دوستان منظور از Helo چیست و دقیقا به چه موردی اشاره میکنه ؟
-1.539 FSL_HELO_BARE_IP_2 IP used in the HELO request
The hostname should be a domain name, not an IP address
-0.865 RCVD_NUMERIC_HELO Received: contains an IP address used for HELO