My client, here in France, has a web site hosted by 1and1.fr
He recently opened an account with Exchange Online (Office365) to host his mail accounts
DNS records need to be defined (MX, CNAME, TXT, SVR) on the domain host (1and1.fr) in order to allow Exchange Online to manage the messaging
Unfortunately 1and1 doesn't allow us to have both an MX and a CNAME record : it's one or the other
Obviously, because of the hosted website, I can't redirect the whole domain, so MX it is
What I didn't realize is that Outlook's autodiscovery doesn't work without the CNAME record
Can anyone tell me how to manually configure Outlook for Exchange Online ?
I can't seem to find the server's address - which would obviously be a good starting point