nanog mailing list archives
Re: verizon.net and other email grief
From: Simon Waters <simonw () zynet net>
Date: Mon, 13 Dec 2004 08:50:20 +0000
On Friday 10 Dec 2004 5:26 pm, Rich Kulawiec wrote:
When an incoming SMTP connection is made to one of Verizon's MX's, they allow it to proceed until the putative sender is specified, i.e. they wait for this part of the SMTP transaction:
I don't think this is the issue, as we aren't getting that far in the transaction. Inspection suggests that the anycast announcements in the UK were pointing to a server that wasn't accepting email. I believe here the problem is using anycast, and not providing a backup system not using anycast. The previous case I'm aware of was when bits of the NE USA lost ".org" because they only had anycast DNS servers (and still do AFAIK), and the announcement messed up. Whilst I plead ignorant of the technical details of anycast, strikes me that it is clearly more complex, and thus more prone to failure, and these failures are potentially less obvious.
Current thread:
- Re: verizon.net and other email grief, (continued)
- Re: verizon.net and other email grief Paul G (Dec 10)
- Re: verizon.net and other email grief Peter Corlett (Dec 10)
- Re: verizon.net and other email grief william(at)elan.net (Dec 10)
- Re: verizon.net and other email grief Steven Champeon (Dec 10)
- Re: verizon.net and other email grief Valdis . Kletnieks (Dec 10)
- Re: verizon.net and other email grief Jeffrey I. Schiller (Dec 10)
- Re: verizon.net and other email grief Krzysztof Adamski (Dec 10)
- Re: verizon.net and other email grief Crist Clark (Dec 10)
- Re: verizon.net and other email grief Jeffrey I. Schiller (Dec 10)
- Re: verizon.net and other email grief Rich Kulawiec (Dec 12)
- Re: verizon.net and other email grief Simon Waters (Dec 13)
- Re: verizon.net and other email grief Suresh Ramasubramanian (Dec 13)
- Anycast reliability (was: Re: verizon.net and other email grief) Steve Gibbard (Dec 13)
- Re: Anycast reliability (was: Re: verizon.net and other email grief) Joe Abley (Dec 13)
- Re: verizon.net and other email grief Todd Vierling (Dec 14)
- Re: verizon.net and other email grief Daniel Karrenberg (Dec 16)
- Re: verizon.net and other email grief Iljitsch van Beijnum (Dec 16)
- Re: verizon.net and other email grief just me (Dec 16)
- Re: verizon.net and other email grief Iljitsch van Beijnum (Dec 16)
- Re: verizon.net and other email grief Steve Gibbard (Dec 16)
- Re: verizon.net and other email grief Joe Maimon (Dec 16)