This needs to be fixed, we need to always be able to use mail.ourclientdomains.com and when our clients go there, they get the screen that shows to login but when they submit it says invalid login. The work around is to tell customers to add "s" https then try again and it works. However, this is a pain and we need correct dns CNAME entries that are auto propogated that works with out the workaround. Right now the CNAME records that are auto configured are INVALID.

I think Rackspace should redirect mail.emailsrvr.com to a whitelabel secure login and this would be fixed. Maybe all they need is a multidomain ssl??