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Recently I installed iRedmail at work so that we could include DKIM signatures in our newsletters. Every week we send out a newsletter to 96,000 former customers. It takes about 13 hours to send the newsletter. Yahoo is probably our most important email domain and they want us to implement DKIM. A couple of weeks [...]

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Yesterday I opted to create self-signed certificates for my local servers. Most of my local servers already had self-signed certificates with default names so it looked like a simple task. I found this document, Creating Certificate Authorities and self-signed SSL certificates, and in a few minutes I created a new Certificate Authority and replaced my [...]

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I keep suffering from memory loss when it comes to using Openfiler. I use it so infrequently I keep forgetting how to add a partition to Openfiler. The user interface is not very intuitive so I keep recreating my steps. So I am posting this procedure as a reminder. Click on the link, Volumes (https://filer:446/admin/volumes.html), [...]

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This article was timely. I had just installed virtual version of Ubuntu on my ESXi server and set up VNC so I could access it. It was okay but FreeNX is a more elegant solution. The combination of FreeNX and Firehol to setup the firewall makes it a winner in my book. How To Set [...]

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A couple of weeks ago I installed the Network Monitoring Appliance using the tutorial on HowToForge.com. Prior to installing the Network Monitoring Appliance I was planning to give the latest community version of GroundWork Monitor, http://www.groundworkopensource.com/products/community-edition/index.html another trial. My network monitoring objectives were to have the Network Monitoring appliance notify me of problems on a [...]

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In the first installment of Adventures with iRedMail I got it to send emails but I left the MS Exchange integration for another day. Since then I have updated my DNS zone with the DKIM information, set up local DNS information, decided on naming standards, and reconfigured Postfix several times before I got it right. [...]

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I read this article on HowtoForge and decided to give it a try. I was not as successful as the author. iRedMail: Full-Featured Mail Server With LDAP, Postfix, RoundCube, Dovecot, ClamAV, DKIM, SPF On CentOS 5.x Debian (Lenny) 5.0.1 iRedMail is a shell script that lets you quickly deploy a full-featured mail solution in less [...]

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  The News: Ruby on Rails performance is dominated by garbage collection. We present a set of patches to greatly improve Rails performance and show how to profile memory usage to get further performance gains. What’s at Stake: Rails is slow for many uses and did not lend itself well to optimization. Significant performance gains [...]

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KeePassX – The Official KeePassX Homepage KeePassX saves many different information e.g. user names, passwords, urls, attachmets and comments in one single database. Yesterday I got around to installing KeePassX on my Centos server. The rpm version worked fine but I had to manually create a menu item. For fun I downloaded the new versions [...]

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One of the annoying things about maintaining CENTOS installations is performing system maintenance as the super user from the command line. Don’t get me wrong but I was programming before graphical interfaces(BGI). The command line is a good and trusty way to perform maintenance. As long as everything works you can get by with a [...]

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Since I had recently setup my laptop with C++ version of Visual Studio 8 Express, I was curious about setting up a similar IDE environment on Linux. I initially tried to set up Anjuta DevStudio and I failed miserably. I am running CentOS 5.1. There does not appear to be a recent RPM of Anjuta. [...]

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  GroundWork Monitor Open Source 5.1 A complete availability monitoring solution that ensures IT infrastructure uptime while identifying issues before they become real problems. Unifies best-of-breed open source tools – Nagios, Nmap, SNMP TT, PHP, Apache, MySQL and more — through PHP/AJAX-based components and an integrated user interface to deliver the extensible functionality you require. [...]

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If you get the following error message: /usr/lib/vmware-player/bin/vmplayer: /usr/lib/vmware-player/lib/libpng12.so.0/libpng12.so.0: no version information available (required by /usr/lib/libcairo.so.2) Apply the following fix mv /usr/lib/vmware/lib/libpng12.so.0/libpng12.so.0 /usr/lib/vmware/lib/libpng12.so.0/libpng12.so.0.disabledln -sf /usr/lib/libpng12.so.0 /usr/lib/vmware/lib/libpng12.so.0/libpng12.so.0mv /usr/lib/vmware/lib/libgcc_s.so.1/libgcc_s.so.1 /usr/lib/vmware/lib/libgcc_s.so.1/libgcc_s.so.1.disabledln -sf /lib/libgcc_s.so.1 /usr/lib/vmware/lib/libgcc_s.so.1/libgcc_s.so.1 Obay Home » Blog Archive » Installing VMWare Player on Ubuntu Yup, this works for Centos 5. I upgraded to Server 1.04 today and [...]

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The folks have updated WordPress again and I have been evaluating different methods of upgrading. The standard method works but I have been wanting to streamline the process for remote hosts. For my locally hosted blog I used the Updating WordPress with Subversion method. This is pretty slick! I had previously checked out a copy [...]

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The Joe writes: The install goes great, but when I run the server I get the following error:/usr/lib/vmware/bin/vmware: /usr/lib/vmware/lib/libpng12.so.0/libpng12.so.0: no version information available (required by /usr/lib/libcairo.so.2) As far as I can tell, the libpng12.so.0 that gets installed to the /usr/lib/vmware/lib/libpng12.so.0 directory is the wrong version, your system should have a current version installed. To fix [...]

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NIC Broadcom AC 131 not properly detected – Ubuntu Forums we are also having problems with the Shuttle SS31T, we can boot from a live CD and install the OS to a IDE hard drive but the NIC and SATA are not recognised?Do you have any tips on how to get the NIC and SATA [...]

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I finally got motivated to resuscitate my Ghettobox2006. It took me a little debugging but I finally got it to recognize my SATA drive. My plan was to use this box as a general purpose Linux box running several VMware guests. The problem was that I could not get the box to boot. This was [...]

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  Data sheets for hard drives have always included a specification for reliability expressed in hours: commonly known as MTBF (mean time between failures), or sometimes the mean time to failure. Same difference: One way assumes that a drive will be fixed, and the other, replaced. Nowadays, this number is around a million hours for [...]

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Accessing Windows Or Samba Shares Using AutoFS You already installed Linux on your networked desktop PC and now you want to work with files stored on some other PCs in your network. This is where autofs comes into play. This tutorial shows how to configure autofs to use CIFS to access Windows or Samba shares [...]

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Set Up Ubuntu-Server 6.10 As A Firewall/Gateway For Your Small Business Environment This tutorial shows how to set up a Ubuntu 6.10 server (“Edgy Eft”) as a firewall and gateway for small/medium networks. The article covers the installation/configuration of services such as Shorewall, NAT, caching nameserver, DHCP server, VPN server, Webmin, munin, Apache, Squirrelmail, Postfix, [...]

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