Exception while executing function: Dns01Precondition

[sanpai2024]

Hi
When i am running the latest version from the remote zip file , get this error

Exception while executing function: Dns01Precondition Query 27751 => XXXX.com IN NS on x.x.x.x:53 timed out or is a transient error. The operation was canceled.

Our DNS is Azure DNS and the function app has DNS Zone contributor role.

Wondering if you know anything about this.

Regards

[shibayan]

It is possible that the DNS in question does not have an NS record assigned to it. Please check that the correct NS record is assigned to the domain.

[sanpai2024]

Hi there - actually some more details on the error . x.x.x.x:53 is actually Google DNS 8.8.4.4:53. Wondering why it's trying to reach Google DNS since we have specified Azure DNS using this App setting Acmebot:AzureDns:SubscriptionId

[shibayan]

In order to detect missing NS settings for domains, Acmebot uses Google Public Dns to check that NS records are set correctly for some DNS providers, such as Azure DNS.

If you get an error with Dns01Precondition, there is a high possibility that there is a mistake in the setting of the NS record for the domain, so please check again. Please check with your domain provider for details on setting up NS records.

[sanpai2024]

ok. thanks for that insight.. I will check it with our network admins on this.

[sanpai2024]

Thanks . That tip helped. Look like we had blocked outbound to Google DNS from the Function App's outbound IP adressses. Once we fixed that everthing worked and the certs got created successfully !!