smtpsendauth

AUTH LOGIN
    334 VXNlcm5hbWU6
asadBlqewrQEFGNvbQ==
    334 UGFzc3dvcmQ6
TXEEWTQkdzByZA==
    235 Authentication succeeded
mail from: john@example.com
250 OK
rcpt to: me@example.co.za

....