We have been asked by a third party to update the CNAME record for a client site, in order to facilitiate email redirects.
My understanding is that this is what MX records are for.
My system refuses to update the CNAME as they've requested as it states that SOA record already exists. Also existing CNAME records are in place (for things like www., etc.) going to the main domain.
The third party wants the CNAME updated to
autodiscover.outlook.com. Currently it is simply going to the domain website we host.
I believe they are incorrect in requiring this. Am I right?