Updating MX record - RPC over HTTP Cetificate Update Required?

We have Outlook Anywhere (rpc over http)  running on an Exchange 2007 Server.  We are changing ISPs so our IP is going to change but not our domain name.  Do I need to get a new certificate to reflect the IP change?  Or does the Cert only contain the FQDN?
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DNS should handle the IP stuff. Only FQDN or host names are in the cert. Someone searches for a fqdn, DNS points them there... once they are there, security begins to work.

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Certificate is not related to the IP address.  It contains only information relating to host records, i.e. mail.mydomain.com, autodiscover.mydomain.com, server.domain.local, etc. etc.

Just make certain that all 'a' records are setup in the new ISP's DNS.
RLLSTechAuthor Commented:
Thanks to both of you!
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