Question Certificate renewal warning / notification although no certificate assigned/created

[marc_rn]

Server operating system version

Ubuntu 24.04.4 LTS

Plesk version and microupdate number

Version 18.0.75 Update #1, zuletzt aktualisiert: 26. Febr. 2026 00:13:16

Hello Plesk Team and Community,
we are currently facing an issue where one of our customers receives a daily notification email stating that their Let's Encrypt certificate cannot be renewed.

The domain in question is no longer pointing to our server. However, it is still configured in Plesk because it is the primary domain of the subscription and therefore cannot be removed at this stage.

In addition, we have noticed the following warning in the Apache logs:

AH01909: domain.org:443:0 server certificate does NOT include an ID which matches the server name

We are wondering whether this warning could be related to the failed certificate renewal notifications and would appreciate any insights or suggestions on how to resolve this situation.

Before posting, we already searched the forum and reviewed the available documentation, but we have not yet found a solution that matches our scenario.

Thank you in advance for your help.

 

[marc_rn]

In addition... This is the error in the e-mail notification:

Invalid response from https://acme-v02.api.letsencrypt.org/acme/authz/3.......
Details:
Type: urn:ietfarams:acme:error:connection
Status: 400
Detail: ......: Fetching http://localhost/maintenance: received disallowed redirect status code

 

[Sebahat.hadzhi]

Hi, @marc_rn . Have you already checked whether the "Keep websites secured with free SSL/TLS Certificate" setting in Plesk > Service Plans > example_plan > Additional Services is disabled?

Before posting, we already searched the forum and reviewed the available documentation, but we have not yet found a solution that matches our scenario.

It would be great if you can share what troubleshooting steps you have already taken, so we can avoid suggesting something you already tried.