We have current exchange 2003 and we have migrated it with exchange server 2010.
We have paid ssl certificate for the exchange server 2003 and now we want to by a new certificate for the exchange server 2010
old server : exchange.abc.com
url : https://exchange.abc.com/owa
new server: mail.abc.com
we can access mails with https://mail.abc.com/owa internal url and its working internally fine. But we can not able to access this from the outside network.
when we try to access https://mail.abc.com/owa externally we got the error of certificate mismatch and we got error of 404.
when we click on certificate then the certificate is of exchange.abc.com