Windows server 2008 - ISP and External IP changed

Window server 2008 with Exchange and AD

If the external IP that provided by ISP is changed. Anything server setting i need to update? Except the dns and default gateway in network.

Thanks.

agicfutureAsked:
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saku99Commented:
No you should not have to update anything on the server. I'm assuming that the server is behind a firewall with NAT so you're not exposing the extrenal IP to the server directly.

As you say obviously you need to update DNS to make sure things get to your new IP address. Default gateway should be the same if your internal network topolgy hasn't changed (again provided you are behined a NATed firewall)

You may also need to update your firewall, some vendors specify the source IP address in the port forwarding rules.
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agicfutureAuthor Commented:
Yes. everything behind firewall.  The firewall is provided by ISP, they will help to config it.

Thanks.
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B HCommented:
i think when you said "Except the dns and default gateway in network" you need a little more info because that could mean a few things...

the DNS setting in "network" needs to be just your own internal dns server and nothing else.

when your outside ip changes, you MUST go to your dns host (who you pay money to) and tell them to update your "A" record for your "MX" record.

right now, you have:
MX = mail.domain.com
A:  mail.domain.com = a.b.c.d  (your current outside ip address)

the A record has to change to be your new ip address

to find out who is your dns provider, do this:
start > run > cmd
nslookup
server 208.51.8.2  (or any outside one)
set q=ns
domain.com   (your outside domain name)

whatever comes back, that's the company you need to call... you'll know it when you see it.
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agicfutureAuthor Commented:
hi bryon44035v3,  so that no need to update anything on  Exchange Server setting.  right?

Thanks.
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B HCommented:
right - nothing changes inside the server... only the outside-world dns stuff...

your server itself doesn't know or care what happens with its outside ip address
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agicfutureAuthor Commented:
Thanks.
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Windows Server 2008

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