Expiration notice for "dead" domain/server

I am occasionally getting expiration notices for domains, that I still own, but for which the server (where I had the certificates) are long gone. I have absolutely no way to restore the server. If I ever am to create new servers for those domains, I’ll also create new certificates.

So my question is how to remove those “dead” domains.

The domains are:

cloud2.hapsengewesen.net
www2.hapsengewesen.net

My web server was (include version): Apache

The operating system my web server runs on was: Ubuntu 16

My hosting provider, if applicable, is: ssdvps.dk

I can login to a root shell on my machine: No, machine is gone forever.

Hi @bengsig

checked the first domain ( https://check-your-website.server-daten.de/?q=cloud2.hapsengewesen.net ):

CRT-Id Issuer not before not after Domain names LE-Duplicate next LE
1331230942 CN=Let’s Encrypt Authority X3, O=Let’s Encrypt, C=US 2019-03-22 05:15:26 2019-06-20 04:15:26 cloud2.hapsengewesen.net, www2.hapsengewesen.net
2 entries
1127917377 CN=Let’s Encrypt Authority X3, O=Let’s Encrypt, C=US 2019-01-20 11:57:47 2019-04-20 10:57:47 cloud2.hapsengewesen.net, www2.hapsengewesen.net
2 entries

The certificates expires 2019-06-20.

First mail - 20 days earlier.
Second and last mail - 10 days earlier.

So ignore the mail.

You can revoke the deleted server certificates before removing them.

Sorry, but I cannot revoke it, as the entire server where I had the files is gone with no backup. That’s the core of my problem.

Then you don’t have a problem–simply ignore the emails. There are only two of them.