Email causing MailScanner to go defunct.

Kai Schaetzl maillists at
Fri Jan 23 18:31:23 GMT 2009

Steve Campbell wrote on Fri, 23 Jan 2009 11:42:41 -0500:

> Max Spam Check Size = 4000k
> Max SpamAssassin Size = 2500000

Ah, ok, I confused these two settings, or, actually, I somehow wasn't aware 
that there were two. Maybe at the time I "learned" MailScanner.conf there was 
only one of them. Anyway, scanning such big messages in completeness is most 
certainly having a dramatic impact on performance and memory usage of SA/MS.

Set this back to:
Max SpamAssassin Size = 200k
and leave the other as is. That should help you a lot.

There's really no point in scanning the big messages completely. If the 
message is spam SA should almost certainly be able to know this from the 
first lines.

> High value, but like I said, there was a time when emails weren't 
> delivered if it were above.

you mean, if *they* were above? Unfortunately, you didn't debug this. Either 
there was a bug then or you misinterpreted something.

> I'm only using right now with my MTA. I've never 
> compared rejected versus accepted, but when I tail my maillog, it seems 
> as though most email is thrown away. If anyone has a safe suggestion for 
> more that I should add to the MTA, please suggest. A lot of my incoming 
> is from bursts from news agencies sending alerts to all reporters.

There's a lot of things one can do at the MTA level and using an RBL is just 
one of them. It depends on the software, clientele, needs etc. Each one is 

> There were a lot of failed modules during install. The two main ones 
> installed fine. MS says it installed fine. I'm just wondering if that 
> might have a bearing on this as I'm running Centos 3 here.

Oh. Yeah, this might have an impact as well. I remember someone else with 
RHEL 3 reported a lot of failed modules during installation recently. I 
replied with a recommendation to her. Apparently most modules could not be 
built. This can mean a lot or almsot nothing. It depends on the fact if you 
have these modules already installed or not.


Kai Schätzl, Berlin, Germany
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