nanog mailing list archives
Re: Blocking mail from bad places
From: Thomas Leavitt <thomas () thomasleavitt org>
Date: Sat, 07 Apr 2007 11:40:50 -0700
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Here's what one of the messages my system produces: Apr 7 12:02:26 tongs postfix/smtpd[15229]: NOQUEUE: reject: RCPT from mail.middreut.com[208.61.243.195]: 454 Service unavailable; Client host [208.61.243.195] blocked using dnsbl.cagreens.org; Whoops! Please see http://greens.org/delist and note your sending address is --> 208.61.243.195 <--. Sorry.; from=<> to=<agates () godmoma com> proto=ESMTP helo=<exchange.middreut.local> This provides a reasonable explanation... as long as you can read English. If you want to talk about hard to understand: every time I post to nanog, I get a bounce message from someone in Germany, in German. About as much use as my bounce message is to someone who doesn't read English. ... and why aren't bounce messages standardized in content and formatting?!? Thomas James R. Cutler wrote:
At 4/5/2007 08:38 AM -0700, Thomas Leavitt wrote: One problem with the "bounce" solution is that <snip/> ========================== So, I (Cutler) add: And, even the best-intentioned bounce messages often give lots of data, but no information, thus increasing the noise to signal ratio. For example, Paul most likely knows what the following means to him. To me it just means I can't send mail to Paul.This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: paul () vix com SMTP error from remote mailer after RCPT TO:<paul () vix com>: host sa.vix.com [204.152.187.1]: 553 5.7.1 Service unavailable; Client host [209.86.89.61] blocked using reject-all.vix.com; created / reason ------ This is a copy of the message, including all the headers. ------- James R. Cutler james.cutler () consultant com
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Current thread:
- Re: Blocking mail from bad places, (continued)
- Re: Blocking mail from bad places Peter Dambier (Apr 04)
- Re: Blocking mail from bad places John Levine (Apr 04)
- Re: Blocking mail from bad places Ken Simpson (Apr 04)
- Re: Blocking mail from bad places John L (Apr 04)
- Re: Blocking mail from bad places Steven Champeon (Apr 04)
- Re: Blocking mail from bad places Thomas Leavitt (Apr 05)
- Re: Blocking mail from bad places James R. Cutler (Apr 05)
- Message not available
- Re: Blocking mail from bad places James R. Cutler (Apr 05)
- Re: Blocking mail from bad places Ken Simpson (Apr 05)
- Re: Blocking mail from bad places Matthew Black (Apr 05)
- Re: Blocking mail from bad places Thomas Leavitt (Apr 07)
- Re: Blocking mail from bad places Valdis . Kletnieks (Apr 07)
- Re: Blocking mail from bad places Paul Vixie (Apr 08)
- Re: Blocking mail from bad places Steve Sobol (Apr 05)
- Re: Blocking mail from bad places Matthew Sullivan (Apr 05)
- Re: Blocking mail from bad places joej (Apr 04)
- Re: Blocking mail from bad places Thomas Leavitt (Apr 04)
- Re: Blocking mail from bad places Matthew Black (Apr 04)
- Re: Blocking mail from bad places Matthew Black (Apr 04)