IP address changing; any sendmail issues?
Kenneth Porter
shiva at well.com
Tue Jun 20 17:25:05 UTC 2000
schulz at adi.com (Thomas Schulz) wrote in <Fw3KH4.B1v.0.bluegill at adi.com>:
>As the time of the change approaches, start lowering your TTLs (time to
>live). That is: at 5 days before the change lower yor TTLs to less than
>4 days, at 4 days before the change lower your TTLs to less than 3 days,
>etc. Just before the last day lower the TTLs to an hour or so. A few
>hours before the change, lower the TTLs to a few minutes.
>After the change, put your TTLs back to their normal values.
Makes sense. I just checked with nslookup and my A record is already at
about 7 hours and my PTR record is at 4 minutes (!). I'll just have the
server for the A record drop the TTL to 10 minutes or so the day before the
change.
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