Scot
We did that... when we changed class C's, but you will need to edit your
Registry file once the change has been made to delete the old addresses. The
path is:
HKEY_LOCAL_MACHINE/SOFTWARE/IPSWITCH/
Look at all the folders/keys underneath "ipswitch" and modify accordingly...
Don't for get to change your "hosts" files too if you are running a
secondary mail server.
The path is on your root drive:
winnt/system32/drivers/ets/hosts
And yes you can point DNS at both servers as long as you have the addresses
routable in your router and the machines are on the same hub. We also put
all servers on a hub instead of our switch. (less messing around setting up
the switch)
We setup all the servers with both sets of IP addresses until all the
changes were made...
As soon as DNS and the Internic (good luck with them... took two weeks for
Internic to change 48 domain names to point at the right name server)
updates you can shut of the other IP addresses. And cut off the other
Primary DNS server. Do a nslookup at various name servers across the
internet to make sure your DNS is out there correctly then cut off the other
IP Addresses and remove the routing from your router... Total time for us to
cut over.... three weeks....
Bob
Robert R. Brown
VP Operations
PK Communications, Inc.
5 Marway Circle
Suite 17
Rochester, NY 14624
http://www.pkcommunications.com
1-716-426-3459 Direct
1-716-426-3458 Network Operation Center
Main Office:
3173 Chili Avenue
Suite 200
Rochester, NY 14624
1-716-889-7130 Main Office
1-716-889-7413 Fax
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Scot Desort
Sent: Monday, February 28, 2000 6:22 PM
To: [EMAIL PROTECTED]
Subject: [IMail Forum] Network renumbering considerations with IMAIL
We are considering a network renumbering plan. We are wondering about the
impact on IMAIL. Currently, we have IMAIL configured with individual IP
addresses for each mail host.
Our initial idea was to have IIS4 listen on both the old and new IP address
for a web host, change DNS, and once the DNS caches have expired, remove the
old IP address from IIS. But what about IMAIL? Can an IMAIL host IP address
be configured to point to the same directory, and be set with the same host
name, as another IMAIL host on the same machine? Our concern here is that
during the DNS expiration window, if IMAIL is only configured to listen for
incoming mail on the new IP address, any mail coming in being directed to
the old IP address will be returned to the sender.
Or, is DNS expiration not an issue for mail. Does an SMTP sender
automatically do a live MX lookup each time it sends mail out, regardless of
whether that record already exists in it's DNS cache?
I hope I am explaining myself clearly enough here. Any tips from anyone else
who has gone through a renumbering would be appreciated.
--
Scot
NJ Internet Access
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