I have a problem with my 2010 exchange server and connecting remotely by web or phone. We did change our internet service provider and we did get a new static IP. I reprogrammed our Cisco router with the new IP and the internet service works fine. The mail works fine because we use POP accounts at each workstation so that the server is not handling internet mail. We were able to get into the exchange server using outlook web access before by using the internet address remote.domainname.com. I am not sure I understand where the new information about the new IP would be added to make that address work again. I know the domainname.com is hosted by network solutions. Because we use POP accounts I believe there would be no MX or A records to change as far as IP addressed pointing to our exchange server. Does anybody know where the necessary change needs to be made?