From owner-freebsd-questions Wed Feb 4 17:47:57 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id RAA02536 for questions-outgoing; Wed, 4 Feb 1998 17:47:57 -0800 (PST) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from fly.HiWAAY.net (root@fly.HiWAAY.net [208.147.154.56]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id RAA02524 for ; Wed, 4 Feb 1998 17:47:45 -0800 (PST) (envelope-from dkelly@nospam.hiwaay.net) Received: from nospam.hiwaay.net (max4-81.HiWAAY.net [208.147.145.81]) by fly.HiWAAY.net (8.8.8/8.8.6) with ESMTP id TAA00920 for ; Wed, 4 Feb 1998 19:47:39 -0600 (CST) Received: from localhost (localhost [127.0.0.1]) by nospam.hiwaay.net (8.8.8/8.8.4) with ESMTP id TAA06403 for ; Wed, 4 Feb 1998 19:08:16 -0600 (CST) Message-Id: <199802050108.TAA06403@nospam.hiwaay.net> X-Mailer: exmh version 2.0.1 12/23/97 To: questions@FreeBSD.ORG From: David Kelly Subject: Re: why must POP clients have a resolvable IP ? what about dynamic IPs ? In-reply-to: Message from chas of "Wed, 04 Feb 1998 14:18:33 +0800." <3.0.32.19980204144059.0093b100@peace.com.my> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Wed, 04 Feb 1998 19:08:16 -0600 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG X-To-Unsubscribe: mail to majordomo@FreeBSD.org "unsubscribe questions" > I'm sure we've all seen this error message before : > > >> popper[14612]: (v2.2) Unable to get canonical name of client, err = 0 > > And checking the archives again, the explanation is : > > [snip] > "This means it can't get the domain name of the IP that is using popper. > Try doing a nslookup on the IP, if it fails that is the reason." > "You need to put the IP address of your client in the named or hosts." > [/snip] My employer refuses to make entries in their DNS server for internal machines which are not visible to the outside world. So on my Irix systems the /var/adm/SYSLOG gets sprayed with those nasty messages. For some reason I haven't seen them on my FreeBSD system... but then it servers a different group, most have static entries in /etc/hosts. Was also thinking FreeBSD's /etc/syslogd.conf may be filtering these messages. I haven't changed it since 2.1.5 or 2.2.0 and have been upgrading via "make world". The solution for Irix was to find the offensive line in popper's source code and bracket it with an "#ifndef sgi .... #endif". The alternative was about 500 entries in /etc/hosts or running my own name server. -- David Kelly N4HHE, dkelly@nospam.hiwaay.net ===================================================================== The human mind ordinarily operates at only ten percent of its capacity -- the rest is overhead for the operating system.