smtptest.py: command-line smtp test mail senderI use this to programmatically test the security of my email server setups. With this Python app it's easy to script various combinations to SMTP sending options to make sure your email server behaves as you expect, both inside the firewall and out.Usage: python smtptest.py [options] fromaddress toaddress serveraddress Options:  -h, --help            show this help message and exit  -t, --usetls          Connect using TLS, default is false  -s, --usessl          Connect using SSL, default is false  -n nnn, --port=nnn    SMTP server port  -u username, --username=username                        SMTP server auth username  -p password, --password=password                        SMTP server auth password  -v, --verbose         Verbose message printing  -d n, --debuglevel=n  Set to 1 to print smtplib.send messagesExamples:python smtptest.py bob@example.com mary@example.com mail.example.compython smtptest.py --debuglevel 1 --usetls -u bob -p xyzzy "Bob <bob@example.com>" mary@example.com mail.example.comAt verbose == False and debuglevel == 0, smtptest will either succeed silently or print an error. Setting verbose or a debuglevel to 1 will generate intermediate output.See alsohttp://docs.python.org/library/smtplib.html