Multiple domain

Hi, I’m trying to configure a certificate to MS Teams SBC.

In Teams I have 2 domains ans

At now, I’d created a cert for and for user works, but for user I cannot received calls with SBC.

Microsoft told me that the problem is that in the cert I have to add both domains, and

So, I’d tried to add both domains with:

./letsencrypt-auto certonly --standalone -d -d

But I get a error with

Type: unauthorized
Detail: Invalid response from
[ip address]: “\n\n404 Not

Not Found


To fix these errors, please make sure that your domain name was
entered correctly and the DNS A/AAAA record(s) for that domain
contain(s) the right IP address. is a domain of my company and use port 80.

Can I only add second domain in cert? Anyone has this problem with MS Teams?


Is your real domain or are you using it as an example?

The domain is for sale and has no Let’s Encrypt certificates.

What’s your real domain?

Are and hosted on the same server?

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Hi, thaks for answer… is an example, my real domain is other name…

No, is hosted in one server and is in other server. is the domain of my organizations and in the FQND for the SBC for Teams.


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