From owner-freebsd-stable@FreeBSD.ORG  Sun Jun 14 16:55:14 2015
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: freebsd-stable@hub.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 5CE9BB4E
 for <freebsd-stable@hub.freebsd.org>; Sun, 14 Jun 2015 16:55:14 +0000 (UTC)
 (envelope-from gshapiro@gshapiro.net)
Received: from zim.gshapiro.net (zim.gshapiro.net [IPv6:2001:4f8:3:36::224])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client CN "smtp.gshapiro.net", Issuer "Certificate Authority" (not verified))
 by mx1.freebsd.org (Postfix) with ESMTPS id 3E421B98
 for <freebsd-stable@freebsd.org>; Sun, 14 Jun 2015 16:55:14 +0000 (UTC)
 (envelope-from gshapiro@gshapiro.net)
Received: from minime.local (c-98-207-41-174.hsd1.ca.comcast.net
 [98.207.41.174]) (authenticated bits=0)
 by zim.gshapiro.net (8.15.1.30/8.15.1.30) with ESMTPSA id t5EGt8EB051487
 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO);
 Sun, 14 Jun 2015 09:55:11 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=gshapiro.net;
 s=gatsby.dkim; t=1434300912;
 bh=JUI40ZblrAxRxO4rFFZ0Awfq+5wxtx3jYI21ISrhcfo=;
 h=Date:From:To:Cc:Subject:References:In-Reply-To;
 b=chd3kY84jPxBpZXqAUM0qAdFqBz8CiOFA6eEszBwTHYDXiyd69gcPPLlHRNuzCM3U
 o8Ql0ecssS7TchPYS8yFzVv+/yO3wrjzVFfpwBxJduT0eD8rGdSbwI1aSKTw8TRJb/
 ZI045/nkQlYgrz4cTrtyWdXzOD7Xl+/1nqrJEbtw=
Date: Sun, 14 Jun 2015 09:55:07 -0700
From: Gregory Shapiro <gshapiro@gshapiro.net>
To: Frank Seltzer <frank_s@bellsouth.net>
Cc: freebsd-stable@freebsd.org
Subject: Re: Sendmail problem after upgrade to r284296
Message-ID: <20150614165507.GD95564@minime.local>
References: <alpine.BSF.2.20.1506141014130.852@Ace.nina.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <alpine.BSF.2.20.1506141014130.852@Ace.nina.org>
User-Agent: Mutt/1.5.23 (2014-03-12)
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-stable>,
 <mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable/>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
 <mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 14 Jun 2015 16:55:14 -0000

> Jun 14 00:50:04 Ace sm-msp-queue[79406]: STARTTLS=client, error: connect failed=-1, reason=dh key too small, SSL_error=1, errno=0, retry=-1
> Jun 14 00:50:04 Ace sm-msp-queue[79406]: ruleset=tls_server, arg1=SOFTWARE, relay=[127.0.0.1], reject=403 4.7.0 TLS handshake.

The new OpenSSL eliminated small DHParam support.  That leaves two possibilities:

1. The remote side you are talking to is using a small value.  The best thing to do would be to eliminate the DH ciphers from your settings.  See the docs for the CipherList setting.

2. Your side is using a small value.  Double check your setting:

> grep DHParam /etc/mail/sendmail.cf
# DHParameters (only required if DSA/DH is used)
#O DHParameters

If that is set to '5' (or a string beginning with 5) or a filename which was created with a 512 bit DHParam, change it to '2' (2048) or a newly created file using 'openssl dhparam -out /path/to/file 2048'.  In your /etc/mail/`hostname`.mc file, this setting will show as confDH_PARAMETERS.

Also note that the first version of the openssl fix including an ABI issue and a new version was released.  Make sure you are using the latest version.