Hi All,
I had reason to change email domains for a company that used to have it's internal (AD Domain) match it's external (Email Domain). During this process I changed the SSL cert from a wildcard (*.internaldomain.com) to a wildcard for the new external
domain. I also had a situation where I had to implement a split DNS due to autodiscover etc.. requirements internally. The split DNS has entries for mail, autodiscover and the two (in this case) exchange servers which are clustered for DAG.
However I now have a problem where everything works externally fine and I get a match with the new certificate, however internally I get two issues (not sure if they are related):
1) Outlook gives me the following error: "There is a problem with the proxy server's security certificate. The name on the security certificate is invalid or does not match the name of the target site ServerA.internaldomain.com
Outlook is unable to connect to the proxy server. (Error Code 10)
2) An SSL missmatch error for the new external wildcard saying that the servername exchangeserver.internaldomain.com does not match.
I have changed all the sevices (EWS/ECP/OWA/OAB etc..) for the new domain name and restarted IIS. I have also tried to configure the services for internal domain to use the new domain name as as well (I can do this as the split DNS uses internal IP's) with no success. I have also set the msstd settings for EXH, EXP and WEB to the new wilcard cert.
What have I missed if anything? Possibly it was configured incorrectly before and didn't throw an error because the external domain matched the internal domain? Much thanks if anybody can help here as I am pulling my hair out.
Thanks!