nanog mailing list archives
Re: fingerprinting and spam ID (was: Re: ISP wants to stop outgoing web based spam)
From: Ken Simpson <ksimpson () mailchannels com>
Date: Fri, 11 Aug 2006 09:19:17 -0700
The problem is that I already see enough legit mail hit the quarantine due to being HTML/multipart, suspected of being sent "direct-to-MX" due to Exchange's bizarre habit of not providing an audit trail via Received headers, etc.
Of course by the time you can inspect the body of a message, it's already sucked down a large chunk of your resources. Host type is useful in pre-filtering even before you go so far as to send the banner -- to get rid of or at least slow down the crap that you almost certainly know is on its way.
The biggest problem with email isn't that it doesn't work; the biggest problem with email is that there are so many vendors who simply refuse to implement SMTP properly.
I heartily agree! We have seen some laughable renditions of SMTP over the years. Regards, Ken -- MailChannels: Reliable Email Delivery (TM) | http://mailchannels.com -- Suite 203, 910 Richards St. Vancouver, BC, V6B 3C1, Canada Direct: +1-604-729-1741
Current thread:
- Re: ISP wants to stop outgoing web based spam, (continued)
- Re: ISP wants to stop outgoing web based spam Suresh Ramasubramanian (Aug 09)
- Re: ISP wants to stop outgoing web based spam Sean Donelan (Aug 09)
- Re: ISP wants to stop outgoing web based spam Suresh Ramasubramanian (Aug 09)
- Re: ISP wants to stop outgoing web based spam Sean Donelan (Aug 09)
- Re: ISP wants to stop outgoing web based spam Suresh Ramasubramanian (Aug 09)
- Re: ISP wants to stop outgoing web based spam Sean Donelan (Aug 10)
- Re: ISP wants to stop outgoing web based spam Barry Shein (Aug 10)
- Re: ISP wants to stop outgoing web based spam Peter Corlett (Aug 11)
- Re: ISP wants to stop outgoing web based spam Valdis . Kletnieks (Aug 11)
- fingerprinting and spam ID (was: Re: ISP wants to stop outgoing web based spam) Steven Champeon (Aug 11)
- Re: fingerprinting and spam ID (was: Re: ISP wants to stop outgoing web based spam) Ken Simpson (Aug 11)
- Re: fingerprinting and spam ID Petri Helenius (Aug 12)
- Re: ISP wants to stop outgoing web based spam Ken Simpson (Aug 11)
- Message not available
- Re: ISP wants to stop outgoing web based spam Ken Simpson (Aug 11)
- Re: ISP wants to stop outgoing web based spam Florian Weimer (Aug 10)
- Re: ISP wants to stop outgoing web based spam Suresh Ramasubramanian (Aug 10)
- Re: ISP wants to stop outgoing web based spam Hank Nussbacher (Aug 10)
- Re: ISP wants to stop outgoing web based spam Simon Waters (Aug 11)
- Re: ISP wants to stop outgoing web based spam Peter Corlett (Aug 11)