i have completed all the steps to migration upto public folders
i am still getting a certificate warning when opening outlook saying the name does not match
its referring to the new server but is using the .local name but getting the public certificate
i am using the public name with split dns
i have double checked all the steps
Yes, that can happen if the old Exchange server is still around. If it is and your migration is completed follow the steps to uninstall old Exchange Server.