On Saturday 09 November 2002 11:02 am, Daniel O. Escasa wrote:
> ** Sabi ni Joon noong Fri, 08 Nov 2002 15:51:38 +0800

> Beg to differ -- one week would be long, and that would be on the less
> active nameservers. In practice, I've found that DNS updates take about 24
> hours to propagate.

I've done this several times.  Every time there were problems with email not
arriving for three to five days. But those were full DNS transitions (change 
to different IP blocks).  At the time, we weren't playing with the TTLs.  

Most recently (and for a limited problem only, I was only transitioning 
the primary MX), I was able to tweak TTLs and was able to transition
in one to two hours with no problems.  I'm sure some DNS servers out 
there were still caching outdated information, but this was a small site 
with a relatively small set of external people sending email into it.  they
just didn't receive enough traffic to trigger any bogosities.

My company will be doing a full DNS transition in the next few weeks.
We'll play with the TTLs then and monitor how it goes.  If I remember,
I'll report to the list.

tiger


-- 
Gerald Timothy Quimpo  tiger*quimpo*org gquimpo*sni-inc.com tiger*sni*ph

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