nanog mailing list archives
Re: How do you stop outgoing spam?
From: Scott Francis <darkuncle () darkuncle net>
Date: Wed, 18 Sep 2002 12:31:35 -0700
On Tue, Sep 17, 2002 at 08:35:03PM +0200, brad.knowles () skynet be said: [snip]
Much more complex to implement and manage; doesn't scale well. The fewer decisions the anti-spam system has to make, the better it will work. If it only has to decide whether or not a specific IP/port combination has exceeded a certain threshold, it will run much more smoothly than if it's examining the contents of each packet.Indeed, that will be a lot more scalable. But if you still have to look into each packet to see which ones are link encrypted (and therefore should be left alone) and which ones aren't (and therefore should be transparent proxied and/or traffic-shaped), that is quite a bit more work. The question is how much abuse is too much? Is it okay to allow all open port 25 connections (traffic-shaped to low average bit-rates), or is any abuse too much?
Even the best solution will only approach 100% effectiveness as a limit. As in many things, it's a tradeoff - how much hassle are you willing to undergo for a steadily-diminishing return, 80/20 rule, etc. Personally, I'd be happy for 80% of the operators out there to implement the easiest 80% of things required to stop spam. If people would just take even the most basic of steps required to block spam, the picture would improve drastically for all of us. -- -= Scott Francis || darkuncle (at) darkuncle (dot) net =- GPG key CB33CCA7 has been revoked; I am now 5537F527 illum oportet crescere me autem minui
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Current thread:
- Re: How do you stop outgoing spam?, (continued)
- Re: How do you stop outgoing spam? Scott Francis (Sep 17)
- RE: How do you stop outgoing spam? Al Rowland (Sep 10)
- RE: How do you stop outgoing spam? Christopher L. Morrow (Sep 10)
- RE: How do you stop outgoing spam? Dan Hollis (Sep 10)
- Re: How do you stop outgoing spam? Rafi Sadowsky (Sep 09)
- Re: How do you stop outgoing spam? Brad Knowles (Sep 09)
- Re: How do you stop outgoing spam? John M. Brown (Sep 09)
- Re: How do you stop outgoing spam? Brad Knowles (Sep 09)
- Re: How do you stop outgoing spam? Scott Francis (Sep 17)
- Re: How do you stop outgoing spam? Brad Knowles (Sep 17)
- Re: How do you stop outgoing spam? Scott Francis (Sep 18)
- Re: How do you stop outgoing spam? Brad Knowles (Sep 09)
- Re: How do you stop outgoing spam? Eliot Lear (Sep 09)
- Re: How do you stop outgoing spam? Rafi Sadowsky (Sep 09)
- Re: How do you stop outgoing spam? Eliot Lear (Sep 09)
- Re: How do you stop outgoing spam? Scott Francis (Sep 17)
- Re: How do you stop outgoing spam? John M. Brown (Sep 09)
- Re: How do you stop outgoing spam? alex (Sep 10)
- Re: How do you stop outgoing spam? Valdis . Kletnieks (Sep 10)
- Re: How do you stop outgoing spam? Iljitsch van Beijnum (Sep 10)
- Re: How do you stop outgoing spam? Valdis . Kletnieks (Sep 10)