To get more information about it  you can set

smtpd_tls_loglevel = [log level]

You can set it in the main.cf file

http://www.postfix.org/postconf.5.html (search for smtpd_tls_loglevel and you will see the possible settings for it)

hth,
esteban.-

On 08/20/2016 08:42 PM, Security Admin (NetSec) wrote:
Recently updated to Postfix 3.1

Noticed the following error in my "mail.log" file:

"postfix/smtp [ ]: Cannot load Certification Authority data, 
CAfile'"/etc/postfix/localrootCA.pem": disabling TLS support


Where "localrootCA.pem" is the public key of the root CA for my Windows AD 
domain.  Postfix is my mail gateway, and I use Exchange servers internally.


If anyone knows how to debug this so that TLS support is not disabled, much 
appreciated.


Edward Ray


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