[svlug] May be DNS problem...
Siddharth Ray
sid_happenings at yahoo.com
Tue Feb 11 13:43:06 PST 2003
I have problem connecting to the internet. I have
redhat 7.3. any ideas. It may be a DNS problem. Can
anybody suggest the files to look into...
At the time of boot up, the following error message is
displayed:
GConf Error: Failed to contact configuration server (
a likely cause is
that you have an existing server configuration
server(gconfd) running,
but
it isn't reachable from here - if you have logged in
from two machines
at
once, you may need to enable TCP networking for ORBit.
Any ideas. I was going through the configuration files
and found some
wrong entries in /etc/sysconfig/static-routes which I
corrected but the
problem is still persisting.
-Siddharth
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> > Today's Topics:
>
> 1. Exim: pipes in /etc/aliases, and other stuff
> (William R Ward)
> 2. Re: Exim: pipes in /etc/aliases, and other
> stuff (J C Lawrence)
> 3. Re: Routers for small networks (William R
> Ward)
> 4. Re: None (William R Ward)
> 5. Re: Exim: pipes in /etc/aliases, and other
> stuff (William R Ward)
> 6. how do I timeout a 'ping" request? (Daevid
> Vincent)
> 7. Re: how do I timeout a 'ping" request? (Will
> Lowe)
> 8. Re: None (Tim)
> 9. Re: how do I timeout a 'ping" request? (Ron)
>
> ATTACHMENT part 3.1 message/rfc822
> Date: Fri, 7 Feb 2003 14:41:59 -0800
> From: bill at wards.net (William R Ward)
> To: svlug at lists.svlug.org
> Subject: [svlug] Exim: pipes in /etc/aliases, and
> other stuff
>
>
> OK, so I figured I'd see what all the fuss is about,
> and I went ahead
> and installed exim. I haven't had much in the way
> of problems, except
> for the fact that I have a few aliases that use
> pipes. I figured out
> that you need to indicate the username in the
> exim.conf file (I chose
> "nobody"), and that made it happy, and they are
> working fine.
>
> The only problem is whenever one of these pipe
> aliases gets a message,
> I get an email saying "Mail delivery failed" which
> is false because I
> got the message... See the attached message for an
> example of what
> I'm referring to.
>
> Since it's working correctly, I'd like to somehow
> convince exim that
> this is not in fact an error.
>
> A couple of other things as long as we're on the
> subject of exim
> configuration:
>
> * Someone said you can link the mailman system into
> exim in a
> seamless manner without having to add aliases to
> /etc/aliases.
> How?
>
> * I have my webhosting ISP's mail server set as my
> smart host. But
> when that server is down, sendmail used to look
> at the MX list and
> try using the secondary server as a smart host,
> which according to
> my ISP it isn't supposed to do. Does exim do
> that? If so, how can
> I make it NOT do that? The ISP's secondary mail
> server has
> relaying turned off, so any mail sent through it
> will bounce.
>
> --Bill.
>
> --
> William R Ward bill at wards.net
> http://www.wards.net/~bill/
>
-----------------------------------------------------------------------------
> "A foolish consistency is the hobgoblin of little
> minds, adored by
> little statesmen and philosophers and divines."
> - Emerson
>
> ATTACHMENT part 3.1.2 message/rfc822
> From: Mail Delivery System
> <Mailer-Daemon at wards.dyndns.org>
> To: bill at wards.dyndns.org
> Subject: Mail delivery failed: returning message to
> sender
> Date: Fri, 07 Feb 2003 08:00:28 -0800
>
> This message was created automatically by mail
> delivery software (Exim).
>
> 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:
>
> pipe to |/usr/local/bin/send_page -p
> 8314588862 at alphapage.myairmail.com -m
> wrw-work at home.wards.net
> generated by wrw-page at wards.dyndns.org
> (ultimately generated from
> wards-page at home.wards.net)
> pipe to |/usr/local/bin/send_page -p
> 8314278507 at alphapage.myairmail.com -m
> hlw-work at home.wards.net
> generated by hlw-page at wards.dyndns.org
> (ultimately generated from
> wards-page at home.wards.net)
>
> The following text was generated during the delivery
> attempts:
>
> ------ pipe to |/usr/local/bin/send_page -p
> 8314588862 at alphapage.myairmail.com -m
> wrw-work at home.wards.net
> generated by wrw-page at wards.dyndns.org
> (ultimately generated from
> wards-page at home.wards.net) ------
>
> Message sent.
>
> ------ pipe to |/usr/local/bin/send_page -p
> 8314278507 at alphapage.myairmail.com -m
> hlw-work at home.wards.net
> generated by hlw-page at wards.dyndns.org
> (ultimately generated from
> wards-page at home.wards.net) ------
>
> Message sent.
>
> ------ This is a copy of the message, including all
> the headers. ------
>
> Return-path: <bill at wards.dyndns.org>
> Received: from bill by komodo.home.wards.net with
> local (Exim 3.35 #1 (Debian))
> id 18hAvD-0000Z1-00
> for <wards-page at home.wards.net>; Fri, 07 Feb 2003
> 08:00:11 -0800
> To: wards-page at home.wards.net
> From: diary at wards.dyndns.org
> Subject: Next 1 hour
> Message-Id:
> <E18hAvD-0000Z1-00 at komodo.home.wards.net>
> Sender: Bill Ward <bill at wards.dyndns.org>
> Date: Fri, 07 Feb 2003 08:00:11 -0800
>
> As of 02/07 8am
> 9am-9:50am: Holly JAPN-005, Foothill College (Main
> Campus, 6502)
>
> ATTACHMENT part 3.2 message/rfc822
> Date: Fri, 07 Feb 2003 14:50:29 -0800
> From: J C Lawrence <claw at kanga.nu>
> To: bill at wards.net (William R Ward)
> CC: svlug at lists.svlug.org
> Subject: Re: [svlug] Exim: pipes in /etc/aliases,
> and other stuff
>
> On Fri, 7 Feb 2003 14:41:59 -0800
> William R Ward <bill at wards.net> wrote:
>
> > The only problem is whenever one of these pipe
> aliases gets a message,
> > I get an email saying "Mail delivery failed" which
> is false because I
> > got the message... See the attached message for
> an example of what
> > I'm referring to.
>
> Yup, your pipe is producing output on stdout and
> Exim is kind enough to
> tell you about that fact.
>
> > * Someone said you can link the mailman system
> into exim in a
> > seamless manner without having to add aliases to
> /etc/aliases. How?
>
> See Nigel's HOWTO on Exim.org or in the Mailman
> tarball.
>
> > * I have my webhosting ISP's mail server set as
> my smart host. But
> > when that server is down, sendmail used to look at
> the MX list and try
> > using the secondary server as a smart host, which
> according to my ISP
> > it isn't supposed to do. Does exim do that? If
> so, how can I make it
> > NOT do that? The ISP's secondary mail server has
> relaying turned off,
> > so any mail sent through it will bounce.
>
> Smarthost configs will not go to backup MX'es.
>
> --
> J C Lawrence
> ---------(*) Satan, oscillate my
> metallic sonatas.
> claw at kanga.nu He lived as a devil, eh?
> http://www.kanga.nu/~claw/ Evil is a name of a
> foeman, as I live.
>
>
> ATTACHMENT part 3.3 message/rfc822
> Date: Fri, 7 Feb 2003 14:51:56 -0800
> From: bill at wards.net (William R Ward)
> To: drew at drewb.com
> CC: svlug at lists.svlug.org
> Subject: Re: [svlug] Routers for small networks
>
> Andrew Bertola writes:
> >On Sun, 2003-02-02 at 10:58, Greg Herlein wrote:
> >> > hardware routers. I bought retail a D-Link 704
> router for my small
> >> > network because after rebate the little box was
> free!
> >>
> >> I use a linux box as a router, but another
> advantage of the
> >> little dedicated boxes are that they have no
> moving parts and
> >> take only about 150ma of current to run... quite
> miserly compared
> >> to my beast 486. Few folks talk about that
> aspect, it seems.
> >
> >But they don't do ssh!!!, mail, web, proxy, dns,
> anon-ftp, etc. Those
> >services can be thrown on a Linux box. You can
> forward ports to an
> >internal box, but then you might as well have that
> box be your router
> >and save the 150ma (much more actually as the
> transformer is heating the
> >house year round, no?).
>
> If you have a box that serves as your firewall *and*
> a server, you are
> just asking for trouble. You need an extra layer of
> hardware to be
> safe enough. Open up holes in your router for
> whatever services you
> want to point to internal boxes. Note: one
> advantage this gives is
> that *any* internal box can do any of these
> services; if you do them
> on the firewall/router box then they are all on the
> same box.
>
> >Furthermore, the Linksys product had an exploit
> that allowed intruders
> >to do bad things (I don't remember specifics, just
> google "Linksys
> >exploit" and you should find it). This points out
> the inherent weakness
> >in closed source router/firewall solutions. You
> can't be sure about the
> >product, and you can't easily fix it.
>
> That exploit was only available if you turned on
> remote
> administration, which is a foolish thing to do
> anyway.
>
> --Bill.
>
> --
> William R Ward bill at wards.net
> http://www.wards.net/~bill/
>
-----------------------------------------------------------------------------
> "A foolish consistency is the hobgoblin of little
> minds, adored by
> little statesmen and philosophers and divines."
> - Emerson
>
>
> ATTACHMENT part 3.4 message/rfc822
> Date: Fri, 7 Feb 2003 15:06:05 -0800
> From: bill at wards.net (William R Ward)
> To: Siddharth Ray <sid_happenings at yahoo.com>
> CC: svlug at lists.svlug.org
> Subject: Re: [svlug] None
>
>
> Siddharth Ray writes:
> >Hi,
> >By "system hangs" I mean the mouse pointer freezes
> +
> >the hard disk light keeps on glowing like it is
> >searching for somthing and the system doesn't
> respond.
> >So, to get it started again I have to push the
> reset
> >switch. The X-windows is not broken because
> everything
> >else is working fine.
> >-Siddharth
>
> Did you try killing X using Ctrl+Alt+Backspace? Or
> switch to a text
> screen with Ctrl+Alt+(F1..F6)?
>
> --
> William R Ward bill at wards.net
> http://www.wards.net/~bill/
>
-----------------------------------------------------------------------------
> "A foolish consistency is the hobgoblin of little
> minds, adored by
> little statesmen and philosophers and divines."
> - Emerson
>
>
> ATTACHMENT part 3.5 message/rfc822
> Date: Fri, 7 Feb 2003 15:10:22 -0800
> From: bill at wards.net (William R Ward)
> To: J C Lawrence <claw at kanga.nu>
> CC: svlug at lists.svlug.org
> Subject: Re: [svlug] Exim: pipes in /etc/aliases,
> and other stuff
>
> J C Lawrence writes:
> >On Fri, 7 Feb 2003 14:41:59 -0800
> >William R Ward <bill at wards.net> wrote:
> >
> >> The only problem is whenever one of these pipe
> aliases gets a message,
> >> I get an email saying "Mail delivery failed"
> which is false because I
> >> got the message... See the attached message for
> an example of what
> >> I'm referring to.
> >
> >Yup, your pipe is producing output on stdout and
> Exim is kind enough to
> >tell you about that fact.
>
> Nope. I just ran it from Emacs and it said "(Shell
> command succeeded
> with no output)".
>
> >> * Someone said you can link the mailman system
> into exim in a
> >> seamless manner without having to add aliases to
> /etc/aliases. How?
> >
> >See Nigel's HOWTO on Exim.org or in the Mailman
> tarball.
>
> OK, will do.
>
> >> * I have my webhosting ISP's mail server set as
> my smart host. But
> >> when that server is down, sendmail used to look
> at the MX list and try
> >> using the secondary server as a smart host, which
> according to my ISP
> >> it isn't supposed to do. Does exim do that? If
> so, how can I make it
> >> NOT do that? The ISP's secondary mail server has
> relaying turned off,
> >> so any mail sent through it will bounce.
> >
> >Smarthost configs will not go to backup MX'es.
>
> Sendmail did.
>
> --Bill.
>
> --
> William R Ward bill at wards.net
> http://www.wards.net/~bill/
>
-----------------------------------------------------------------------------
> "A foolish consistency is the hobgoblin of little
> minds, adored by
> little statesmen and philosophers and divines."
> - Emerson
>
>
> ATTACHMENT part 3.6 message/rfc822
> Date: Fri, 7 Feb 2003 16:01:28 -0800
> From: "Daevid Vincent" <daevid at daevid.com>
> To: "SVLUG" <svlug at lists.svlug.org>
> Subject: [svlug] how do I timeout a 'ping" request?
>
> Please send your reply directly to me as well as the
> list, I'm about
> 4300 messages in my "linux" folder behind in
> reading...
>
> I'm trying to automate finding pingable domains
> given an IP or a domain.
> The problem is that some domains don't actually
> return "pings", and on
> Linux, it just sits there forever (ugh!). So... Can
> someone tell me how
> to 'abort' or 'timeout' an itteration of a PHP loop.
> Maybe start a timer
> and then check if a number of millis has gone by?
> But it seems that
> won't work b/c PHP isn't threaded, it will just hang
> at the exec()
> command right? Conversely, anyone know how to force
> a /bin/ping to
> automatically timeout (sans hitting CTRL+C)? I 'man
> ping' but it didn't
> seem to have that option.
>
> For example, 'chorn.com' works great:
> [dae51d=pts/2]DING!@daevid:{/home/dae51d}> ping -c 1
> -q chorn.com
> PING chorn.com (209.105.160.196) from 192.168.1.254
> : 56(84) bytes of
> data.
> --- chorn.com ping statistics ---
> 1 packets transmitted, 1 received, 0% loss, time 0ms
> rtt min/avg/max/mdev = 108.041/108.041/108.041/0.000
> ms
>
>
> Yet "msn.com", "aol.com" whatever (for really
> obvious examples):
> [dae51d=pts/2]DING!@daevid:{/home/dae51d}> ping -c 1
> -q aol.com
> PING aol.com (64.12.187.24) from 192.168.1.254 :
> 56(84) bytes of data.
> [sits here doing a lot of nothing]
>
>
> Here is the PHP code I'm using...
>
> $typeArray = array ( 'www' => false,
> 'ftp' => false,
> 'mail' => false,
> 'exchange' => false,
> 'owa' => false,
> 'dns' => false,
> 'dns1' => false,
> 'dns2' => false,
> 'dns3' => false,
> 'router' => false,
> 'firewall' => false,
> 'fw' => false,
> 'fw1' => false,
> 'sql' => false,
> 'db' => false,
> 'database' => false,
> 'crm' => false
> );
>
> reset($typeArray);
> while ( list($key, $val) = each($typeArray) )
> {
> $testDomain = $key.".".$domain;
> $pingtest = exec("/bin/ping -c 1 -q
> ".$testDomain);
> //echo "<I><FONT SIZE=-3>pingtest of
> ".$testDomain." =
> ".$pingtest."</FONT></I><BR>\n";
> if ( strstr($pingtest,"rtt min") )
> {
> $typeArray[$key] = gethostbyname($testDomain);
> echo "<INPUT TYPE='checkbox' NAME='IPcheckbox[]'
> VALUE='".$typeArray[$key]."' CHECKED>".$testDomain."
> (".$typeArray[$key].")<BR>\n";
> $ipCounter++;
> }
> //sleep(3);
> }
> if ($ipCounter == 0)
> echo "<B>No pingable domains found in our test
> list</B><BR>";
>
>
>
> ATTACHMENT part 3.7 message/rfc822
> Date: Fri, 7 Feb 2003 16:04:47 -0800
> From: Will Lowe <harpo at thebackrow.net>
> To: Daevid Vincent <daevid at daevid.com>
> CC: SVLUG <svlug at lists.svlug.org>
> Subject: Re: [svlug] how do I timeout a 'ping"
> request?
>
> > I'm trying to automate finding pingable domains
> given an IP or a domain.
>
> N.B.: Scanning IP ranges may make a lot of people
> very unhappy with
> you. It will likely set off firewall and intrusion
> detection alarms
> in a lot of places, and you may get a polite call
> asking if you're an
> evil hacker.
>
> Assuming you're not an evil hacker, check out the
> "-sP" flag to nmap
> and give up on `which ping`.
>
> --
> thanks,
>
> Will
>
>
> ATTACHMENT part 3.8 message/rfc822
> Date: Fri, 7 Feb 2003 16:07:24 -0800
> From: Tim <tim at tetro.net>
> To: Siddharth Ray <sid_happenings at yahoo.com>
> CC: svlug at lists.svlug.org
> Subject: Re: [svlug] None
>
> On Thu, Feb 06, 2003 at 09:08:23AM -0800, Siddharth
> Ray wrote:
> > Hi,
> > By "system hangs" I mean the mouse pointer freezes
> +
> > the hard disk light keeps on glowing like it is
> > searching for somthing and the system doesn't
> respond.
> > So, to get it started again I have to push the
> reset
> > switch. The X-windows is not broken because
> everything
> > else is working fine.
> > -Siddharth
>
> I experienced Mozilla crashing XFree86 once.. I
> tracked it down to
> displaying a certain unicode character when using
> the XFree86 "xtt"
> module. Commenting out the Load line for that and
> uncommenting the Load
> line for "freetype" in my Modules section of my
> XF86Config fixed the
> problem.
>
> - Tim
>
>
> ATTACHMENT part 3.9 message/rfc822
> Date: 07 Feb 2003 17:53:24 -0800
> From: Ron <theotiwii at earthlink.net>
> To: Daevid Vincent <daevid at daevid.com>
> CC: SVLUG <svlug at lists.svlug.org>
> Subject: Re: [svlug] how do I timeout a 'ping"
> request?
>
> Daevid Vincent wrote:
>
> > I'm trying to automate finding pingable domains
> given an IP or a domain.
> > The problem is that some domains don't actually
> return "pings", and on
> > Linux, it just sits there forever (ugh!). So...
> Can someone tell me how
> > to 'abort' or 'timeout' an itteration of a PHP
> loop.
>
> Have you tried fping?
>
> fping is a like program which uses the
> Internet Control
> Message Protocol (ICMP) echo request to
> determine if a
> target host is responding. fping differs
> from ping in
> that you can specify any number of targets on
> the command
> line, or specify a file containing the lists
> of targets to
> ping. Instead of sending to one target until
> it times out
> or replies, fping will send out a ping
> packet and move on
> to the next target in a round-robin fashion.
>
> In the default mode, if a target replies, it
> is noted and
> removed from the list of targets to
> check; if a target
> does not respond within a certain time limit
> and/or retry
> limit it is designated as unreachable.
> fping also sup
> ports sending a specified number of pings to
> a target, or
> looping indefinitely (as in ping ).
>
> Unlike ping , fping is meant to be used in
> scripts, so its
> output is designed to be easy to parse.
>
> Here is bash code I use :-)
>
> if ($FPING $1) 2>/dev/null ; then
> message " - $1 contacted..."
> DELAY="0"
> clientMsg $1
> else [snip...]
>
> where FPING="/usr/sbin/fping -q"
>
> -Ron
>
>
>
> > _______________________________________________
> svlug mailing list
> svlug at lists.svlug.org
> http://lists.svlug.org/lists/listinfo/svlug
>
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