Isolating MailScanner 'slowness'...

Ken Anderson ka at PACIFIC.NET
Wed Oct 8 16:03:51 IST 2003

Peter Bates wrote:

> Hello all...
> Apologies if this is a FAQ.

I think there is a faq entry on performance. Things like running the
incoming MS queue in tmpfs, optimizing some settings in
MailScanner.conf, gettting rid of dead/dying RBL lists can help speed
things up. Of course the hardware you are using, and how many
messages/day you are processing play into this as well. We've seen spam
double, then double again in the last year.

Definitely do the upgrade. SA 2.60 has some dead rbls removed, and is
better at identifying spam. The MS upgrade is mostly painless too, with
a few possible minor gotchas... (just watch the logs).

Ken A

> I guess I should upgrade my MailScanner (running 4.21), so it might
> just be a missing feature... I also need to switch to SA 2.60.
> At the moment the delivery  times for messages passing through our MS
> and Postfix combination are increasing, and I'm at a loss to guess where
> to look...
> In my bad old days of running Amavis(d), a certain 'verbosity' level in
> logging would produce stats in the log relating to the total time to
> process a message (Amavis of course doing everything on a per message
> basis), but also breaking this time down into '90% of the time spent on
> passing this message through SpamAssassin', etc. ...
> Are there any general tactics for isolating the problem here with
> MailScanner? I'm not seeing SA being 'killed off', but equally I'm
> assuming it might be the thing that is taking the longest to
> 'respond'...
> Thanks...
> Oh, this is MS 4.21, Postfix 2, on RedHat, with Sophos (and SAVI),
> Mcafee and F-Prot, and SA 2.55...
> --------------------------------------------------------------------------------------------------->
> Peter Bates, Systems Support Officer, Network Support Team.
> London School of Hygiene & Tropical Medicine.
> Telephone:0207-958 8353 / Fax: 0207- 636 9838

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