MailScanner load testing advice

[Pete]

Ugo Bellavance wrote:

>>-----Message d'origine-----
>>De : Pete [mailto:pete at eatathome.com.au]
>>Envoyé : 31 mars, 2004 20:43
>>À : MAILSCANNER at JISCMAIL.AC.UK
>>Objet : MailScanner load testing advice
>>
>>
>>My colleague has written a small PHP script that will send a bunch of
>>messages to my mailscanner machine. I was going to try and see how many
>>i can send it before it starts complaining (eg 1000s, 10000s 1000000s
>>etc) since my mailscanner machine and other test machine are 
>>both on the
>>same lan.
>>
>>I have used the details from this test - but i wonder how stressful it
>>is on MailScanner recieving the same email over and over ? as 
>>long as it
>>triggers spam ruiles then its providing some stress?
>>http://hyvatti.iki.fi/~jaakko/spam/unkillable.txt
>>
>>BUT i need to set up the output to go nowhere - how do i send a legit
>>email/spam, let it get scanned and placed back in the postfix incoming
>>queue, but not delivered, just deleted? I am using the single postfix
>>and freebsd. If there a way, if i specificied an alias pointed at
>>dev/null in the aliases file and emailed alias at localhost ? What is the
>>best way to do this?
>>    
>>
>
>I think this is the best way.  Or if it is a test server, you can put both spam actions and high scoring spam actions to delete or store, but no deliver.
>  
>
>>
>>Thanks
>>Pete
>>
>>    
>>
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Thank you, this worked perfectly - good idea :) I put Non Spam and High 
Spam to Delete and Spam to store and pumped in 1000s of emails, with a 
spammy body from the link above.

We have modded the script to send attachments now, pics and zips - now 
we will start nesting the zip files and varying the attachments in a 
batch. I was sending them in batches of 500 tried turning off MS and 
letting postfix recieve them all, turnning MS on and them pummping 
another 500 in while MS is dealing with the last 500 - with every check 
on i can think of (no dcc, razor etc), file, spam, clamav etc our new 
machine doesnt even raise a sweat i couldnt get it above 20% CPU usage, 
.3 Load average and 800MB RAM free - I may  have slight over specced the 
RAM for this machine :)

I am going to spend tomorrow morning with my developer colleague tyin to 
bombard server with nested zip files and the deep nested zip scanning 
all turned on, see if we can find a way to jam this server right up - we 
only have 3 small machines set up for pumping in the mail though.....

My colleague says he will write a form for his script, maybe this can be 
useful to others? Lemme know and i will post it somewhere