Thank you for advices but how setup different SMTP in MX record if MX record determine pop3/imap and smtp servers? Do you mean set few MX records with few mailservers? Currently I only know that I could configure few MX records with few mailservers with different priority. I would like to underline I could not understand you properly.
2018-05-25 15:51 GMT+02:00 Wietse Venema <wie...@porcupine.org>: > Poliman - Serwis: > > I have server created based on Perfect Server tutorial for Ubuntu 16.04. > > Is it possible to assign to postfix/dovecot as many lets encrypt ssl > certs > > as possible? I have 20 domains on the server but postfix uses > ispserver.crt > > and ispserver.key certs generated by letsencrypt: > > > > lrwxrwxrwx 1 root root 48 Mar 13 07:42 smtpd.cert -> > > /usr/local/ispconfig/interface/ssl/ispserver.crt > > lrwxrwxrwx 1 root root 48 Mar 13 07:42 smtpd.key -> > > /usr/local/ispconfig/interface/ssl/ispserver.key > > > > which are from: > > > > lrwxrwxrwx 1 root root 50 Nov 3 2017 ispserver.crt -> > > /etc/letsencrypt/live/s1.example.net/fullchain.pem > > lrwxrwxrwx 1 root root 48 Nov 3 2017 ispserver.key -> > > /etc/letsencrypt/live/s1.example.net/privkey.pem > > > > > > For each domain except server fqdn I have certificate mismatch in mail > > client. Sending emails works but I would like to fix certs mismatch. > > Postfix does not yet support SNI, so you would need to update master.,cf > with one smtpd definition per IP address with its own smtpd_tls_*cert_file > and smtpd_tls_*key_file. > > But why? SMTP is not HTTP. With SMTP, the MX records for different > domains can contain the same SMTP server hostname. > > Wietse > -- *Pozdrawiam / Best Regards* *Piotr Bracha*
