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Re: Changing servers

On Wednesday 21 March 2001, at 8 h 34, the keyboard of Steve 
<sjw@exegesis.org.uk> wrote:

> RedHat) to a debian server. I'm trying to figure out a 
> way that will cause least mail delays to our customers
> whilst the dns records propagate (The IP's are going to
> change for the mail server).

a) lower the TTLs to almost zero
b) wait $OLDTTL + $REFRESH seconds
c) change the infos
d) after checking, put the TTLs back to the normal value

That way, the change is instantaneous.

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