We had a problem last weekend with Postfix not accepting email for a single domain when it was coming from outside our network, while messages from hosts on the local network were accepted and routed with no problems. Messages from outside the network were rejected with a 450 (temporary) code and the error message “Recipient [...]
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I recently needed to add monitoring of a UPS powering network equipment to a Linux server already monitoring one USB-connected UPS. Since the second UPS also uses a USB connection for monitoring apcpusd (the standard UPS management package for Linux systems) was not seeing it. This is not a fault of the software – it’s [...] I ran into a minor difficulty recently on a Linux desktop PC (CentOS 5.4) updated to the recently released OpenOffice.org 3.2, specifically the Go-Oo.org variant that includes some options and tweaks left out of the primary branch. OpenOffice.org 3.2 would start without difficulties, but as soon as I started to type the application would completely [...] I occasionally get requests from clients for assistance with sending out email marketing to their existing clients. My advice in these situations is always the same: Use A Service. Every client that I’ve dealt with that’s interested in this kind of marketing starts out planning to do it using their regular email account, but there are [...] I’m regularly asked by customers “Which laser printer should we get?” or “What’s the cheapest good laser printer?” Here’s an initial stab at answering those questions. I’ve been pulling together some numbers on the costs to purchase & run assorted monochrome laser printers. While there’s still work to be done on tracking down some items [...] I’m currently working up an article on the total cost of ownership (TCO) for printers and choosing printers for your office, but while I work on the details (including researching costs for a variety of printers) here’s some information on the calculations involved. This is important for small to midsize offices because the variation in [...] I had an interesting problem with a server (Windows 2003 Standard) at a small business (6 users total) the other day – a very long startup time. The server in question is a standalone domain controller/DC as well as a database/application server and file/print server. Terminal Services is installed & configured, but rarely used – [...] While unrelated to most of the content of this site, I’d like to call your attention to David McCandless’ blog Information Is Beautiful (about graphics and data visualization) and in particular to a very nice piece on What Makes Good Information Design? – in particular the key dimensions of Interestingness, Integrity, Function and Form. Obvious [...] Ran into an interesting problem this evening – I was helping someone who was having problems with installing Office 2007 on an XP system with Office 2000 (I believe Professional) installed. The problem was that when the actual installation process started, it would hang up because another installation was running. The standard fix for that is [...] Earlier this week I spent some time troubleshooting a browser-based application that a client is using. The problem cropped up on a PC with a clean install of Windows XP SP3 after assorted system corruption that wasn’t worth the time to repair. |
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