diff --git a/data/templates/postfix/main.cf b/data/templates/postfix/main.cf
index b96bb4860..7d7589c66 100644
--- a/data/templates/postfix/main.cf
+++ b/data/templates/postfix/main.cf
@@ -45,7 +45,8 @@ smtp_tls_exclude_ciphers = $smtpd_tls_exclude_ciphers
 smtp_tls_mandatory_ciphers= $smtpd_tls_mandatory_ciphers
 smtp_tls_loglevel=1
 
-# Fix "Untrusted TLS connection established to" message in log
+# Configure Root CA certificates
+# (for example, avoids getting "Untrusted TLS connection established to" messages in logs)
 smtpd_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
 smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt