Posted by: Jason Tramer
best practices, DNS
I am really tired of the way some people handle DNS record changes. It’s like people (even people in the IT industry) don’t seem to realize that changes are not instant. It takes on average between 24-48 hours for any record changes to propagate across the Internet and yet you have DNS cowboys trying to cut-over records and then wonder why names aren’t resolving, or mail isn’t flowing.
Best rule of thumb I have seen is maneuver your record change in a way that for that 24-48 hour period either record will work, if you can’t do that at least make your change on Friday before you head to the pub and make sure everyone knows that things may not work properly during the weekend.