected by maps, and knowing 
>that
> XMail for each connection does a DNS query for each map until a match says me that
> this will come down on performance more or less. Especially if the the map 
>responsible for
> most blocks is put last in a line of five, and maybe the three first ones don't 
>catch anything.
> Besides that grepping and looking up all rejected IPs from the smtp-log in these 
>five map-databases
> manually (or even automated) and from the result build some sort of statistics is 
>something
> I wouldn't even assign to my worst enemy.
>
> My suggestion adding the actual map responsible for a block, would easen up a 
>decision
> of what maps to use and in what order to break optimum simple by quickly browsing 
>thru
> 1-2 days of logs. If I find map E (the 5th and last map) was responsible for 99% of 
>the blocks
> and the three first ones (A, B, C) does 0%, the I know my CustMapsList is very 
>poorly setup. Now I
> simply had to drop maps A,B and C and set the 99% scorer, E frontmost to gain an 
>optimized
> CustMapsList directive for the time being.
>
> Of course, I could have come to this decision by following your suggestion aswell, 
>but it would require
> X hours of extra work, those extra hours which one rarely have lying around. From my 
>point
> of view, I figure this would add up some 1 line additional code on your behalf, 
>while it would save us
> XMail users (atleast me ;) ) a bundle + slightly better map-based performance 
>eventually.

are you telling me that you're spending your time looking logs and
adjusting maps order ? come on, this is a process that a picky admin would
do once a week at most.



- Davide


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