Beta release 4.61.1

Julian Field MailScanner at
Mon Jun 4 13:11:23 IST 2007

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Anthony Peacock wrote:
> Rick Cooper wrote:
>>> -----Original Message-----
>>> From: mailscanner-bounces at 
>>> [mailto:mailscanner-bounces at] On Behalf Of 
>>> Anthony Peacock
>>> Sent: Monday, June 04, 2007 5:59 AM
>>> To: MailScanner discussion
>>> Subject: Re: Beta release 4.61.1
>>> Julian Field wrote:
>>>> This beta includes direct communication with clamd, and no 
>>> longer uses
>>>> clamd-wrapper or clamdscan. This should be faster than the 
>>> clamd support
>>>> in the previous version.
>> [...]
>>> I have just installed this version and fired up clamd.  What a 
>>> difference it makes.  Working like a dream and has changed a server 
>>> that was starting to get sluggish into one that flies through the 
>>> incoming emails now.
>> Thanks, I think you will really like the latest code that calls clamd 
>> once
>> per batch, especially if you are normally processing a good number of
>> messages per batch. I would be very interested in any performance
>> information regarding large volume servers as I would have to 
>> manufacture
>> tests for large volume batches as our servers only handle a couple 
>> thousand
>> incoming mails a day per server (at most). I know I was pleased with the
>> reduction of memory and resources that we have experienced. Just make 
>> sure
>> your clamd.conf is setup to match your old clamavmodule settings from
>> mailscanner.
> I can't help with large volumes, as I only process 5-6k messages a day.
I use a milter (a clone of milter-bcc) to multiply up the traffic and 
have it delivered to a 'speed-testing' server using mailertable and a 
fictitious domain name. The speed-testing server processes the mail 
through MailScanner and then uses a very dumb sendmail setup to deliver 
all mail to another host, whose sendmail setup bins all incoming mail. 
That way I can load up the speed-testing server and keep the incoming 
and outgoing SMTP traffic as real as possible. With an out-of-the-box 
MailScanner setup (including SpamAssassin and a couple of virus 
scanners) it can handle well over 2 million messages per day.

If I get a chance I will try to do some timings for you, but no promises.


- -- 
Julian Field MEng CITP
Buy the MailScanner book at

MailScanner customisation, or any advanced system administration help?
Contact me at Jules at Jules.FM

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