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Cannot believe how effective greylisting has been in reducing volume of
email.
Matt
On Tue, May 12, 2009 at 3:33 PM, W B Hacker <wbh@???> wrote:
> Matt wrote:
> > I have this entry in exim.conf:
> >
> > defer log_message = greylisted
> > !hosts = net-lsearch;/etc/virtual/trusted_ips
> > Basically I do not want to greylist any of the IP's in
> > /etc/virtual/trusted_ips. Is there a limit on the number of IP's I can
> have
> > in this file? I have about 5k IP's in it right now.
> >
> > Matt
>
> Other than time-to-traverse, I'm not aware that Exim itself has a limit.
>
> Your file-system DOES have limits, but you are probsbly not even close to
> it by
> two or more orders of magnitude.
>
> EX: Just did an 'ANALYZE VERBOSE brownlist;' and find 954,773 IP-based
> records
> here, though those are in a PostgreSQL DB, not raw fs.
>
> At 5k IP's, not sure a Database Engine would meet 'payback' criteria.
>
> If this is a fairly static list, OTOH, a CDB or such might be a better move
> than
> *either* flat-file or SQL RDBMS.
>
> HTH,
>
> Bill
>
>
>
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