nanog mailing list archives
Re: verizon.net and other email grief
From: Crist Clark <crist.clark () globalstar com>
Date: Fri, 10 Dec 2004 15:16:34 -0800
Krzysztof Adamski wrote:
On Fri, 10 Dec 2004, Jeffrey I. Schiller wrote:On Fri, Dec 10, 2004 at 12:26:59PM -0500, Rich Kulawiec wrote:One thing that's not clear is whether or not Verizon caches any of this information.It appears that they do some amount of caching. -JeffIt does not appear that they are caching it, here is a sample from my log file: Dec 6 19:18:15 white sm-mta[25976]: iB70IF6n025976: <lopqp () abc net>... User unknown Dec 6 19:18:15 white sm-mta[25977]: iB70IF6n025977: <lopqp () abc net>... User unknown Dec 6 19:18:16 white sm-mta[25976]: iB70IF6n025976: from=<>, size=0, class=0, nrcpts=0, proto=SMTP, daemon=MTA, relay=sc006pub.verizon.net [206.46.170.182] Dec 6 19:18:16 white sm-mta[25977]: iB70IF6n025977: from=<>, size=0, class=0, nrcpts=0, proto=SMTP, daemon=MTA, relay=sc019pub.verizon.net [206.46.170.68] Dec 6 19:18:16 white sm-mta[25976]: iB70IF6o025976: <lopqp () abc net>... User unknown Dec 6 19:18:16 white sm-mta[25977]: iB70IF6o025977: <lopqp () abc net>... User unknown Dec 6 19:18:16 white sm-mta[25976]: iB70IF6o025976: lost input channel from sc006pub.verizon.net [206.46.170.182] to MTA after rcpt Dec 6 19:18:16 white sm-mta[25976]: iB70IF6o025976: from=<antispam245967 () west verizon net>, size=0, class=0, nrcpts=0, proto=SMTP, daemon=MTA, relay=sc006pub.verizon.net [206.46.170.182] Dec 6 19:18:16 white sm-mta[25977]: iB70IF6o025977: lost input channel from sc019pub.verizon.net [206.46.170.68] to MTA after rcpt Dec 6 19:18:16 white sm-mta[25977]: iB70IF6o025977: from=<antispam830748 () west verizon net>, size=0, class=0, nrcpts=0, proto=SMTP, daemon=MTA, relay=sc019pub.verizon.net [206.46.170.68] What happens when verizon tries to send email to somebody who does the same type of check, does this not create an infinite loop?
Not if Verizon treats the antispam[0-9]+ mailboxes in a special manner and answers without a check. And they have to answer that the box exists or things are gonna _really_ break. Doing a quick test using the last antispam[0-9]+ address in my SMTP logs, I got all 250 responses without a more recent call back. -- Crist J. Clark crist.clark () globalstar com Globalstar Communications (408) 933-4387
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 Michael Loftis (Dec 10)
- RE: verizon.net and other email grief william(at)elan.net (Dec 10)
- 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 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)