nanog mailing list archives
Re: Barracuda Networks Spam Firewall
From: "Eric A. Hall" <ehall () ehsco com>
Date: Tue, 18 May 2004 19:03:01 -0500
On 5/18/2004 6:44 PM, Per Gregers Bilse wrote:
For a long time since then, backup MXs have been seen as a kind of value-added courtesy service; they serve no really useful purpose
well, they're handy for centralizing filters against multiple domains, if you're willing to put your various primaries at the mercy of the filter service, and if the filter knows your valid recipients. what with ldap-smart servers and fancy routing, this isn't even hard anymore. but general "backup" MX is long-time dead. first the spammers killed our outbound flexibility by forcing everybody to close their relays, and then they killed our inbound flexibility by forcing everybody to close their generic backup MX paths. that cracking sound is stress fractures as the network gets more rigid. -- Eric A. Hall http://www.ehsco.com/ Internet Core Protocols http://www.oreilly.com/catalog/coreprot/
Current thread:
- Re: Barracuda Networks Spam Firewall, (continued)
- Re: Barracuda Networks Spam Firewall Valdis . Kletnieks (May 18)
- Re: Barracuda Networks Spam Firewall Christopher X. Candreva (May 18)
- Re: Barracuda Networks Spam Firewall Valdis . Kletnieks (May 18)
- Re: Barracuda Networks Spam Firewall Todd Vierling (May 18)
- Re: Barracuda Networks Spam Firewall Valdis . Kletnieks (May 18)
- Re: Barracuda Networks Spam Firewall Christopher X. Candreva (May 18)
- Re: Barracuda Networks Spam Firewall Valdis . Kletnieks (May 18)
- Re: Barracuda Networks Spam Firewall Todd Vierling (May 18)
- Re: Barracuda Networks Spam Firewall Eric A. Hall (May 18)
- Re: Barracuda Networks Spam Firewall Per Gregers Bilse (May 18)
- Re: Barracuda Networks Spam Firewall Eric A. Hall (May 18)
- Re: Barracuda Networks Spam Firewall Per Gregers Bilse (May 18)
- Re: Barracuda Networks Spam Firewall Christopher X. Candreva (May 18)
- Re: Barracuda Networks Spam Firewall Valdis . Kletnieks (May 18)
- Re: Barracuda Networks Spam Firewall Todd Vierling (May 18)
- backscatter hosts Chris Edwards (May 18)
- Re: backscatter hosts Steven Champeon (May 18)
- Re: backscatter hosts Christopher X. Candreva (May 18)
- Re: backscatter hosts Steven Champeon (May 18)
- Re: backscatter hosts John Capo (May 19)
- Re: Barracuda Networks Spam Firewall Christopher X. Candreva (May 18)
- Re: Barracuda Networks Spam Firewall Christopher X. Candreva (May 18)
- Re: Barracuda Networks Spam Firewall Valdis . Kletnieks (May 18)