> The problem is the changes have not propagated properly. I've done
> MX lookups on many name servers, and only about half of them have
> picked up the changes (i.e.. they don't see the A record or the MX
> record, but they still see the original "www" A record).
If some of them *do* see the changes, then I think everything is correct on your end
at this point.
This is caused by the *OLD* timeout value you had, before making the change. The DNS
servers out there that have cached your old DNS entries have the old TTL (time to
live) value, and that timeout value hasn't timed out yet. For example, if it was set
to a week, and it got the old value 3 days ago, it will hold on to the old values for
another 4 days.
Changing the serial number won't do anything for the DNS servers. That only affects
*your* DNS servers (they will check every so often (as determined by the SOA record)
to see if the serial number has changed, and if so, re-load everything).
When you set a TTL value too high, and then lower it, you just have to sit and wait
for the DNS servers to get the new record.
-Scott
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