My domain is: delta-tech.com I ran this command: certbot renew -v --dry-run --debug-challenges It produced this output: Certbot failed to authenticate some domains (authenticator: webroot). The Certificate Authority reported these problems: Domain: imap.delta-tech.com Type: connection Det…

[image] rick: During secondary validation and [image] rick: Fetching http:// suggests the LE ACME validation server cannot reach your server from the remote vantage points used by the multiple-vantage point verification using just HTTP. It doesn't even reach the stage of HTTP to HTTPS…

HTTP challenge failing Nginx HTTP to HTTPS redirect

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petercooperjr October 3, 2024, 3:20pm 3

Definitely looks like some sort of geographic block, where the US reports a 503, and other places can't connect at all:

You may find this FAQ useful:

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HTTP challenge failing Nginx HTTP to HTTPS redirect

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