bugZoneCheck - Bugs: bug #9544, Zonecheck fails with greylisting...

 
 

bug #9544: Zonecheck fails with greylisting sites

Submitted by:  Stephane Bortzmeyer <bortzmeyer>
Submitted on:  Sun 04 Jul 2004 05:02:05 AM UTC  
Votes:  10  
 
Category:  tests Severity:  High
Priority:  5 - Normal Item Group:  Action request
Status:  None Privacy:  Public
Assigned to:  None Open/Closed:  Open

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Mon 18 Jun 2012 07:30:03 AM UTC, comment #4: 

Greylisting is now officially standard: RFC 6647

Stephane Bortzmeyer <bortzmeyer>
Project Administrator
Tue 17 Mar 2009 07:26:28 AM UTC, comment #3: 

Hello,

from what I understand, zonecheck should use the empty sender "<>" to verify addresses. Every greylisting implementation I know has a special rule to ignore these from greylisting.

Greetings

Stefan Pfetzing <dreamind>
Fri 19 Sep 2008 02:12:23 PM UTC, comment #2: 

At least Postfix (and may be other MTA) send a 5xx if the mailbox does not exist:

% telnet  192.134.4.10 smtp
Trying 192.134.4.10...
Connected to 192.134.4.10.
Escape character is '^]'.
220 mx1.nic.fr ESMTP Postfix
EHLO toto.example
250-mx1.nic.fr
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-STARTTLS
250-ENHANCEDSTATUSCODES
250-8BITMIME
250 DSN
MAIL FROM:<bortzmeyer@generic-nic.net>
250 2.1.0 Ok
RCPT TO:<ddfgjghvjghfgff@nic.fr>
554 5.7.1 <ddfgjghvjghfgff@nic.fr>: Recipient address rejected: Access denied
RCPT TO:<hostmaster@nic.fr>
450 4.7.1 <hostmaster@nic.fr>: Recipient address rejected: Greylisted by greyfix 0.3.9, try again in 365 seconds.  See http://www.kim-minh.com/pub/greyfix/ for more information.

So, may be only 5xx should be considered?

Stephane Bortzmeyer <bortzmeyer>
Project Administrator
Mon 05 Jul 2004 03:55:47 AM UTC, comment #1: 

Someone else apparently reported it because nic.fr is now in some whitelists. For instance in postgrey:

# 2004-07-01: nic.fr (address verification, reported by Arnaud Launay)
nic.fr

Stephane Bortzmeyer <bortzmeyer>
Project Administrator
Sun 04 Jul 2004 05:02:05 AM UTC, original submission:  

If a mail server uses greylisting (http://www.greylisting.org/), something which is more and more common, Zonecheck mail test fails:

       ___________
     ,-------------.|
~~~~ |    fatal    || ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     `-------------'
f> The hostmaster can't be contacted by email
 :   Unable to send email to the hostmaster address (hostmaster@nic.af.)
 : using relays: laghman.nic.af..
 `..... .. .. . .  .
=> generic

But the mail server sent back a 450 (a temporary error), as it should. Zonecheck should behave differently between a permanent error (5xx) and a temporary one (4xx). (And Zonecheck should display the error code and the message.)

Here is the log from the server, showing what was sent back:

Jul  4 09:20:43 laghman postfix/smtpd[7544]: connect from eve.generic-nic.net[192.134.7.250]
Jul  4 09:20:49 laghman postfix/smtpd[7544]: NOQUEUE: reject: RCPT from eve.generic-nic.net[192.134.7.250]: 450 <hostmaster@nic.af>: Recipient address rejected: Greylisted for 300 seconds...; from=<zonecheck@nic.fr> to=<hostmaster@nic.af> proto=SMTP helo=<relay2.nic.fr>

A workaround: try again 300 seconds later (the default greylisting time for most implementations, I use postgrey).

Stephane Bortzmeyer <bortzmeyer>
Project Administrator

 

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Carbon-Copy List
  • -email is unavailable- added by dreamind (Posted a comment)
  • -email is unavailable- added by bortzmeyer (Posted a comment)
  • -email is unavailable- added by mdavids (Voted in favor of this item)
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    Follow 2 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2008-04-16 mdavids Carbon-Copy- => Added mdavids
    2004-07-04 bortzmeyer Carbon-Copy- => Added hostmaster --AT-- nic --DOT-- af

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