SMTP Simple mail transfer protocol
Debug smtp sasl starttls authentication
Connect and move to tls protected channel
$ openssl s_client -starttls smtp -crlf -connect vigor.nz:25 ehlo testconnection auth plain (base64encodedstring)
...
Connect and move to tls protected channel
$ openssl s_client -starttls smtp -crlf -connect vigor.nz:25 ehlo testconnection auth plain (base64encodedstring)
...