I have a server with 8 virtual hosts. The 8 domains have their letsencrypt certificate and work very well :), also, i managed to use the same certificates in dovecot server for imap/pop ssl connections. No problems.
But, i want to use the certificate also for smtp ssl connection because mail clients are asking users to accept self-signed certificate always on the first message they send on every session.
I created a certificate for myserver.com url and assigned to postfix smtp server but mail clients keep asking to accept cert because cert is authorizing other name. I think has to be the same certificates of virtual hosts and not my server url, but postfix does not allow SNI, so, how can i do this?