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Articles indexed Saturday November 19 2011

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• Exchange 2010 periodically stops responding to SMTP events with error 421 4.4.1 Connection timed out

  - by Michael Shimmins

  After some help diagnosing why Exchange 2010 Enterprise stops responding to SMTP events. I can't find a pattern to it. It doesn't appear to be an actual timeout, as the server responds immediately with the error. To reproduce it I telnet into the server on port 25 and issue a EHLO. The server immediately replies with the 421: 421 4.4.1 Connection timed out Once this starts happening I've found restarting the exchange box is the only reliable way to get it flowing again. Sometimes restarting the Transport service or the mailbox attendant service seems to fix it, but this could be coincidental as it often has no effect.

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• Startup script for Red5 on Ubuntu 9.04

  - by user49249

  I am creating startup script for Red5 on Ubuntu. Red5 is installed in /opt/red5 Following is a working script on a CentOS Box on which Red5 is running [code] ==========Start init script ========== #!/bin/sh PROG=red5 RED5_HOME=/opt/red5/dist DAEMON=$RED5_HOME/$PROG.sh PIDFILE=/var/run/$PROG.pid # Source function library . /etc/rc.d/init.d/functions [ -r /etc/sysconfig/red5 ] && . /etc/sysconfig/red5 RETVAL=0 case "$1" in start) echo -n $"Starting $PROG: " cd $RED5_HOME $DAEMON >/dev/null 2>/dev/null & RETVAL=$? if [ $RETVAL -eq 0 ]; then echo $! > $PIDFILE touch /var/lock/subsys/$PROG fi [ $RETVAL -eq 0 ] && success $"$PROG startup" || failure $"$PROG startup" echo ;; stop) echo -n $"Shutting down $PROG: " killproc -p $PIDFILE RETVAL=$? echo [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$PROG ;; restart) $0 stop $0 start ;; status) status $PROG -p $PIDFILE RETVAL=$? ;; *) echo $"Usage: $0 {start|stop|restart|status}" RETVAL=1 esac exit $RETVAL [/code] What do I need to replace for Ubuntu in the above script. My Red5 is in /opt/red5/ and to start it manually I always do /opt/red5/dist/red5.sh from Ubuntu As I did not find rc.d/functions on Ubuntu on my laptop also /etc/init.d/functions I did not existed. I would like to be able to use them with service as Red hat distributions do. I checked /lib/lsb/init-functions.

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• Using watch to run a shell script - but the script goes defunct

  - by PHP-Steven

  So I want to keep an eye on my network connectivity so I can make a report for my ISP. (seems like the modem goes out for about 30-60 seconds about once a day) So I copied this handy little script http://www.cyberciti.biz/tips/simple-linux-and-unix-system-monitoring-with-ping-command-and-scripts.html And an running it with watch -n 15 ./ping-test.sh I have been testing it by pulling the plug on my modem. The first time watch runs the script after the network goes out it runs fine (sends some email) and then goes defunct. Once networking is restored the script "finishes" and then watch runs it again. So I'm getting mail for when the network goes down, but not how long it was down for. If I run the script straight from the command line it runs (emails) and then exits. Any ideas why? How can I get the script to keep running once the network is down?

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• Run script before shutdown/restart

  - by dtbarne

  I'd like to run a PHP script when an instance is told to shutdown, but of course before it actually finishes shutting down. My particular script is just looking to push some log files from the local partition to a another server. I've got the gist of how this process works, but I need some clarification. How I understand it. Please correct me if I'm wrong. Create an executable script in /etc/init.d (lets call it /etc/init.d/push-logs) Create a symlink to /etc/init.d/push-logs from /etc/rc0.d (shutdown) and /etc/rc6.d (reboot). The name should be KXXpush-logs Here's my questions: Of course - am I understanding correctly? For #2 above - it sounds like the lower the XX the better - is there too low a number I can use? Does it matter if it shares a number with another script? Does the script in /etc/init.d/push-logs HAVE to follow the standard init.d template (supporting start/stop, etc. commands)? This doesn't really apply to my use case. If possible I just want the script to be the following: #!/bin/sh # # Run PHP file prior to shutdown # /usr/bin/php /path/to/php_file.php

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• rhel/centos vs. ubuntu (possibly other debian-based systems) linux in handling duplicate ips in the same subnet

  - by johnshen64

  This has bothered me for quite a while but I never found out why or how to change the behavior. ip duplicates could be caused by typos or dhcp errors etc., but they do occur from time to time. in rpm-based systems such as centos, the old server with the duplicate ip wins, and the new server will get an error in bringing up the nic (ip address already used). this is somewhat harmless because we can just fix the system that is coming up. ubuntu only the other hand happily grabs the used ip for itself and leave the old server/device without a valid ip. this is the more dangerous behavior because it causes outages. what i want is to change the ubuntu behavior to that of the centos/rhel so would appreciate any help.

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• Apache mod_rewrite weird behavior in Internet Explorer

  - by morrty

  I'm attempting to setup redirection for a couple of root domains. Firstly, here is the code in my httpd-vhosts.conf file: <VirtualHost *:80> ServerAdmin ****@example.com ServerName example.com ServerAlias example2.com RewriteEngine On RewriteCond %{HTTP_HOST} !^192\.168\.0\.1$ # This is our WAN IP RewriteCond %{HTTP_HOST} !^www\. [NC] RewriteCond %{HTTP_HOST} !^$ RewriteRule ^/?(.*) http://www.%{HTTP_HOST}/$1 [L,R,NE] </VirtualHost> What this does is redirect the root domain of example.com or example2.com or any host other than www to www.example(2).com The part I'm having a problem with is the RewriteRule itself. the $1 is supposed to match the pattern of the RewriteRule and add it in the substitution. For example: "http://example.com/test.html" should rewrite to "http://www.example.com/test.html" It works in all modern browsers like it's supposed to except for IE8 or IE9 (I didn't test other IE versions). In IE, this works: "http://example.com" to "http://www.example.com" In IE, this does not work: "http://example.com/test.html" to "http://www.example.com/test.html" Does anyone have an explanation for this behavior? I hope I've explained it well enough. Thank you.

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• mod_rewrite to page with HTTP auth

  - by Joe

  I'm trying to use modrewrite to proxy http:://myserver/cam1 to an internal, http-auth protected server at http:://admin:[email protected]/cgi/mjpg/mjpg.cgi No matter what I try, though, requests to http:://myserver/cam1 always prompt me for the username and password. I've tried all of these to no avail. RewriteRule ^/cam1 http://admin:[email protected]/cgi/mjpg/mjpg.cgi [P,L] RewriteRule ^/cam1 http://192.168.99.130/cgi/mjpg/mjpg.cgi [E=Authorization:Basic\ YWRtaW46YWRtaW4=,P,L] RewriteRule ^/cam1 http://192.168.99.130/cgi/mjpg/mjpg.cgi [E=HTTP_USERID:admin,E=HTTP_PASSWORD:admin,P,L]` Anybody have any other ideas?

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• django url matching with Lighttpd fastcgi

  - by 7seb

  I have a problem with url. I can access the djando app home page ( localhost/djangotest/ ) but can't access the admin section ( localhost/djangotest/admin/ ). I can access it using the django server instead of lighttpd. Lighttp conf : fastcgi.server = ( "/djangotest/" => ( "main" => ( "host" => "127.0.0.1", "port" => 3033, "check-local" => "disable", ) ), ) url.rewrite-once = ( "^(/media.*)$" => "$1", "^/favicon\.ico$" => "/media/favicon.ico", "^/djangotest/[^?](.*)$" => "/djangotest/?$1", ) The django url.py is just : (i just uncommented the good lines) : from django.conf.urls.defaults import patterns, include, url from django.contrib import admin admin.autodiscover() urlpatterns = patterns('', url(r'^admin/', include(admin.site.urls)), ) I tried many things but without success ... (no need to link to https://docs.djangoproject.com/en/dev/howto/deployment/fastcgi/ ) lighttpd/1.4.28 Python 2.7.2+ Django 1.3.0

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• Windows XP/7: custom routing for VPN connection

  - by Peter Becker

  We are dealing with a badly configured VPN connection from a vendor, which set up the default gateway but doesn't route traffic anywhere beyond their VPN zone. I managed to do some ad-hoc routing to configure a computer in a way that it can reach the vendor's VPN, our local network as well as the internet. I then tried to turn this into a script, but that failed since the interface number of the VPN changes on every connection. Is there a way in Windows XP and/or Windows 7 to configure custom routing on the client side of a VPN connection? What I would like to do is to have a script running just after the connection comes up that changes the routing table (similar to an ifup script on UNIX).

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• Problems with mailenable when sending to yahoo mail

  - by Mee

  I'm testing sending emails from mailenable webmail. I have no problems sending mail to gmail or hotmail, both work fine, but yahoo mail sends my messages to the spam folder and shows the attachment icon for the message even though the message doesn't contain any attachments, it's just plain text. It only includes a reply to a previous message, like this: message text ----- Original Message ----- original message text I copied the message content and sent it from gmail to yahoo and the attachment icon didn't show which makes me believe it's something with mailenable. What could possibly be wrong? Also, is there a white list for yahoo mail that I can join? And also for other popular webmail? I'm going to use this on a production website (site visitors use the contact us form to send messages to the site - the mail enable server running on the same machine as the web server - then I check the messages using the mailenable webmail and reply them). This is really important to me, your help would be really appreciated ...

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• Effects of HTTP/TCP connection handshakes and server performance

  - by Blankman

  When running apache bench on the same server as the website like: ab -n 1000 -c 10 localhost:8080/ I am most probably not getting accurate results when compared to users hitting the server from various locations. I'm trying to understand how or rather why this will effect real world performance since a user in china will have different latency issues when compared to someone in the same state/country. Say my web server has a maximum thread limit of 100. Can someone explain in detail how end user latency can/will effect server performance. I'm assuming here that each request will be computed equally at say 10ms. What I'm not understand is how external factors can effect overal server performance, specifically internet connections (location, or even device like mobile) and http/tcp handshakes etc.

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• ERROR: Can't find the archive-keyring

  - by 23tux

  I'm trying to upgrade my Debian Lenny to Squeeze. I've replaced the word lenny to squeeze in sources.list and ran apt-get clean apt-get update apt-get dist-upgrade But after a while, I get this error Preconfiguring packages ... Setting up debian-archive-keyring (2010.08.28) ... ERROR: Can't find the archive-keyring Is the ubuntu-keyring package installed? dpkg: error processing debian-archive-keyring (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: debian-archive-keyring E: Sub-process /usr/bin/dpkg returned an error code (1) So I tried to install apt-get -f install debian-archive-keyring and I got the same error. Then I tried to install apt-get -f install ubuntu-keyring and I got this error: Reading package lists... Done Building dependency tree Reading state information... Done Package ubuntu-keyring is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package ubuntu-keyring has no installation candidate Maybe I have the wrong sources in my sources.list: deb ftp://mirror.hetzner.de/debian/packages squeeze main contrib non-free deb ftp://mirror.hetzner.de/debian/security squeeze/updates main contrib non-free deb http://ftp.de.debian.org/debian/ squeeze main non-free contrib deb-src http://ftp.de.debian.org/debian/ squeeze main non-free contrib deb http://security.debian.org/ squeeze/updates main contrib non-free deb-src http://security.debian.org/ squeeze/updates main contrib non-free Hope anyone can help me, thx, tux

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• Deploying in windows 2008 [closed]

  - by Blisk

  Possible Duplicate: How is software deployed via Active Directory? I have trying to deploy a programs, mapped network drives and taks schedule job. I didn't manage to start a script on log on PC until I did it in Default Domain Policy. But when I did that I have installed programs on my server too. And mapped network drives, etc. So I don't know how to manage to do all of that but not to install anything on server over GPO. I still didn't manage to deploy a schedule task job on clients. I manage to put it on server bit not on clients. I need that schedule task because I need to update software on clients every week. I can't manual update flash player, adobe reader, firefox, etc on clients. And People useing client PC even doesn't know how to do it if they have abillity. Clients doesn't have admin rights.

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• AsteriskNow Migration / Shared Extension Space

  - by Aaron C. de Bruyn

  I am testing the possibility of migrating from an old Avaya phone system to AsteriskNow. The migration would cover several hundred phones--but spread out over several years. (Management wants to move buildings to the new phone system one by one as cables get cut or time permits.) Two other directive is that extensions must not change and they want a GUI that other admins (non-Linux geeks) can manage. They currently use 9XXX for all extensions. We linked the Avaya and Asterisk box via PRI card and they both are communicating. From the Avaya side, if we move (for example) extension 9001 to Asterisk, we forward the call over the PRI to the AsteriskNow box and the SIP phone rings. In AsteriskNow we have an outgoing rule '_9XXX' that routes all 4-digit extensions starting with 9 back to Avaya. Here's the trouble. Dialing 9001 (the extension moved over to AsteriskNow) causes the call to be routed out the PRI to the Avaya box, then the Avaya box routes the call back to Asterisk, and Asterisk routes it to the SIP phone. As we get more and more users switched over, it will use up more and more channels over the PRI card. Is there a way I can ask Asterisk to check it's local extensions first--then forward off to the Avaya system if it starts with '_9XXX'? (I know how I can do it when editing the raw config files, I'm just looking for a way to do it in the GUI so other admins can manage it if necessary.) As a last-ditch plan, I know I can specifically add '_9001' as an outgoing call rule and sent it directly to extension 9001--but I'd really hate to do that for several hundred phones

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• Tomcat 6 IP restrictions

  - by KB22

  I need to protect a certain folder within a web application of mine from access from outside of an defined IP range. With O'Reilly's Tomcat Tips I figured that: <Context path="/path/to/secret_files" ...> <Valve className="org.apache.catalina.valves.RemoteAddrValve" allow="127.0.0.1" deny=""/> </Context> Is the way to go? I'm not that much into tomcat configuration so I'm dazzled a little as to where to put these restrictions. Do I put this Within my web.xml or is this a thing I need to add to some general tomcat conf file?

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• Apache2 can't close connections with restart

  - by Theta

  I'm running a Debian webserver with Apache2 and the restart command started giving me an error. root@srv:~# service apache2 stop Stopping web server: apache2. root@srv:~# service apache2 start Starting web server: apache2(98)Address already in use: make_sock: could not bind to address [::]:80 (98)Address already in use: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down Unable to open logs Action 'start' failed. The Apache error log may have more information. failed! Occasionally it actually will restart without a problem but usually I have to killall -9 apache2 first. Someone on the Debian IRC had me check my active apache2 connections and it turns out they aren't quitting and dozens of them are staying open. How can I get these to eventually time out?

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• proftpd on debian - authuserfile

  - by dirknibleck

  I have installed proftpd on my debian 4.0 server. I have modified the proftpd.conf file so that there is a statement for AuthUserFile, which points to a valid file. The file is configured per the proftpd specs, however the user that I have placed in this file is not able to log-in to the server. What could I be doing wrong? AuthUserFile is of the format: username:passwd:999:1002:www:/var/www:/bin/bash

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• Glassfish with Webservices on non default port

  - by Rick

  I have a simple web service that I created that deploys perfectly on a default Glassfish V2.1 install on both a windows and a linux system. HOWEVER, In the production environment, Glassfish has the default port for the domain changed from port 8080 to port 80. Now when I try to deploy the web service it will not deploy to the server. The production server is brand new and only was a few webpages on it. Other than the port everything else seems to be the same. I cannot change the port on the production server. In fact I tried to change the port on the linux test server tfrom 8080 to port 80 and I get the same result as the production server. Any ideas - other than don't use glassfish? :)

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• check_snmp with snmpv3 protocol giving "Unkown Report message" error

  - by John

  I'm trying to add a nagios command to use snmpv3 for monitoring printer status messages. When using the check_snmp command, I get the following error: External command error: snmpget: Unknown Report message Here is the command I'm typing in: ./check_snmp -P 3 -H <hostname> -L authPriv -U snmpuser -A snmppassword -X snmppassword -o 1.3.6.1.4.1.11.2.4.3.1.2.0 -C public -d "STRING:" -a MD5 These values for auth key, private key, username, etc all work when using snmpwalk. Can someone enlighten me as to what that error message really means? EDIT: It looks like check_snmp isn't taking my v3 credentials when passing over to snmpget. Here is my input with the verbose option: ./check_snmp -H <hostname> -o 1.3.6.1.2.1.2.2.1.10.1 -C public -m ALL -P 3 -L authPriv -U snmpuser -a MD5 -A snmppassword -x DES -X snmppassword -v And here is the output: /usr/bin/snmpget -t 1 -r 5 -m ALL -v 3 [authpriv] <hostname>:161 1.3.6.1.2.1.2.2.1.10.1 External command error: snmpget: Unknown Report message So I guess now my question would be: why isn't check_snmp passing all the commandline options to snmpget?

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• Problems configuring an SSH tunnel to a Nexentastor appliance for use with headless Crashplan

  - by Rob Smallshire

  Problem I am attempting to configure an SSH tunnel to a NexentaStor appliance from either a Windows or Linux computer so that I can connect a Crashplan Desktop GUI to a headless Crashplan server running on the Nexenta box, according to these instructions on the Crashplan support site: Connect to a Headless CrashPlan Desktop. So far, I've failed to get a working SSH tunnel from from either either a Windows client (using Putty) or a Linux client (using command line SSH). I'm fairly sure the problem is at the receiving end with NexentaStor. A blog article - CrashPlan for Backup on Nexenta - indicates that it could be made to work only after "after enabling TCP forwarding in Nexenta in /etc/ssh/sshd_config" - although I'm not sure how to go about that or specifically what I need to do. Things I have tried Ensuring the Crashplan server on the Nexenta box is listening on port 4243 $ netstat -na | grep LISTEN | grep 42 127.0.0.1.4243 *.* 0 0 131072 0 LISTEN *.4242 *.* 0 0 65928 0 LISTEN Establishing a tunnel from a Linux host: $ ssh -L 4200:localhost:4243 admin:10.0.0.56 and then, from another terminal on the Linux host, using telnet to verify the tunnel: $ telnet localhost 4200 Trying ::1... Connected to localhost. Escape character is #^]'. with nothing more, although the Crashplan server should respond with something. From Windows, using PuTTY have followed the instructions on the Crashplan support site to establish an equivalent tunnel, but then telnet on Windows gives me no response at all and the Crashplan GUI can't connect either. The PuTTY log for the tunnelled connection shows reasonable output: ... 2011-11-18 21:09:57 Opened channel for session 2011-11-18 21:09:57 Local port 4200 forwarding to localhost:4243 2011-11-18 21:09:57 Allocated pty (ospeed 38400bps, ispeed 38400bps) 2011-11-18 21:09:57 Started a shell/command 2011-11-18 21:10:09 Opening forwarded connection to localhost:4243 but the telnet localhost 4200 command from Windows does nothing at all - it just waits with a blank terminal. On the NexentaStor server I've examined the /etc/ssh/sshd_config file and everything seems 'normal' - and I've commented out the ListenAddress entries to ensure that I'm listening on all interfaces. How can I establish a tunnel, and how can I verify that it is working?

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• How to scale page size down in Adobe Acrobat X Pro?

  - by WilliamKF

  I scanned a document on a scanner at a friend's house and the pdf ended up being 35 inches by 45 inches in size. I think this the cause of the trouble had for the person I sent it to, they get the error "insufficient image". How can I scale this down in Adobe Acrobat X Pro to a normal 8.5x11 inch sheet so that I can see if that resolves their issue and I can share the document with them. I cannot rescan the document, as I no longer have it. Acrobat is running on Windows 7 OS. The scanner was an HP OfficeJet Pro L7650 All-in-one.

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• Random Sampling in Excel

  - by bonsvr

  I have an Excel sheet as follows: NO NAME AMOUNT 1 A 50 1 B 50 2 A 100 2 C 100 3 D 70 3 B 70 4 A 30 4 F 30 5 C 150 5 G 150 . . . . There are let's say 10,000 rows. I want to get a random sample from rows. There are 2 conditions: 1. Sampling must be based on "NO" column. 2. Size of the sample is determined by the user: it can be %5, %10 or %20. For example, one decides to randomly choose %20 of total rows in the above example: The result is like: NO NAME AMOUNT 2 A 100 2 C 100 90 Z 500 90 E 500 . . . . There should be 2,000 rows. I don't know whether my question is too specific. I am new to Excel VBA, and I faced a situation like this. Above process is about getting a random sample from an account ledger for auditing purposes.

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• unable to boot into safe mode even after fixing registry

  - by Anirudh Goel

  I have a windows XP sp3 system which is affected by Sality Worm. The usual symptoms of taskmanager and regedit disabled were there, and i saw that i was unable to boot my system in safe mode. Then i found that the sality worm removes the SAFEBOOT keys from registry hive. So i downloaded this reg file from http://support.kaspersky.com/faq/?qid=208279889 and was successfully able to update the reg file to my system. But still when i hit F8 during boot and select safe mode option, it still restarts after loading mup.sys file. i don't know what more to do to get to safe mode. The virus is still there in dormant stage, i can verify that because taskmanager and regedit is not disabled after i restarted in normal mode and i could browse any site and it did not kill the browser process. I also ran the salitykiller from same link above and it healed all infected exe files. This is related to another question which i have asked here,but i don't see how a common solution can solve both of those problems. Any help folks? Thanks

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• Setting up a wireless access point with Ubuntu server

  - by Solignis

  I am trying to setup a wifi access point with my Ubuntu server, everything "seems" to be good since I got a better wifi radio (long story). But now I am a little confused, when my Android phone tries to associate with the AP it is able to with no problem but then it cannot get an IP address from my DHCP server. I have tried messing with firewall rules, nothing... I tried making a bridge interface as per what I am told I had to do. ( Not sure if i did it right though). What I am trying to do if make the wireless interface an extention of my eth0 network. Am I on the right track or am I going about the wrong way?

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• Is putting the swapfile & temp folder to ramdisk a good idea in Windows 7 64 bit with lots of RAM?

  - by Tony_Henrich

  I want my Windows to run as fast as possible. If I have 12GB RAM in Windows 7 64bit, quad core CPU, and all apps fit in memory, will the swap file ever be used for anything? The question is about if it's a good idea to put the swap file in a RAM disk. Would a RAM disk help in any way or will Windows intelligently use all the available memory for all its work? I am also thinking of putting the temp folder on a RAM disk. I know the RAM disk is volatile memory and I don't care about its content if it gets lost.

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