I received this log from my poste.io installation (renewed hundred of times before the certificates)
[2026-06-03 06:25:02] LEScript.INFO: Requesting new nonce for client communication
[2026-06-03 06:25:03] LEScript.INFO: Account already registered. Continuing.
[2026-06-03 06:25:03] LEScript.INFO: Sending registration to letsencrypt server
[2026-06-03 06:25:03] LEScript.INFO: Sending signed request to https://acme-v02.api.letsencrypt.org/acme/new-acct
[2026-06-03 06:25:03] LEScript.INFO: Account: https://acme-v02.api.letsencrypt.org/acme/acct/106114124
[2026-06-03 06:25:03] LEScript.INFO: Starting certificate generation process for domains
[2026-06-03 06:25:03] LEScript.INFO: Requesting challenge for mail.fuam.es, mail2.fuam.es
[2026-06-03 06:25:03] LEScript.INFO: Sending signed request to https://acme-v02.api.letsencrypt.org/acme/new-order
[2026-06-03 06:25:04] LEScript.INFO: Sending signed request to https://acme-v02.api.letsencrypt.org/acme/authz/106114124/707369639826
[2026-06-03 06:25:04] LEScript.INFO: Got challenge token for mail.fuam.es
[2026-06-03 06:25:04] LEScript.INFO: Token for mail.fuam.es saved at /opt/www//.well-known/acme-challenge/gW974r5Kx3ZNadeGzyVq9fLrQpUQn46WJ2A4eeuwMbA and should be available at http://mail.fuam.es/.well-known/acme-challenge/gW974r5Kx3ZNadeGzyVq9fLrQpUQn46WJ2A4eeuwMbA
[2026-06-03 06:25:04] LEScript.INFO: Sending request to challenge
[2026-06-03 06:25:04] LEScript.INFO: Sending signed request to https://acme-v02.api.letsencrypt.org/acme/chall/106114124/707369639826/THcSfw
[2026-06-03 06:25:05] LEScript.INFO: Verification ended with status: valid
[2026-06-03 06:25:05] LEScript.INFO: Sending signed request to https://acme-v02.api.letsencrypt.org/acme/authz/106114124/699362018535
[2026-06-03 06:25:05] LEScript.INFO: Got challenge token for mail2.fuam.es
[2026-06-03 06:25:05] LEScript.INFO: Token for mail2.fuam.es saved at /opt/www//.well-known/acme-challenge/wWdis69cR0xbKzuA-ZzDJRyDD1CpL4akYDxRl0tUMtM and should be available at http://mail2.fuam.es/.well-known/acme-challenge/wWdis69cR0xbKzuA-ZzDJRyDD1CpL4akYDxRl0tUMtM
[2026-06-03 06:25:05] LEScript.INFO: Sending request to challenge
[2026-06-03 06:25:05] LEScript.INFO: Sending signed request to https://acme-v02.api.letsencrypt.org/acme/chall/106114124/699362018535/udnKwg
[2026-06-03 06:25:06] LEScript.INFO: Verification ended with status: valid
[2026-06-03 06:25:06] LEScript.INFO: Sending signed request to https://acme-v02.api.letsencrypt.org/acme/finalize/106114124/517618890726
[2026-06-03 06:25:06] LEScript.ERROR: 403 { "type": "urn:ietf:params:acme:error:unauthorized", "detail": "Error finalizing order :: authorizations for these identifiers not found: mail.fuam.es, mail2.fuam.es", "status": 403 }
[2026-06-03 06:25:06] LEScript.ERROR: #0 /opt/admin/vendor/analogic/lescript/Lescript.php(544): Analogic\ACME\Client->curl('POST', 'https://acme-v0...', '{"protected":"e...')
[2026-06-03 06:25:06] LEScript.ERROR: #1 /opt/admin/vendor/analogic/lescript/Lescript.php(422): Analogic\ACME\Client->post('https://acme-v0...', '{"protected":"e...')
[2026-06-03 06:25:06] LEScript.ERROR: #2 /opt/admin/vendor/analogic/lescript/Lescript.php(209): Analogic\ACME\Lescript->signedRequest('https://acme-v0...', Array)
[2026-06-03 06:25:06] LEScript.ERROR: #3 /opt/admin/src/AppBundle/Handler/LeHandler.php(62): Analogic\ACME\Lescript->signDomains(Array)