What do you run on XenServer?

@XenServerArmy asked in this tweet what applications/services people are running on their XenServer deployments. So, here’s a quick list for i-worx: Read more…

“Gone Google” Marketing Fail…

Google is touting their Google Apps offering for business with a new post on the official Google Blog (link). The post presents a link to a gonegoogle.com site, which runs you through a calculator of how much cash you can save by “Going Google”. The calculator seems to be based on industry averages for things like uptime, storage costs, remote access, etc., and presents a nice little summary poster at the end. An example is given from guest poster smartfurniture.com.

A nice little surprise comes up, though, when you click on the link to view the sample poster for Smart Furniture.

Read more…

Categories: cloud, fail, google, news, web

WordPress Theme Updated

In case it isn’t obvious: I switched up the theme for the site. I was never really too fond of the light-green touch of the previous theme and the code styling especially bugged me, but it was a fairly clean and so I just kind of stuck with it.

Anyhow; comments & feedback appreciated.

Categories: news, web

Cannot install ESET Security on Debian 4.0 Etch Virtuozzo VPS

February 11, 2009 2 comments

As part of some mail filter testing, I needed to install ESET Mail Security onto a Debian 4.0 Etch VPS running on Virtuozzo. As a side-note, I found that the install package for ESET’s Gateway Filter, Mail Security, and File Server Security for Linux is all the exact same package; the functionality is basically just controlled/activated by means of licensing the appropriate component.

Anyway, the download comes as an installation script called esets.i386.deb.bin. Running that script outputs a license agreement that you have to accept, produces a .deb package called esets.i386.deb, and outputs instructions on how to install the .deb package by using dpkg and import the license file. The .deb package installed just fine on another Debian test box, but when I attempted to run dpkg –i esets.i386.deb on the Virtuozzo VPS, tar squawked at me that it could not open /dev/stdin and the installation bailed:

hostname:/usr/local/src/eset# dpkg -i esets-3.0.11.i386.deb
Selecting previously deselected package esets.
(Reading database ... 24639 files and directories currently installed.)
Unpacking esets (from esets-3.0.11.i386.deb) ...
Setting up esets (3.0.11) ...
Unpacking esets modules ...
tar: /dev/stdin: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
dpkg: error processing esets (--install):
subprocess post-installation script returned error exit status 2
Errors were encountered while processing:
esets

Read more…

Categories: howto, linux, nod32, troubleshooting

“550 4.4.7 QUEUE.Expired; message expired” when emailing mail-enabled Public folder

February 11, 2009 1 comment

We’ve been working on some major upgrades to our Exchange environment over the last while. During the course of that, we started receiving NDR’s for messages sent to mail-enabled public folders. Initially, these were “MapiExceptionNotAuthorized” messages, which are related to permissions. Those were sorted out without too much trouble, as the NDR is at least somewhat descriptive. But then we started receiving a very generic NDR of #550 4.4.7 QUEUE.Expired; message expired ##.

…not really much to go on. Exchange 2007 does give some more “in plain English, please!” information in its NDR’s, but that also wasn’t much help:

Delivery has failed to these recipients or distribution lists:

[user display name]
Microsoft Exchange has been trying to deliver this message without success and has stopped trying. Please try sending this message again, or provide the following diagnostic text to your system administrator.

Wow…that was helpful…

Read more…

Workaround for mysqldump SSL error 2026 bug #27669

February 9, 2009 1 comment

I had not previously played aroung much with MySQL replication, but got the chance to do so recently. I’m doing some testing with a new mail filter setup composed of amavisd-new, SpamAssassin, and some other SA modules running through Postfix on Debian Etch. The setup uses Maia Mailguard as a web front-end and management system, including per-user settings and quarantines. We’re using MySQL for the database backend for Maia for storing quarantines, per-user settings and the like, but wanted to have a dual-MX setup with a secondary MX sitting in a remote site.

Read more…

Categories: linux, mysql, ssl, web

Windows Media Player 11 Breaks Internet Connectivity

Alright, so the title for this post seems pretty out there, but I can guarantee you that I have come across this on multiple machines. I’m not saying “If you install Windows Media Player 11 on your computer, networking will break,” I’m just saying that if you experience the symptoms outlined below and you’re stuck, trying uninstalling WM11 and the WM11 codec; you just might get lucky.

So, one of the other techs in the office calls me over: He’s been beating his head against a wall with a remote user being unable to get internet connectivity on his Windows XP workstation. The tech has been on this thing for hours, tried just about everything he can think of shy of a workstation rebuild, and he’s looking for some team support. I have him throw the ticket my way; I figure that another set of eyes can only be helpful. With a bit of digging, we isolate the symptoms:

  • Full connectivity to the local server is available
  • Name resolution is still solid
  • Pings are working to both local and remote addresses
  • Anything higher up the stack than pings only work locally, and bail as soon as you cross a router. This includes file shares, RDP, FTP, HTTP/s, MAPI, and I’m guessing anything else higher than layer 4. Read more…
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