# SMTP protocol session. Send email. # user test, test1, test2 must exist S: 220.* C: HELO foobar S: 250.* C: MAIL FROM: S: 250.* C: RCPT TO: S: 250.* C: RCPT TO: S: 250.* C: RCPT TO: S: 250.* C: DATA S: 354.* C: From: C: To: C: Cc: C: Subject: test C: C: Test message body C: . S: 250.* C: QUIT S: 221.*