I have recently began receiving emails regarding an expiring certificate for my domain. I have been in touch with google and godaddy and I am still none the wiser about what I need to do. I have been using the domain for a long time now and this is the first time I have received such emails and I'm not sure what I need to do.
Can you help me please?
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Thank you Juergen,
I'm afraid this is all new to me and I have no idea about these certificates. I have been using this domain for years through google/godaddy and this has never come up. I'm still not sure what I need to do and godaddy can't give me any answers. From what I think I understand, this might be something that they should deal with on their end?
It seems that your site has switched certificate providers from Let's Encrypt to ZeroSSL (a different certificate authority). If you're not responsible for this, it was probably done for you by your web host.
Let's Encrypt always sends warnings by e-mail when certificates that it issued in the past are going to expire without having been replaced by a new Let's Encrypt certificate. It never attempts to check (and doesn't necessarily have a reliable way that it could check) if this is intentional because the old certificate has been replaced by a different one.
In your case, it appears that it is intentional that your hosting provider switched certificate issuers, which means that it's also intentional that the old certificate will expire without being replaced (by a new one from Let's Encrypt). But again, Let's Encrypt has no way to know whether this is intentional and just wanted to warn you in case it wasn't.