nanog mailing list archives
Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism]
From: "Matthew Black" <black () csulb edu>
Date: Wed, 12 Apr 2006 13:35:33 -0700
On Wed, 12 Apr 2006 14:18:24 -0400 Valdis.Kletnieks () vt edu wrote:
On Wed, 12 Apr 2006 10:16:53 PDT, Steve Thomas said:> I haven't seen any succinct justification for providing a > 550 message rejection for positively-identified spam versus > silently dropping the message. Lots of how-to instructions > but no whys. RFC 2821? ...the protocol requires that a server accept responsibility for either delivering a message or properly reporting the failure to do so.
Your statement is open to multiple interpretations. I argue that anytime our system identifies a message as spam that it gets delivered to the system bit bucket. RFC-821 and netiquette also "mandate" e-mail be properly addressed. System manufacturers and administrators make compromises because strict adherence to the rules is not always possible from an operational perspective.
Elsewhere in 2821 (6.1, to be specific): When the receiver-SMTP accepts a piece of mail (by sending a "250 OK" message in response to DATA), it is accepting responsibility for delivering or relaying the message. It must take this responsibility seriously. It MUST NOT lose the message for frivolous reasons, such as because the host later crashes or because of a predictable resource shortage.
Lost me on that part about crashes being frivolous reasons. This is a political statement not an indisputable matter of fact.
OK? Got that? You '250 OK' it, you got a *serious* responsibility. Losing the message because the whole damned machine crashes is considered a frivolous reason.And throwing it away because you don't like the way it looks is OK? Man,
...............................***
you're in for some severe karmic protocol payback down the road... ;)
I'm not the one throwing them away and never look at them; watch the finger wagging. And thanks for the karma heads up, Bhudda. matthew black california state university, long beach
Current thread:
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism], (continued)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Matthew Black (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Suresh Ramasubramanian (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Matthew Black (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Suresh Ramasubramanian (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Matthew Black (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Joe Maimon (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Henry Yen (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Tony Finch (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Steve Thomas (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Valdis . Kletnieks (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Matthew Black (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Steve Thomas (Apr 12)
- Re: Spam filtering bcps Bryan Bradsby (Apr 12)
- Re: Spam filtering bcps Valdis . Kletnieks (Apr 12)
- Re: Spam filtering bcps Andy Smith (Apr 13)
- Re: Spam filtering bcps Matthew Black (Apr 12)
- Re: Spam filtering bcps Matthew Sullivan (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Matthew Sullivan (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Edward B. DREGER (Apr 12)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Steve Thomas (Apr 12)
- SMTP: run-to-completion, backscatter, et cetera (Re: Spam filtering bcps ...) Edward B. DREGER (Apr 12)