Restart sendmail on any system that has a revised configuration file.
# svcadm refresh network/smtp:sendmail
Send test messages from each system.
# /usr/lib/sendmail -v names </dev/null
Specify a recipient's email address.
This command sends a null message to the specified recipient and displays the message activity on your monitor.
Send mail to yourself or other people on the local system by addressing the message to a regular user name.
From the main system to a client system
From a client system to the main system
From a client system to another client system
Ask someone to send mail to you over the UUCP connection.
The sendmail program cannot detect whether the message is delivered because the program passes the message to UUCP for delivery.