diff --git a/DOC/postfix/postfix_sasl_cyrus_on_relayhost.txt b/DOC/postfix/postfix_sasl_cyrus_on_relayhost.txt
index 037d62f..1263cda 100644
--- a/DOC/postfix/postfix_sasl_cyrus_on_relayhost.txt
+++ b/DOC/postfix/postfix_sasl_cyrus_on_relayhost.txt
@@ -125,6 +125,16 @@ vim /etc/postfix/sasl/smtpd.conf
 vim /etc/postfix/main.cf
 
 
+## - !! Note !!
+## -
+## - Take care that the 'smtp' entry in master.cf DOES NOT contain an entry;
+## - 
+## -    -o smtpd_sasl_auth_enable=no
+## -
+## - Remove this line or set smtpd_sasl_auth_enable to 'yes'
+
+
+
 ## - --------------------------------------------------------------- - ##
 ## - Configuring SASL authentication in the Postfix SMTP/LMTP client - ##
 ## - --------------------------------------------------------------- - ##