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Question Plesk give Default Cert of Server to Mail-Programm

ealexey

New Pleskian
Hello,
as I noticed in other topic I had some problem with SSL Certs in Thunderbird (TB) because the Plesk-Cert was exipired. Those problem I had resolved, but I have now other (question and maybe issue):
why Plesk give the default cert of server to my mail-programm (Thunderbird) althrough for each mail-domain are created valid certs with Let's Encrypt.

So, issue is: if TB connected to server to call mails (I use pop3 via 995 with TLS/SSL-Encryption) the plesk give not assigned to certain domain cert but default of server.
Do I create let say for each domain one subdomain called "mail" (in case I use mail.domain.tld as mx-record) and create to this subdomain a cert with Let's Encrypt? or is it OK that Plesk use only default cert for securing mails, so for all mail domains?

Thanks
 
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