What would ppl suggest it the most efficient way to block such addresses?
I cannot simply block entire class B's and blocking individual IPs will probably get out of date...
I do not really want to process the email, I want to decrease the load on spam assassin by stopping the initial connect.
By analysin the mails I am finding they are all spam.... so I want to block say strings like dsl.xxxx.swbell.com....
access list?
IPtables rule?
What would be most efficient?
The goal here is to minimise disk i/o as that is the item being stretched, iostat -x 5 shows over 450% utilisation.....delays are geting to 4+ hours...and they bitch if its over 5 minutes....
I have 4 cpu's and spare capacity on these and I am only using 2.5 gig out of 4gig of ram so have spare here....the box only processes incoming smtp only, outgoing takes another route.....
At present I am running ext3 on the logging and spool directories but considering reiserFS, a good idea?
Also I am aiming to get more disks as I ahve only 2, so I can either raid 0 over the 3 new disks or split the queues....to 3 disks, which might be better?
Would a scsi hwraid based cache controller be worth it?
If I raid 0 what stripe size would be a good starting point with ReiserFS?
advice appreciated...
regards
Thing
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