On 27 Oct 2006, at 00:39, Simon Lyall wrote:
After a few recent instances I am getting sick of companies who transfer their DNS/Servers from one provider to another and then wonder why the old data is still cached by 3rd parties for 24 hours (or whatever).
On this _particular_ topic, dropping the TTL will not always result in expected behaviour, a lot of ISPs in the UK will ignore TTLs which are less than a day. When I did a dc migration most recently, I tried to have public facing boxes on the old and new address for a week or so. Sometimes this is easy to do (e.g. mail, just set up a temp secondary MX on the old address), sometimes this is trickier (e.g. web, but we put a transparent proxy on the old address for a week.) Lastly, if guys want to work collaboratively on such documentation, then a wiki is a really good place to start. cheers andy