Hi! This is the ezmlm program. I'm managing the
[email]email@example.com[/email] mailing list.
I'm working for my owner, who can be reached
Messages to you from the secureshell mailing list seem to
have been bouncing. I've attached a copy of the first bounce
message I received.
If this message bounces too, I will send you a probe. If the probe bounces,
I will remove your address from the secureshell mailing list,
without further notice.
I've kept a list of which messages from the secureshell mailing list have
bounced from your address.
Copies of these messages may be in the archive.
To retrieve a set of messages 123-145 (a maximum of 100 per request),
send an empty message to:
To receive a subject and author list for the last 100 or so messages,
send an empty message to:
Here are the message numbers:
--- Enclosed is a copy of the bounce message I received.
Received: (qmail 26165 invoked from network); 29 Jun 2008 00:28:29 -0000
Received: from mail.securityfocus.com (126.96.36.199)
by lists.securityfocus.com with SMTP; 29 Jun 2008 00:28:29 -0000
Received: (qmail 29312 invoked by alias); 28 Jun 2008 22:31:48 -0000
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id 0923C236FF3; Sat, 28 Jun 2008 16:10:25 -0600 (MDT)
Date: Sat, 28 Jun 2008 16:10:25 -0600 (MDT)
From: [email]MAILER-DAEMON@securityfocus.com[/email] (Mail Delivery System)
Subject: Undelivered Mail Returned to Sender
Content-Type: multipart/report; report-type=delivery-status;
This is a MIME-encapsulated message.
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The Postfix program
mx1.csie.nctu.edu.tw[184.108.40.206] refused to talk to me: 421 4.4.1
cacy-fpe-srv-2.symantec.com Unable to contact destination
Content-Description: Delivery report
Reporting-MTA: dns; outgoing3.securityfocus.com
X-Postfix-Sender: rfc822; [email]firstname.lastname@example.org[/email]
Arrival-Date: Thu, 26 Jun 2008 13:56:45 -0600 (MDT)
Final-Recipient: rfc822; [email]email@example.com[/email]
Diagnostic-Code: X-Postfix; host mx1.csie.nctu.edu.tw[220.127.116.11] refused
to talk to me: 421 4.4.1 cacy-fpe-srv-2.symantec.com Unable to contact
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Received: from lists.securityfocus.com (lists.securityfocus.com [18.104.22.168])
by outgoing3.securityfocus.com (Postfix) with QMQP
id 21BBC236FC5; Thu, 26 Jun 2008 13:56:45 -0600 (MDT)
Mailing-List: contact [email]firstname.lastname@example.org[/email]; run by ezmlm
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Date: Thu, 26 Jun 2008 07:38:26 -0700 (PDT)
From: wc wong <email@example.com>
Subject: sshd "none" method authentication
Content-Type: text/plain; charset=us-ascii
Resent-Date: Thu, 26 Jun 2008 13:56:45 -0600 (MDT)
I'm using OpenSSH version 4.6p1. I also use -lbsm flag when running configure to enable Solaris 10's BSM.
I notice that the none method failure is counted in /etc/shadow as a failed login, but the successful of the publickey method is not decrementing the failed login count in /etc/shadow. Hence resulting in the user account eventually being locked with a few ssh using publickey authentication as described below.
I configured a user in a server with Openssh publickey authentication.
I found that everytime when ssh to the user using publickey, there's at the beginning of the ssh session, the following log message:
sshd: Failed none for xxxx from a.b.c.d port xxxx ssh2
I understand that is required as the first step in SSHV2 authentication.
However, as I'm using Solaris 10 with LOCK_AFTER_RETRIES=yes. I found in the /etc/shadow file, the failed count for the user is incremented by one everytime when ssh with publickey. I suspect the failure of this first "none" authentication method is somehow returned and consider by Solaris as a login failure. This causes the user eventually being locked after a few ssh by publickey.
I wonder if there is any way to skip returning this "none" failure to the Solaris OS resulting in the fail login count being incremented.
Thanks in advance,