smtp: sending an email from the telnet prompt

This mail relay must accept SMTP connection from your host and must accept relaying. To check if the mail relay is working try



telnet mailrelay.domain 25
.... answer from mail relay .....

helo 
mail from: root@
rcpt to: @

data

mail test from unix
.



mail server should answer something like mail sent. If this work you can try with a normal mail client like



mailx -s "subject" @
mail test from unix
.



To check if this has work look at /var/adm/syslog/mail.log

you should see a couple of lines stating the mail has been accepted locally and sent to the relay and accepted.