Office365 Autodiscover CNAME Record Doesn't Work

Hello,

I already have seen your post about this very same error:

The problem is neither the solution works for me, nor any other way around on CDN services is working:

At this point, I don’t know what to do. Could you help me in some way?

Regards,
O. J.

Here the configuration:

Your records behave as if you have CNAME flattening turned on for subdomains. Is this a Paid Plan (Pro/Business/Enterprise)?

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Thank you @sdayman

I changed the CNAME Flattening configuration to “Flatten CNAME as root” and it worked. Thank you for your help.

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