I'm currently using a qmail/spamassin configuration on a linux debian server.
From time to time (twice a week); the load average gets very high (> 100) and the server stops responding.
Email is involved here : I've got few domains on my server that get spammed with dictionnary attacks and as you may know, qmail accepts every email by default even if the mail box doen't exist...
I should build some kind of a "before delivery mail validity check" like the ones described below to avoid qmailscanner & spamassassin to do scan time for nothing...
But this is for the near future, from now on I ve got to find a quick & dirty solution to simply avoid Spamassassin to scan non existant mail boxes.
The only solution I've found so far is to use the option "all_spam_to" in the
, like :
But it happens that Spamassassin is still making scan time here (why ?) :
Sat Apr 7 10:46:12 2007  info: spamd: clean message (-90.8/3.0) for non_existant_user@spammed_
:98 in 7.2 seconds, 21202 bytes.
So THE QUESTION IS :
What would be a QUICK&EASY solution to make qmailscanner/spamassassin not doing any scan on a full domain (But still doing scan on others selected domains) ?
For the information, my qmail system was build using the excellent Sylvestre Ledru documentation :
But as says the author in a reply for the same problem :
"Install the patch : http://www.interazioni.it/opensource/chkuser/
because each email is processed even if the user account doesn't exist (be carreful with this patch, I haven't really been able to install it with my documentation)."
(this answer was posted here : http://sylvestre.ledru.info/howto/howto_qmail_vpopmail_help.php
, search for "Author : Jean (j.respen_at_wrackweb.net)
poste le 25/07/2006 10:14")
... not very engaging...
Thanks for your help