[SASAG] DNS Propagation

Skylar Thompson skylar at cs.earlham.edu
Mon Aug 17 09:06:05 PDT 2009

eric at kahklen.com wrote:
> I need to change my MX record to our new public IP.  My preference is to
> change it after hours on a Friday to allow DNS to propagate.  What sort of
> time frame have people seen with DNS propagation?  We only have one MX
> record.
It depends on the TTL for that record. There's some DNS servers that
don't respect TTLs, so if you can you should leave your MX listening on
both IPs for a while.

-- Skylar Thompson (skylar at cs.earlham.edu)
-- http://www.cs.earlham.edu/~skylar/

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