nanog mailing list archives
Re: Anti-spam System Idea
From: jlewis () lewis org
Date: Sun, 15 Feb 2004 17:37:32 -0500 (EST)
On Sun, 15 Feb 2004 Valdis.Kletnieks () vt edu wrote:
If we advertise the DHCP pools for AS1312 in a DUL, we solve the problem for those sites that use the DUL we list them in. If we block outbound port 25 SYN packets from origin addresses in the DHCP address blocks, we solve the problem for everybody.
No...you just speed up the migration (which has already begun) to spam proxies that use the local ISP's mail servers as smart hosts. Then you have to come up with a way to rate-limit customer outbound SMTP traffic. BTW...who brought SARS (or more likely just flu) to nanog30? I drove (so I didn't catch it on the plane) and symptoms (sore throat, congestion, very high fever) started thursday. I've spent most of the weekend in bed waiting to die. ---------------------------------------------------------------------- Jon Lewis *jlewis () lewis org*| I route Senior Network Engineer | therefore you are Atlantic Net | _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________
Current thread:
- RE: Anti-spam System Idea, (continued)
- RE: Anti-spam System Idea Tim Thorpe (Feb 14)
- Re: Anti-spam System Idea Andy Dills (Feb 14)
- Re: Anti-spam System Idea jlewis (Feb 14)
- RE: Anti-spam System Idea Tim Thorpe (Feb 14)
- Re: Anti-spam System Idea Steven Champeon (Feb 14)
- RE: Anti-spam System Idea jlewis (Feb 14)
- RE: Anti-spam System Idea william(at)elan.net (Feb 14)
- Re: Anti-spam System Idea Jon R. Kibler (Feb 15)
- Re: Anti-spam System Idea Sean Donelan (Feb 15)
- Re: Anti-spam System Idea Valdis . Kletnieks (Feb 15)
- Re: Anti-spam System Idea jlewis (Feb 15)
- Re: Anti-spam System Idea Jon R. Kibler (Feb 15)
- Re: Anti-spam System Idea Daniel Reed (Feb 16)
- RE: Anti-spam System Idea Tim Thorpe (Feb 14)
- Re: Anti-spam System Idea Sean Donelan (Feb 15)
- Re: Anti-spam System Idea Valdis . Kletnieks (Feb 15)
- Identifying IP address types Sean Donelan (Feb 15)
- Re: Anti-spam System Idea Jon R. Kibler (Feb 15)
- Re: Anti-spam System Idea Sean Donelan (Feb 15)
- Re: Anti-spam System Idea Jon R. Kibler (Feb 15)
- Re: Anti-spam System Idea Christopher L. Morrow (Feb 15)
- Re: Anti-spam System Idea Jon R. Kibler (Feb 16)