Telnet into port 25
helo
250 vespoli.local Hello [192.168.2.4]
mail from:test@testserver.com
250 2.1.0 test@testserver.com....Sender OK
rcpt to:chris4senator@gmail.com
250 2.1.5 chris4senator@gmail.com
data
354 Start mail input; end with <CRLF>.<CRLF>
subject: test email
Test message 3/8/15@1149
.
250 2.6.0 <MYHOMESS1IZS2TRqf690000000c@vespoli.local> Queued mail for delivery