Archive for June, 2008

If-Modified-Since date formats in Firefox and IE7

Saturday, June 21st, 2008

Everybody who has a webserver wants to use less bandwidth. A webserver sends out a lot of copies of the same information. Stylesheets, images, static HTML pages, javascript files. Many of these rarely, if ever,  change from one visit by a browser to the next. Fortunately, there are a few ...

What’s my IP address?

Tuesday, June 17th, 2008

While working on the ZoneEdit update script, I did a survey of IP address checking techniques, 4 of them described below, and a fifth prototype which I think is the fastest and simplest IP address check on the Internet. I host several sites on servers in my home. I have ...

Denon ethernet cable: CAT5 goes to 11

Monday, June 16th, 2008

I saw this on slashdot, and just had to make sure you didn't miss it. I would pay extra for good quality ethernet cables. Since I moved to Malaysia, I've been buying 3 ethernet cables for every 1 that has proven reliable. Broken wires, bad joints with pins in the ...

Sendmail DSN – forwarding root’s mail

Sunday, June 15th, 2008

Further to my earlier article "Streamyx SMTP server authentication problem", the other part of my problem was the DSN - Delivery Status Notification emails were not coming to any of my interactive users. I thought at the time they might be going to the sender, since the mails were coming ...

Zoneedit.com Dynamic DNS update script

Friday, June 13th, 2008

We use both DynDNS and ZoneEdit for our Dynamic DNS. We use inadyn for our Dynamic DNS Custom Zones, but since inadyn uses DynDNS's checkip service, it doesn't seem fair to use it for our ZoneEdit zones too. zoneeditscript is freshly written as of 12th June 2008, so maybe there will ...