ugob at CAMO-ROUTE.COM
Fri Jan 30 21:13:56 GMT 2004
> -----Message d'origine-----
> De : Eric J Merkel [mailto:merkel at METALINK.NET]
> Envoyé : Friday, January 30, 2004 4:11 PM
> À : MAILSCANNER at JISCMAIL.AC.UK
> Objet : Re: Performance problems...
> See comments in-line...
> ----- Original Message -----
> From: "Kevin Spicer" <kevins at BMRB.CO.UK>
> To: <MAILSCANNER at JISCMAIL.AC.UK>
> Sent: Friday, January 30, 2004 3:31 PM
> Subject: Re: Performance problems...
> > On Fri, 2004-01-30 at 19:49, Eric J Merkel wrote:
> > > I've tried turning off all virus notifications and tweaked the
> > > mailscanner.conf to process messages both in batch and in
> queue. While
> > > batch mode, I also tried changing the number of messages
> in the batch to
> > > process at any one time but it doesn't seem like
> mailscanner can keep up
> > > with the number of incoming messages passing thru the
> system. I've also
> > > lowered sendmail's logging level to 0, turned off fsync on
> > > I tried splitting the mqueue.in directory into multiple
> directories but
> > > couldn't get sendmail to drop the files into directories under
> > > Yes I did change the sendmail startup command to change
> the incoming
> > > directory to mqueue.in/* and also in mailscanner.conf. So
> at last, I am
> > > wondering what else I can try to improve the throughput
> of the system?
> > >
> > If you have not done so already try putting the MailScanner work
> > directory (/var/spool/mailscanner/incoming) in tmpfs
> (assuming memory
> > isn't the issue of course). I presume you are not using
> No we are not using SA. I will look into mounting the MS
> incoming directory
> on a tempfs. Do you have any recommendation on how much RAM I
> should set
> aside for the tmpfs?
Redhat? It will allocate it dynamically
> > I'd guess you are getting a lot of MyDoom related emails?
> One problem
> > this causes is messages to accounts that don't exist. If you have
> > MailScanner set to still deliver disinfected / cleaned
> messages then the
> > bounces from these may cause extra load on your server.
> I do not have it set to deliver cleaned/disinfected messages.
> I do have a
> fair number of bounced spam messages from unknown user accounts on our
> system. Right now I have a script clean out the mqueue every
> 10 minutes of
> all invalid bounce messages.
> > There were some useful sendmail rules (both subject and recipient)
> > posted to the list which can help to block MyDoom.
> I just joined the list today so I didn't get a chance to see
> those filters.
> Do you have the subject of those messages so I can look them up in the
> Thanks in advance,
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