MailScanner slowwing down

Thu Apr 30 22:26:58 IST 2009

> When you install smf-sav, there's a config file you'll need to edit
> slightly.  You specify your Exchange server, and it will query it.  The
> conf file is also where you can white/blacklist specific addresses,
> domains, etc.  It is fairly efficient, as it caches the results so that
> it's not asking the Exchange server about every message.  I think the TTL
> is 3 hours, but it can be changed as well.
>
> Another good milter to add is smf-spf.  Grey-listing and greet-pause are
> also very effective in reducing inbound noise.
>
> HTH...
>
> ...Kevin
> --
> Kevin Miller                Registered Linux User No: 307357
> CBJ MIS Dept.               Network Systems Admin., Mail Admin.
> 155 South Seward Street     ph: (907) 586-0242
> Juneau, Alaska 99801        fax: (907 586-4500
>
>
>
> ________________________________
> From: mailscanner-bounces at lists.mailscanner.info
> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Mail
> Admin
> Sent: Thursday, April 30, 2009 6:29 AM
> To: 'MailScanner discussion'
> Subject: RE: MailScanner slowwing down
>
> Martin, sorry for bothering you, but is there a description on how smf-sav
> actually works. How does it check the recipient of my domains? Does it
> know somehow  how to get to the exchange server for each domain>? I cant
> find any descriptions on the workings?
>
> Thanks a lot
>
> From: mailscanner-bounces at lists.mailscanner.info
> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Martin
> Hepworth
> Sent: 30 April 2009 12:27
> To: MailScanner discussion
> Subject: Re: MailScanner slowwing down
>
> Hi
>
> you need to do a lookup on each address rather than keeping it a file you
> have to maintain - smf-sav can do this quite easily although it's main
> purpose it to check senders it can also check recipients
>
> http://smfs.sourceforge.net/smf-sav.html
>
> --
> Martin Hepworth
> Oxford, UK
>
> 2009/4/30 Mail Admin
> <mailadmin at midland-ics.ie<mailto:mailadmin at midland-ics.ie>>
>
> The unknown recipients would solve a lot of the problems.
>
> I'm not sure if I can get my head around this though.
>
> The Server has some local domains with pop3 and the big domains I relay on
> to their Exchange Server.
>
> I'd love to put all the valid exchange users in a file and allow the
> system to only accept for thes valid addresses, but is there an easy way?
> So my exchange domains I lookup a file of addresses and other local I use
> the access file?
>
> Thanks
>
>
>
> From:
> mailscanner-bounces at lists.mailscanner.info<mailto:mailscanner-bounces at lists.mailscanner.info>
> [mailto:mailscanner-bounces at lists.mailscanner.info<mailto:mailscanner-bounces at lists.mailscanner.info>]
> On Behalf Of Martin Hepworth
> Sent: 30 April 2009 10:26
> To: MailScanner discussion
> Subject: Re: MailScanner slowwing down
>
>
>
> See
>
>
>
> http://wiki.mailscanner.info/doku.php?id=maq:index#optimization_tips
>
>
>
> and
>
>
>
> http://wiki.mailscanner.info/doku.php?id=maq:index#getting_the_best_out_of_spamassassin
>
>
>
> 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<mailto: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 @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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