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Issue Lets encrypt for mails: separate certificates for multiple domains to avoid invalid certificates

danieldaniel

New Pleskian
Hi,

I use Onyx 17.8.11 and have several Domains Routing to plesk.

Problem: When a customer adds their email account to Outlook, iphone,.. using "mail.customer-domain.com" they receive an error: "Invalid Certificate: This certificate belongs to a different site"

Reason is that the certificate is from my "main Domain" and not "customer Domain". The message is clear to me.

However, how do I achieve to avoid such a message? My idea was to create separate certificates, but even then I stop because I have no idea how to handle it as I don't see Options for this? I also read on a post from 2016 that it's not possible, but maybe it has changed.

So how can we avoid/fix it?

Regards
 
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