Hello,
I have a problem during creating Let's encrypt certificates for autodiscover and mail. The server certificate grommunio.mydomain.com is working fine, but when using Outlook or IOS the system uses autodiscover.mydoamin.com and this domain is using the same certificate as grommunio.mydomain.com.
The logs of let's encrypt shows the following error when using the following command for creating the certificates:
certbot certonly --preferred-challenges http --cert-name="grommunio.mydomain.com" -d "mydomain.com,autodiscover.mydomain.com,grommunio.mydomain.com" -m "office@mydomain.com"
Error:
Domain: autodiscover.mydomain.com
Type: unauthorized
Detail: x.x.x.x: Invalid response from http://autodiscover.mydomain.com/.well-known/acme-challenge/I0pUx0NYO9kH4prsXHsXwXIE98HMJiOlL2vC6Epodd4: 403
Same error for mydomaon.com
I already tried it multiple times, as well as executing the Startup assistant multiple time.
Thank you for your help,
Florian