I use telnet to auth my email. but it is fail. telnet mail_server_domain 25 EHLO mail_server_domain AUTH NTLM base64_my_email base64_password 535 5.7.3 Authentication
telnet mail_server_domain 25 EHLO mail_server_domain AUTH NTLM base64_my_email base64_password 535 5.7.3 Authentication