Smtp mail sender for nullmailer
/usr/lib/nullmailer/smtp [flags] remote-address < mail-file
Send an email message via SMTP
-p, --port=INT
Set the port number on the remote host to connect to
--user=VALUE
Set the user name for authentication
--pass=VALUE
Set the password for authentication
-d, --daemon
use syslog exclusively
-s, --syslog
use syslog additionally
--auth-login
Use AUTH LOGIN instead of auto-detecting in SMTP
--ssl
Connect using SSL (on an alternate port by default)
--starttls
Use STARTTLS command
--x509certfile=VALUE
Client certificate file
--x509cafile=VALUE
Certificate authority trust file (Defaults to /etc/ssl/certs/ca-certificates.crt)
--x509crlfile=VALUE
Certificate revocation list file
--x509fmtder
X.509 files are in DER format (Defaults to PEM format)
--insecure
Don't abort if server certificate fails validation
-h, --help
Display this help and exit