Re: [Asrg] [ASRG] SMTP pull anyone?
Graeme Fowler <graeme@graemef.net> Wed, 26 August 2009 22:17 UTC
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Date: Wed, 26 Aug 2009 23:17:19 +0100
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Subject: Re: [Asrg] [ASRG] SMTP pull anyone?
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Apologies if this comes over in an inflammatory or tediously weak way, but... On Wed, 2009-08-26 at 17:22 -0400, Daniel Feenberg wrote: > I understand that many IPv6 capable MTAs exist, but I expect they do all > or nearly all of their external traffic via IPv4. I don't mean a general > condemdantion of IPv6, I am only saying that SMTP traffic from strangers > on IPv6 is not likely to be worthwhile. This is different from IPv4 SMTP traffic from strangers how, exactly? The vast majority of previously unseen connections handled by MTAs under my direct control right now using v4 only are "not likely to be worthwhile". The fact that there are several powers of 2 (well, many) more hosts in the v6 world makes no difference apart from a scaling factor. Imagine if I ran a hypothetical organisation which used network intelligence gathered from previous SMTP sessions to determine how to handle a connection from a previously unseen host - it wouldn't matter a jot if those connections came from a v4 or a v6 host. The only common factor is that they were previously unseen (ie a "stranger"). Well run organisations will fix the address (as they do now) of their outbound MTAs, and therefore allow intelligence to build up over time about their usage and "goodness quotient". If anyone's crazy enough to float the outbound IP around, even inside a v4 /24, then they should expect their reputation to stay on the side of "low". If they do it inside a v6 /64, they're really crazy. Graeme
- Re: [Asrg] SMTP pull anyone? John Levine
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- Re: [Asrg] SMTP pull anyone? Dave CROCKER
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- Re: [Asrg] [ASRG] SMTP pull anyone? Chris Lewis
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- Re: [Asrg] [ASRG] SMTP pull anyone? Douglas Otis
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- Re: [Asrg] [ASRG] SMTP pull anyone? Jeff Macdonald
- Re: [Asrg] [ASRG] SMTP pull anyone? John Levine
- Re: [Asrg] [ASRG] SMTP pull anyone? Douglas Otis
- Re: [Asrg] [ASRG] SMTP pull anyone? Daniel Feenberg
- Re: [Asrg] [ASRG] SMTP pull anyone? Graeme Fowler
- Re: [Asrg] [ASRG] SMTP pull anyone? Rich Kulawiec
- Re: [Asrg] [ASRG] SMTP pull anyone? Jeff Macdonald
- Re: [Asrg] [ASRG] SMTP pull anyone? Steve Atkins
- Re: [Asrg] [ASRG] SMTP pull anyone? Chris Lewis
- Re: [Asrg] [ASRG] SMTP pull anyone? Alessandro Vesely
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- Re: [Asrg] [ASRG] SMTP pull anyone? Rich Kulawiec
- Re: [Asrg] [ASRG] SMTP pull anyone? Douglas Otis
- Re: [Asrg] [ASRG] SMTP pull anyone? Daniel Feenberg
- Re: [Asrg] [ASRG] SMTP pull anyone? Douglas Otis