I have on premises exch2016 and need change primary email address from xx@abc.com to xx@xyz.com. I have used policy to add the second email. While testing xyz.com I found that it shows a warning popup message. "Autodiscover.xyz.com does not match the name of the certificate ...".
All Virtual Directories are using 'mail.abc.com' as base,like owa is "https://mail.abc.com/owa". What is best way to do the migration. Do I need wipe out all current virtual directory and recreate using xyz.com as url? I don't want to do it this way, because it could affect current mail flow. But Phone and Outlook shows this pop up message if restarted. There is a post to suppress the outlook pop up. But is there a better way to deal with it?
Alan