On Thu, Sep 25, 2014 at 03:15:19PM +0100, Mike Cardwell wrote:
> Hi,
> 
> Is it possible to use different TLS certificates for different ports?
> I'd like to use one for SMTP on port 25, and a different one for
> submission on ports 587 and 465...

Yes.

    main.cf:
        submission_tls_cert_file = ...
        submission_tls_key_file = ...

    master.cf
        465        inet  n       -       n       -       -       smtpd
          -o smtpd_tls_wrapper_mode=yes
          -o smtpd_tls_cert_file=$submission_tls_cert_file
          -o smtpd_tls_key_file=$submission_tls_key_file
          ...
        587        inet  n       -       n       -       -       smtpd
          -o smtpd_tls_security_level=encrypt
          -o smtpd_tls_cert_file=$submission_tls_cert_file
          -o smtpd_tls_key_file=$submission_tls_key_file
          ...

-- 
        Viktor.

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