nanog mailing list archives
Re: Spam filtering bcps
From: Matthew Sullivan <matthew () sorbs net>
Date: Thu, 13 Apr 2006 09:56:12 +1000
Bryan Bradsby wrote:
Why? - You can scan for viruses inline using a variety of products (eg: I have patched Postfix to use clamav inline on modest hardware (single CPU AMD64 will do it, so will a Dual PIII 866) and it will accept messages at 50 messages per second (sustained load) and scan for viruses before responding to the end-of-data command, rejecting if a virus is detected.).Silently deleting other people's e-mail should never even be considered.Unless that email is a virus, or a spam with a forged envelope sender.
Spam is a different subject altogether - are you that sure you can detect spam without a false positive? If so then why aren't you doing it inline? If you can't why are you blindly deleting the messages? - My BCP comment is if you can't detect inline (eg for performance reasons) tag it and deliver it (if you have the capabilities, deliver it to a junk folder) - that way you are following the RFC's and no non spam mail is deleted by the system.
Regards, Mat
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] 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)
- Re: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] Matthew Black (Apr 13)
- RE: Spam filtering bcps [was Re: Open Letter to D-Link about their NTP vandalism] David Schwartz (Apr 13)