I’ve managed to reduce the load (fingers crossed), I cant
get smf-sav to compile on my box yet, but still looking into it.
I firewalled some brazil IP Ranges which took a good load off
too.
Seen some bogus recipient addresses that are really targeted to
and rejected them in my access database.
I’m going to try my utmost to get smf-sav working -
would love a sample of someones conf file where they have multiple domains
multiple exchange servers for recipient verification
From:
mailscanner-bounces <at> lists.mailscanner.info
[mailto:mailscanner-bounces <at> lists.mailscanner.info] On Behalf Of G.
Armour Van Horn
Sent: 30 April 2009 22:00
To: MailScanner discussion
Subject: Re: MailScanner slowwing down
I was looking at those yesterday because I was running the
load average up to 10 or 12 in spurts. My box has a Sempron 2200 and a gig of
RAM, so it does swap when it gets busy. I can upgrade to a machine that's half
again faster with twice the memory for the same monthly fee, but I'd have to
run both during the transition and it would take a ton of time to move
everything over. (It's a webserver for a couple of dozen domains and my
secondary name server.)
I told Sendmail to stop accepting connections at load average of 6, which kept
the load average from trying to get to 50. (Yes, I have seen the la go that
high, although not on this system. It ain't pretty!)
I dropped the child count from five to three, which seemed to help - each child
just took bigger bites and the throughput didn't seem to be affected.
One thing that looked appealing was setting up a caching nameserver, but all
the docs I ran into assumed that you weren't already running BIND on the box
and that you wanted to cache your local network, so I was too confused to get
that running. (I do have everything installed, just need to figure out the
config.)
I did add pause-greet to the Sendmail config, it blocked at least a hundred
messages overnight. Not a big change, but the price is right.
I'm thinking about setting up greylisting, it will cut down on the MS load and
should spread out the surges a little.
I guess I should have expected things to slow down when I leapfrogged so many
versions on Tuesday. Now I've got to figure out how to get it back in control
or bite the bullet and get some more horsepower.
Van
Martin Hepworth wrote:
See
Dropping unknown recipients and having a local caching
nameserver are generally the first things to sort, then look at the number of
children and batch size...
--
Martin Hepworth
Oxford, UK
2009/4/30 Mail Admin <mailadmin <at> midland-ics.ie>
Hi All,
Recently I am finding that the amount of incoming mail
through my MailScanner Server is really slowing down things. There
is a heavy load now since I took on a domain that seems to me well spammed.
Yesterdays processing processed 22,000 emails <at> 88% Spam approx.
Server Spec POWEREDGE 1850 XEON 2.8GHZ/2MB 800FSB – WITH 2 GIG RAM and
RAID 1 Configuration on two Disks RPM 10K… Its Running Fedora Core
5, Send Mail 8.13.8-1.fc5 with MailScanner 4.69.7-1 with SA, Razor, DCC.,
MailWatch V1
Its working very well blocking spam, but only in the last couple of days its
got really slow.
Any ideas on how to reduce the load on this server>? By blocking mail at
the MTA before it hits MS? OR Tweaking my processes?
What do the Experts think on the Server Spec, for the amount of traffic?
I’d appreciate any help
Regards
Kevin
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