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
...
Revision 2 as of 2018-12-30 21:02:22
Clear message
Connect and move to tls protected channel
$ openssl s_client -starttls smtp -crlf -connect vigor.nz:25
...