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Exchange and ISP

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by jcbrito_77

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Do I need to contact my ISP when doing a hardware upgrad my Exchange server 5.5. The domain name will stay the same. The IP address will change and the host name will change.

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by joseph moore

Yes, you should let the ISP know.
There is an MX record that points to the current IP address of your current Exchange server. This MX record was built by your ISP (you are probably using their Nameservers in your domain registration).
If you newExchange server has a different IP from the old one, then the MX records will not resolve at your new Exchange server. If that happens, then you won't receive new inbound e-mail. It is the MX records that are used to receive mail.
So, let the ISP know the new IP address of your new mail server. This change can be done when your new server is online. The ISP might have a delay between putting the IP change in and when it will be put into effect. You should co-ordinate this with them before you cut over to the new server.

hope this helps

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